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52 results on '"Aubert, J-J"'

1. Measurement of the atmospheric nu(e) and nu(mu) energy spectra with the ANTARES neutrino telescope

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Junta de Andalucía, Region Ile-de-France, GENERALITAT VALENCIANA, Conseil régional du Grand Est, AGENCIA ESTATAL DE INVESTIGACION, Institut Universitaire de France, Université Sorbonne Paris Cité, Agencia Estatal de Investigación, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Agence Nationale de la Recherche, Francia, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Centre National de la Recherche Scientifique, Francia, Bundesministerium für Bildung und Forschung, Alemania, Consiliul National pentru Finantarea Invatamantului Superior, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Ministère de l'Enseignement Supérieur, de la Recherche Scientifique et de la Formation des Cadres, Albert, A., Alves, S., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J-J., Aublin, J., Baret, B., Basa, S., Belhorma, B., Bendahman, M., Bertin, V., Biagi, S., Bissinger, M., J. A. Martínez Mora, Poirè, Chiara, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Junta de Andalucía, Region Ile-de-France, GENERALITAT VALENCIANA, Conseil régional du Grand Est, AGENCIA ESTATAL DE INVESTIGACION, Institut Universitaire de France, Université Sorbonne Paris Cité, Agencia Estatal de Investigación, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Agence Nationale de la Recherche, Francia, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Centre National de la Recherche Scientifique, Francia, Bundesministerium für Bildung und Forschung, Alemania, Consiliul National pentru Finantarea Invatamantului Superior, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Ministère de l'Enseignement Supérieur, de la Recherche Scientifique et de la Formation des Cadres, Albert, A., Alves, S., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J-J., Aublin, J., Baret, B., Basa, S., Belhorma, B., Bendahman, M., Bertin, V., Biagi, S., Bissinger, M., J. A. Martínez Mora, and Poirè, Chiara
Abstract: [EN] This letter presents a combined measurement of the energy spectra of atmospheric nu(e) and nu(mu) in the energy range between similar to 100 GeV and similar to 50 TeV with the ANTARES neutrino telescope. The analysis uses 3012 days of detector livetime in the period 2007-2017, and selects 1016 neutrinos interacting in (or close to) the instrumented volume of the detector, yielding shower-like events (mainly from nu(e) + (nu) over bar (e) charged current plus all neutrino neutral current interactions) and starting track events (mainly from nu(mu) + (nu) over bar (mu) charged current interactions). The contamination by atmospheric muons in the final sample is suppressed at the level of a few per mill by different steps in the selection analysis, including a Boosted Decision Tree classifier. The distribution of reconstructed events is unfolded in terms of electron and muon neutrino fluxes. The derived energy spectra are compared with previous measurements that, above 100 GeV, are limited to experiments in polar ice and, for nu(mu), to Super-Kamiokande. (C) 2021 The Author(s). Published by Elsevier B.V.
Published: 2021

2. Constraining the contribution of Gamma-Ray Bursts to the high-energy diffuse neutrino flux with 10 yr of ANTARES data

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Junta de Andalucía, Region Ile-de-France, GENERALITAT VALENCIANA, Conseil régional du Grand Est, AGENCIA ESTATAL DE INVESTIGACION, Institut Universitaire de France, Agencia Estatal de Investigación, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Agence Nationale de la Recherche, Francia, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Centre National de la Recherche Scientifique, Francia, Bundesministerium für Bildung und Forschung, Alemania, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Ministère de l'Enseignement Supérieur, de la Recherche Scientifique et de la Formation des Cadres, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J-J, Aublin, J., Baret, B., Basa, S., Belhorma, B., Bertin, V., Biagi, S., M. Bissinger, Boumaaza, J., Bouta, M., Martínez Mora, Juan Antonio, Poirè, Chiara, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Junta de Andalucía, Region Ile-de-France, GENERALITAT VALENCIANA, Conseil régional du Grand Est, AGENCIA ESTATAL DE INVESTIGACION, Institut Universitaire de France, Agencia Estatal de Investigación, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Agence Nationale de la Recherche, Francia, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Centre National de la Recherche Scientifique, Francia, Bundesministerium für Bildung und Forschung, Alemania, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Ministère de l'Enseignement Supérieur, de la Recherche Scientifique et de la Formation des Cadres, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J-J, Aublin, J., Baret, B., Basa, S., Belhorma, B., Bertin, V., Biagi, S., M. Bissinger, Boumaaza, J., Bouta, M., Martínez Mora, Juan Antonio, and Poirè, Chiara
Abstract: [EN] Addressing the origin of the astrophysical neutrino flux observed by IceCube is of paramount importance. Gamma-Ray Bursts (GRBs) are among the few astrophysical sources capable of achieving the required energy to contribute to such neutrino flux through p¿ interactions. In this work, ANTARES data have been used to search for upward going muon neutrinos in spatial and temporal coincidence with 784 GRBs occurred from 2007 to 2017. For each GRB, the expected neutrino flux has been calculated in the framework of the internal shock model and the impact of the lack of knowledge on the majority of source redshifts and on other intrinsic parameters of the emission mechanism has been quantified. It is found that the model parameters that set the radial distance where shock collisions occur have the largest impact on neutrino flux expectations. In particular, the bulk Lorentz factor of the source ejecta and the minimum variability time-scale are found to contribute significantly to the GRB-neutrino flux uncertainty. For the selected sources, ANTARES data have been analysed by maximizing the discovery probability of the stacking sample through an extended maximum-likelihood strategy. Since no neutrino event passed the quality cuts set by the optimization procedure, 90 per cent confidence level upper limits (with their uncertainty) on the total expected diffuse neutrino flux have been derived, according to the model. The GRB contribution to the observed diffuse astrophysical neutrino flux around 100 TeV is constrained to be less than 10 per cent.
Published: 2021

3. Measurement of the atmospheric nu(e) and nu(mu) energy spectra with the ANTARES neutrino telescope

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Junta de Andalucía, Region Ile-de-France, GENERALITAT VALENCIANA, Conseil régional du Grand Est, AGENCIA ESTATAL DE INVESTIGACION, Institut Universitaire de France, Université Sorbonne Paris Cité, Agencia Estatal de Investigación, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Agence Nationale de la Recherche, Francia, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Centre National de la Recherche Scientifique, Francia, Bundesministerium für Bildung und Forschung, Alemania, Consiliul National pentru Finantarea Invatamantului Superior, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Ministère de l'Enseignement Supérieur, de la Recherche Scientifique et de la Formation des Cadres, Albert, A., Alves, S., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J-J., Aublin, J., Baret, B., Basa, S., Belhorma, B., Bendahman, M., Bertin, V., Biagi, S., Bissinger, M., J. A. Martínez Mora, Poirè, Chiara, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Junta de Andalucía, Region Ile-de-France, GENERALITAT VALENCIANA, Conseil régional du Grand Est, AGENCIA ESTATAL DE INVESTIGACION, Institut Universitaire de France, Université Sorbonne Paris Cité, Agencia Estatal de Investigación, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Agence Nationale de la Recherche, Francia, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Centre National de la Recherche Scientifique, Francia, Bundesministerium für Bildung und Forschung, Alemania, Consiliul National pentru Finantarea Invatamantului Superior, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Ministère de l'Enseignement Supérieur, de la Recherche Scientifique et de la Formation des Cadres, Albert, A., Alves, S., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J-J., Aublin, J., Baret, B., Basa, S., Belhorma, B., Bendahman, M., Bertin, V., Biagi, S., Bissinger, M., J. A. Martínez Mora, and Poirè, Chiara
Abstract: [EN] This letter presents a combined measurement of the energy spectra of atmospheric nu(e) and nu(mu) in the energy range between similar to 100 GeV and similar to 50 TeV with the ANTARES neutrino telescope. The analysis uses 3012 days of detector livetime in the period 2007-2017, and selects 1016 neutrinos interacting in (or close to) the instrumented volume of the detector, yielding shower-like events (mainly from nu(e) + (nu) over bar (e) charged current plus all neutrino neutral current interactions) and starting track events (mainly from nu(mu) + (nu) over bar (mu) charged current interactions). The contamination by atmospheric muons in the final sample is suppressed at the level of a few per mill by different steps in the selection analysis, including a Boosted Decision Tree classifier. The distribution of reconstructed events is unfolded in terms of electron and muon neutrino fluxes. The derived energy spectra are compared with previous measurements that, above 100 GeV, are limited to experiments in polar ice and, for nu(mu), to Super-Kamiokande. (C) 2021 The Author(s). Published by Elsevier B.V.
Published: 2021

4. Model-independent search for neutrino sources with the ANTARES neutrino telescope

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, European Commission, Region Ile-de-France, Generalitat Valenciana, Conseil Régional d'Alsace, Ministerio de Economía y Empresa, Université Sorbonne Paris Cité, Institut Universitaire de France, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Ministerio de Economía y Competitividad, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Département du Var and Ville de La Seyne-sur-Mer, National Authority for Scientific Research, Rumanía, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, Foundation for Fundamental Research on Matter, Holanda, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Ministère de l'Education Nationale, de la Formation professionnelle, de l'Enseignement Supérieur et de la Recherche Scientifique, Marruecos, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J. J., Avgitas, T., Baret, B., Barrios-Marti, J., Basa, S., Bertin, V., Biagi, S., Bormuth, R., Bourret, S., Bouwhuis, M. C., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, European Commission, Region Ile-de-France, Generalitat Valenciana, Conseil Régional d'Alsace, Ministerio de Economía y Empresa, Université Sorbonne Paris Cité, Institut Universitaire de France, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Ministerio de Economía y Competitividad, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Département du Var and Ville de La Seyne-sur-Mer, National Authority for Scientific Research, Rumanía, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, Foundation for Fundamental Research on Matter, Holanda, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Ministère de l'Education Nationale, de la Formation professionnelle, de l'Enseignement Supérieur et de la Recherche Scientifique, Marruecos, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J. J., Avgitas, T., Baret, B., Barrios-Marti, J., Basa, S., Bertin, V., Biagi, S., Bormuth, R., Bourret, S., Bouwhuis, M. C., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, and Saldaña-Coscollar, María
Abstract: [EN] A novel method to analyse the spatial distribution of neutrino candidates recorded with the ANTARES neutrino telescope is introduced, searching for an excess of neutrinos in a region of arbitrary size and shape from any direction in the sky. Techniques originating from the domains of machine learning, pat- tern recognition and image processing are used to purify the sample of neutrino candidates and for the analysis of the obtained skymap. In contrast to a dedicated search for a speci¿c neutrino emission model, this approach is sensitive to a wide range of possible morphologies of potential sources of high-energy neutrino emission. The application of these methods to ANTARES data yields a large-scale excess with a post-trial signi¿cance of 2.5¿ . Applied to public data from IceCube in its IC40 con¿guration, an excess consistent with the results from ANTARES is observed with a post-trial signi¿cance of 2.1¿ .
Published: 2020

5. ANTARES and IceCube Combined Search for Neutrino Point-like and Extended Sources in the Southern Sky

Author: Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, Junta de Andalucía, Region Ile-de-France, GENERALITAT VALENCIANA, Conseil régional du Grand Est, AGENCIA ESTATAL DE INVESTIGACION, Institut Universitaire de France, Université Sorbonne Paris Cité, Agencia Estatal de Investigación, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Agence Nationale de la Recherche, Francia, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Centre National de la Recherche Scientifique, Francia, Bundesministerium für Bildung und Forschung, Alemania, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Ministère de l'Enseignement Supérieur, de la Recherche Scientifique et de la Formation des Cadres, Executive Agency for Higher Education, Scientific Research, Development and Innovation Funding, Rumanía, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J-J, Aublin, J., Baret, B., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bissinger, M., Boumaaza, J., Bourret, S., Martínez Mora, Juan Antonio, Poirè, Chiara, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, Junta de Andalucía, Region Ile-de-France, GENERALITAT VALENCIANA, Conseil régional du Grand Est, AGENCIA ESTATAL DE INVESTIGACION, Institut Universitaire de France, Université Sorbonne Paris Cité, Agencia Estatal de Investigación, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Agence Nationale de la Recherche, Francia, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Centre National de la Recherche Scientifique, Francia, Bundesministerium für Bildung und Forschung, Alemania, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Ministère de l'Enseignement Supérieur, de la Recherche Scientifique et de la Formation des Cadres, Executive Agency for Higher Education, Scientific Research, Development and Innovation Funding, Rumanía, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J-J, Aublin, J., Baret, B., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bissinger, M., Boumaaza, J., Bourret, S., Martínez Mora, Juan Antonio, and Poirè, Chiara
Abstract: [EN] A search for point-like and extended sources of cosmic neutrinos using data collected by the ANTARES and IceCube neutrino telescopes is presented. The data set consists of all the track-like and shower-like events pointing in the direction of the Southern Sky included in the nine-year ANTARES point-source analysis, combined with the throughgoing track-like events used in the seven-year IceCube point-source search. The advantageous ¿eld of view of ANTARES and the large size of IceCube are exploited to improve the sensitivity in the Southern Sky by a factor of ~2 compared to both individual analyses. In this work, the Southern Sky is scanned for possible excesses of spatial clustering, and the positions of preselected candidate sources are investigated. In addition, special focus is given to the region around the Galactic Center, whereby a dedicated search at the location of SgrA* is performed, and to the location of the supernova remnant RXJ 1713.7-3946. No signi¿cant evidence for cosmic neutrino sources is found, and upper limits on the ¿ux from the various searches are presented.
Published: 2020

6. Search for dark matter towards the Galactic Centre with 11 years of ANTARES data

Author: Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, Junta de Andalucía, Region Ile-de-France, GENERALITAT VALENCIANA, Conseil régional du Grand Est, AGENCIA ESTATAL DE INVESTIGACION, Institut Universitaire de France, Agencia Estatal de Investigación, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Agence Nationale de la Recherche, Francia, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Centre National de la Recherche Scientifique, Francia, Bundesministerium für Bildung und Forschung, Alemania, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Ministère de l'Enseignement Supérieur, de la Recherche Scientifique et de la Formation des Cadres, Executive Agency for Higher Education, Scientific Research, Development and Innovation Funding, Rumanía, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J-J., Aublin, J., Baret, B., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bissinger, M., Boumaaza, J., Bourret, S., Martínez Mora, Juan Antonio, Poirè, Chiara, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, Junta de Andalucía, Region Ile-de-France, GENERALITAT VALENCIANA, Conseil régional du Grand Est, AGENCIA ESTATAL DE INVESTIGACION, Institut Universitaire de France, Agencia Estatal de Investigación, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Agence Nationale de la Recherche, Francia, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Centre National de la Recherche Scientifique, Francia, Bundesministerium für Bildung und Forschung, Alemania, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Ministère de l'Enseignement Supérieur, de la Recherche Scientifique et de la Formation des Cadres, Executive Agency for Higher Education, Scientific Research, Development and Innovation Funding, Rumanía, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J-J., Aublin, J., Baret, B., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bissinger, M., Boumaaza, J., Bourret, S., Martínez Mora, Juan Antonio, and Poirè, Chiara
Abstract: [EN] Neutrino detectors participate in the indirect search for the fundamental constituents of dark matter (DM) in form of weakly interacting massive particles (WIMPs). In WIMP scenarios, candidate DM particles can pair-annihilate into Standard Model products, yielding considerable ¿uxes of high-energy neutrinos. A detector like ANTARES, located in the Northern Hemisphere, is able to perform a complementary search looking towards the Galactic Centre, where a high density of dark matter is thought to accumulate. Both this directional information and the spectral features of annihilating DM pairs are entered into an unbinned likelihood method to scan the data set in search for DM-like signals in ANTARES data. Results obtained upon unblinding 3170 days of data reconstructed with updated methods are presented, which provides a larger, and more accurate, data set than a previously published result using 2101 days. A non-observation of dark matter is converted into limits on the velocity-averaged cross section for WIMP pair annihilation.
Published: 2020

7. Combined search for neutrinos from dark matter self-annihilation in the Galactic Center with ANTARES and IceCube

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, A*Midex Foundation, Junta de Andalucía, Region Ile-de-France, GENERALITAT VALENCIANA, Conseil régional du Grand Est, AGENCIA ESTATAL DE INVESTIGACION, Institut Universitaire de France, Université Sorbonne Paris Cité, Agencia Estatal de Investigación, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Centre National de la Recherche Scientifique, Francia, Bundesministerium für Bildung und Forschung, Alemania, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Ministère de l'Enseignement Supérieur, de la Recherche Scientifique et de la Formation des Cadres, Executive Agency for Higher Education, Scientific Research, Development and Innovation Funding, Rumanía, Albert, A., Andre, M., Anghinolfi, M., Ardid Ramírez, Miguel, Aubert, J-J., Aublin, J., Baret, B., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bissinger, M., Boumaaza, J., Bouta, M., Bouwheis, M. C., Martínez Mora, Juan Antonio, Poirè, Chiara, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, A*Midex Foundation, Junta de Andalucía, Region Ile-de-France, GENERALITAT VALENCIANA, Conseil régional du Grand Est, AGENCIA ESTATAL DE INVESTIGACION, Institut Universitaire de France, Université Sorbonne Paris Cité, Agencia Estatal de Investigación, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Centre National de la Recherche Scientifique, Francia, Bundesministerium für Bildung und Forschung, Alemania, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Ministère de l'Enseignement Supérieur, de la Recherche Scientifique et de la Formation des Cadres, Executive Agency for Higher Education, Scientific Research, Development and Innovation Funding, Rumanía, Albert, A., Andre, M., Anghinolfi, M., Ardid Ramírez, Miguel, Aubert, J-J., Aublin, J., Baret, B., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bissinger, M., Boumaaza, J., Bouta, M., Bouwheis, M. C., Martínez Mora, Juan Antonio, and Poirè, Chiara
Abstract: [EN] We present the results of the first combined dark matter search targeting the Galactic Center using the ANTARES and IceCube neutrino telescopes. For dark matter particles with masses from 50 to 1000 GeV, the sensitivities on the self-annihilation cross section set by ANTARES and IceCube are comparable, making this mass range particularly interesting for a joint analysis. Dark matter self-annihilation through the ¿+¿¿, ¿+¿¿, b¯b, and W+W¿ channels is considered for both the Navarro-Frenk-White and Burkert halo profiles. In the combination of 2101.6 days of ANTARES data and 1007 days of IceCube data, no excess over the expected background is observed. Limits on the thermally averaged dark matter annihilation cross section h¿A¿i are set. These limits present an improvement of up to a factor of 2 in the studied dark matter mass range with respect to the individual limits published by both collaborations. When considering dark matter particles with a mass of 200 GeV annihilating through the ¿þ¿¿ channel, the value obtained for the limit is 7.44 × 10¿24 cm3 s¿1 for the Navarro-Frenk-White halo profile. For the purpose of this joint analysis, the model parameters and the likelihood are unified, providing a benchmark for forthcoming dark matter searches performed by neutrino telescopes.
Published: 2020

8. Search for dark matter towards the Galactic Centre with 11 years of ANTARES data

Author: Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, Junta de Andalucía, Region Ile-de-France, GENERALITAT VALENCIANA, Conseil régional du Grand Est, AGENCIA ESTATAL DE INVESTIGACION, Institut Universitaire de France, Agencia Estatal de Investigación, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Agence Nationale de la Recherche, Francia, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Centre National de la Recherche Scientifique, Francia, Bundesministerium für Bildung und Forschung, Alemania, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Ministère de l'Enseignement Supérieur, de la Recherche Scientifique et de la Formation des Cadres, Executive Agency for Higher Education, Scientific Research, Development and Innovation Funding, Rumanía, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J-J., Aublin, J., Baret, B., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bissinger, M., Boumaaza, J., Bourret, S., Martínez Mora, Juan Antonio, Poirè, Chiara, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, Junta de Andalucía, Region Ile-de-France, GENERALITAT VALENCIANA, Conseil régional du Grand Est, AGENCIA ESTATAL DE INVESTIGACION, Institut Universitaire de France, Agencia Estatal de Investigación, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Agence Nationale de la Recherche, Francia, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Centre National de la Recherche Scientifique, Francia, Bundesministerium für Bildung und Forschung, Alemania, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Ministère de l'Enseignement Supérieur, de la Recherche Scientifique et de la Formation des Cadres, Executive Agency for Higher Education, Scientific Research, Development and Innovation Funding, Rumanía, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J-J., Aublin, J., Baret, B., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bissinger, M., Boumaaza, J., Bourret, S., Martínez Mora, Juan Antonio, and Poirè, Chiara
Abstract: [EN] Neutrino detectors participate in the indirect search for the fundamental constituents of dark matter (DM) in form of weakly interacting massive particles (WIMPs). In WIMP scenarios, candidate DM particles can pair-annihilate into Standard Model products, yielding considerable ¿uxes of high-energy neutrinos. A detector like ANTARES, located in the Northern Hemisphere, is able to perform a complementary search looking towards the Galactic Centre, where a high density of dark matter is thought to accumulate. Both this directional information and the spectral features of annihilating DM pairs are entered into an unbinned likelihood method to scan the data set in search for DM-like signals in ANTARES data. Results obtained upon unblinding 3170 days of data reconstructed with updated methods are presented, which provides a larger, and more accurate, data set than a previously published result using 2101 days. A non-observation of dark matter is converted into limits on the velocity-averaged cross section for WIMP pair annihilation.
Published: 2020

9. Search for neutrino counterparts of gravitational-wave events detected by LIGO and Virgo during run O2 with the ANTARES telescope

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Junta de Andalucía, GENERALITAT VALENCIANA, AGENCIA ESTATAL DE INVESTIGACION, Université Sorbonne Paris Cité, Agencia Estatal de Investigación, Agence Nationale de la Recherche, Francia, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J-J, Aublin, J., Baret, B., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bissinger, M., J. Boumaaza, Bouta, M., Martínez Mora, Juan Antonio, Poirè, Chiara, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Junta de Andalucía, GENERALITAT VALENCIANA, AGENCIA ESTATAL DE INVESTIGACION, Université Sorbonne Paris Cité, Agencia Estatal de Investigación, Agence Nationale de la Recherche, Francia, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J-J, Aublin, J., Baret, B., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bissinger, M., J. Boumaaza, Bouta, M., Martínez Mora, Juan Antonio, and Poirè, Chiara
Abstract: [EN] An of¿ine search for a neutrino counterpart to gravitational-wave (GW) events detected during the second observation run (O2) of Advanced-LIGO and Advanced-Virgo performed with ANTARES data is presented. In addi-tion to the search for long tracks induced by ¿¿ (¿¿ bar) charged current interactions, a search for showering events induced by interactions of neutrinos of any ¿avour is conducted. The severe spatial and time coincidence provided by the gravitational-wave alert allows regions above the detector horizon to be probed, extending the ANTARES sensitivity over the entire sky. The results of this all-neutrino-¿avour and all-sky time dependent analysis are presented. The search for prompt neutrino emission within ±500 s around the time of six GW events yields no neutrino counterparts. Upper lim-its on the neutrino spectral ¿uence and constraints on the isotropic energy radiated via high-energy neutrinos (from a few TeV to a few tens of PeV) are set for each GW event analysed.
Published: 2020

10. Combined search for neutrinos from dark matter self-annihilation in the Galactic Center with ANTARES and IceCube

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, A*Midex Foundation, Junta de Andalucía, Region Ile-de-France, GENERALITAT VALENCIANA, Conseil régional du Grand Est, AGENCIA ESTATAL DE INVESTIGACION, Institut Universitaire de France, Université Sorbonne Paris Cité, Agencia Estatal de Investigación, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Centre National de la Recherche Scientifique, Francia, Bundesministerium für Bildung und Forschung, Alemania, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Ministère de l'Enseignement Supérieur, de la Recherche Scientifique et de la Formation des Cadres, Executive Agency for Higher Education, Scientific Research, Development and Innovation Funding, Rumanía, Albert, A., Andre, M., Anghinolfi, M., Ardid Ramírez, Miguel, Aubert, J-J., Aublin, J., Baret, B., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bissinger, M., Boumaaza, J., Bouta, M., Bouwheis, M. C., Martínez Mora, Juan Antonio, Poirè, Chiara, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, A*Midex Foundation, Junta de Andalucía, Region Ile-de-France, GENERALITAT VALENCIANA, Conseil régional du Grand Est, AGENCIA ESTATAL DE INVESTIGACION, Institut Universitaire de France, Université Sorbonne Paris Cité, Agencia Estatal de Investigación, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Centre National de la Recherche Scientifique, Francia, Bundesministerium für Bildung und Forschung, Alemania, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Ministère de l'Enseignement Supérieur, de la Recherche Scientifique et de la Formation des Cadres, Executive Agency for Higher Education, Scientific Research, Development and Innovation Funding, Rumanía, Albert, A., Andre, M., Anghinolfi, M., Ardid Ramírez, Miguel, Aubert, J-J., Aublin, J., Baret, B., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bissinger, M., Boumaaza, J., Bouta, M., Bouwheis, M. C., Martínez Mora, Juan Antonio, and Poirè, Chiara
Abstract: [EN] We present the results of the first combined dark matter search targeting the Galactic Center using the ANTARES and IceCube neutrino telescopes. For dark matter particles with masses from 50 to 1000 GeV, the sensitivities on the self-annihilation cross section set by ANTARES and IceCube are comparable, making this mass range particularly interesting for a joint analysis. Dark matter self-annihilation through the ¿+¿¿, ¿+¿¿, b¯b, and W+W¿ channels is considered for both the Navarro-Frenk-White and Burkert halo profiles. In the combination of 2101.6 days of ANTARES data and 1007 days of IceCube data, no excess over the expected background is observed. Limits on the thermally averaged dark matter annihilation cross section h¿A¿i are set. These limits present an improvement of up to a factor of 2 in the studied dark matter mass range with respect to the individual limits published by both collaborations. When considering dark matter particles with a mass of 200 GeV annihilating through the ¿þ¿¿ channel, the value obtained for the limit is 7.44 × 10¿24 cm3 s¿1 for the Navarro-Frenk-White halo profile. For the purpose of this joint analysis, the model parameters and the likelihood are unified, providing a benchmark for forthcoming dark matter searches performed by neutrino telescopes.
Published: 2020

11. ANTARES and IceCube Combined Search for Neutrino Point-like and Extended Sources in the Southern Sky

Author: Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, Junta de Andalucía, Region Ile-de-France, GENERALITAT VALENCIANA, Conseil régional du Grand Est, AGENCIA ESTATAL DE INVESTIGACION, Institut Universitaire de France, Université Sorbonne Paris Cité, Agencia Estatal de Investigación, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Agence Nationale de la Recherche, Francia, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Centre National de la Recherche Scientifique, Francia, Bundesministerium für Bildung und Forschung, Alemania, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Ministère de l'Enseignement Supérieur, de la Recherche Scientifique et de la Formation des Cadres, Executive Agency for Higher Education, Scientific Research, Development and Innovation Funding, Rumanía, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J-J, Aublin, J., Baret, B., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bissinger, M., Boumaaza, J., Bourret, S., Martínez Mora, Juan Antonio, Poirè, Chiara, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, Junta de Andalucía, Region Ile-de-France, GENERALITAT VALENCIANA, Conseil régional du Grand Est, AGENCIA ESTATAL DE INVESTIGACION, Institut Universitaire de France, Université Sorbonne Paris Cité, Agencia Estatal de Investigación, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Agence Nationale de la Recherche, Francia, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Centre National de la Recherche Scientifique, Francia, Bundesministerium für Bildung und Forschung, Alemania, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Ministère de l'Enseignement Supérieur, de la Recherche Scientifique et de la Formation des Cadres, Executive Agency for Higher Education, Scientific Research, Development and Innovation Funding, Rumanía, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J-J, Aublin, J., Baret, B., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bissinger, M., Boumaaza, J., Bourret, S., Martínez Mora, Juan Antonio, and Poirè, Chiara
Abstract: [EN] A search for point-like and extended sources of cosmic neutrinos using data collected by the ANTARES and IceCube neutrino telescopes is presented. The data set consists of all the track-like and shower-like events pointing in the direction of the Southern Sky included in the nine-year ANTARES point-source analysis, combined with the throughgoing track-like events used in the seven-year IceCube point-source search. The advantageous ¿eld of view of ANTARES and the large size of IceCube are exploited to improve the sensitivity in the Southern Sky by a factor of ~2 compared to both individual analyses. In this work, the Southern Sky is scanned for possible excesses of spatial clustering, and the positions of preselected candidate sources are investigated. In addition, special focus is given to the region around the Galactic Center, whereby a dedicated search at the location of SgrA* is performed, and to the location of the supernova remnant RXJ 1713.7-3946. No signi¿cant evidence for cosmic neutrino sources is found, and upper limits on the ¿ux from the various searches are presented.
Published: 2020

12. Observation of the cosmic ray shadow of the Sun with the ANTARES neutrino telescope

Author: Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, GENERALITAT VALENCIANA, AGENCIA ESTATAL DE INVESTIGACION, Agencia Estatal de Investigación, European Regional Development Fund, Agence Nationale de la Recherche, Francia, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J-J, Aublin, J., Baret, B., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bissinger, M., Boumaaza, J., Bouta, M., Martínez Mora, Juan Antonio, Poirè, Chiara, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, GENERALITAT VALENCIANA, AGENCIA ESTATAL DE INVESTIGACION, Agencia Estatal de Investigación, European Regional Development Fund, Agence Nationale de la Recherche, Francia, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J-J, Aublin, J., Baret, B., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bissinger, M., Boumaaza, J., Bouta, M., Martínez Mora, Juan Antonio, and Poirè, Chiara
Abstract: [EN] The ANTARES detector is an undersea neutrino telescope in the Mediterranean Sea. The search for pointlike neutrino sources is one of the main goals of the ANTARES telescope, requiring a reliable method to evaluate the detector angular resolution and pointing accuracy. This work describes the study of the Sun ¿shadow¿ effect with the ANTARES detector. The shadow is the deficit in the atmospheric muon flux in the direction of the Sun caused by the absorption of the primary cosmic rays. This analysis is based on the data collected between 2008 and 2017 by the ANTARES telescope. The observed statistical significance of the Sun shadow detection is 3.7¿, with an estimated angular resolution of 0.59° +- 0.10°for downward-going muons. The pointing accuracy is found to be consistent with the expectations and no evidence of systematic pointing shifts is observed.
Published: 2020

13. Model-independent search for neutrino sources with the ANTARES neutrino telescope

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, Agence Nationale de la Recherche, Francia, European Commission, Region Ile-de-France, Generalitat Valenciana, Conseil Régional d'Alsace, Université Sorbonne Paris Cité, Institut Universitaire de France, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Ministerio de Economía y Competitividad, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Département du Var and Ville de La Seyne-sur-Mer, National Authority for Scientific Research, Rumanía, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, Foundation for Fundamental Research on Matter, Holanda, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Ministère de l'Education Nationale, de la Formation professionnelle, de l'Enseignement Supérieur et de la Recherche Scientifique, Marruecos, Ministerio de Ciencia e Innovación, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J. J., Avgitas, T., Baret, B., Barrios-Marti, J., Basa, S., Bertin, V., Biagi, S., Bormuth, R., Bourret, S., Bouwhuis, M. C., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, Agence Nationale de la Recherche, Francia, European Commission, Region Ile-de-France, Generalitat Valenciana, Conseil Régional d'Alsace, Université Sorbonne Paris Cité, Institut Universitaire de France, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Ministerio de Economía y Competitividad, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Département du Var and Ville de La Seyne-sur-Mer, National Authority for Scientific Research, Rumanía, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, Foundation for Fundamental Research on Matter, Holanda, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Ministère de l'Education Nationale, de la Formation professionnelle, de l'Enseignement Supérieur et de la Recherche Scientifique, Marruecos, Ministerio de Ciencia e Innovación, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J. J., Avgitas, T., Baret, B., Barrios-Marti, J., Basa, S., Bertin, V., Biagi, S., Bormuth, R., Bourret, S., Bouwhuis, M. C., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, and Saldaña-Coscollar, María
Abstract: [EN] A novel method to analyse the spatial distribution of neutrino candidates recorded with the ANTARES neutrino telescope is introduced, searching for an excess of neutrinos in a region of arbitrary size and shape from any direction in the sky. Techniques originating from the domains of machine learning, pat- tern recognition and image processing are used to purify the sample of neutrino candidates and for the analysis of the obtained skymap. In contrast to a dedicated search for a speci¿c neutrino emission model, this approach is sensitive to a wide range of possible morphologies of potential sources of high-energy neutrino emission. The application of these methods to ANTARES data yields a large-scale excess with a post-trial signi¿cance of 2.5¿ . Applied to public data from IceCube in its IC40 con¿guration, an excess consistent with the results from ANTARES is observed with a post-trial signi¿cance of 2.1¿ .
Published: 2020

14. Combined search for neutrinos from dark matter self-annihilation in the Galactic Center with ANTARES and IceCube

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, A*Midex Foundation, Junta de Andalucía, Region Ile-de-France, GENERALITAT VALENCIANA, Conseil régional du Grand Est, AGENCIA ESTATAL DE INVESTIGACION, Institut Universitaire de France, Université Sorbonne Paris Cité, Agencia Estatal de Investigación, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Centre National de la Recherche Scientifique, Francia, Bundesministerium für Bildung und Forschung, Alemania, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Ministère de l'Enseignement Supérieur, de la Recherche Scientifique et de la Formation des Cadres, Executive Agency for Higher Education, Scientific Research, Development and Innovation Funding, Rumanía, Albert, A., Andre, M., Anghinolfi, M., Ardid Ramírez, Miguel, Aubert, J-J., Aublin, J., Baret, B., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bissinger, M., Boumaaza, J., Bouta, M., Bouwheis, M. C., Martínez Mora, Juan Antonio, Poirè, Chiara, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, A*Midex Foundation, Junta de Andalucía, Region Ile-de-France, GENERALITAT VALENCIANA, Conseil régional du Grand Est, AGENCIA ESTATAL DE INVESTIGACION, Institut Universitaire de France, Université Sorbonne Paris Cité, Agencia Estatal de Investigación, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Centre National de la Recherche Scientifique, Francia, Bundesministerium für Bildung und Forschung, Alemania, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Ministère de l'Enseignement Supérieur, de la Recherche Scientifique et de la Formation des Cadres, Executive Agency for Higher Education, Scientific Research, Development and Innovation Funding, Rumanía, Albert, A., Andre, M., Anghinolfi, M., Ardid Ramírez, Miguel, Aubert, J-J., Aublin, J., Baret, B., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bissinger, M., Boumaaza, J., Bouta, M., Bouwheis, M. C., Martínez Mora, Juan Antonio, and Poirè, Chiara
Abstract: [EN] We present the results of the first combined dark matter search targeting the Galactic Center using the ANTARES and IceCube neutrino telescopes. For dark matter particles with masses from 50 to 1000 GeV, the sensitivities on the self-annihilation cross section set by ANTARES and IceCube are comparable, making this mass range particularly interesting for a joint analysis. Dark matter self-annihilation through the ¿+¿¿, ¿+¿¿, b¯b, and W+W¿ channels is considered for both the Navarro-Frenk-White and Burkert halo profiles. In the combination of 2101.6 days of ANTARES data and 1007 days of IceCube data, no excess over the expected background is observed. Limits on the thermally averaged dark matter annihilation cross section h¿A¿i are set. These limits present an improvement of up to a factor of 2 in the studied dark matter mass range with respect to the individual limits published by both collaborations. When considering dark matter particles with a mass of 200 GeV annihilating through the ¿þ¿¿ channel, the value obtained for the limit is 7.44 × 10¿24 cm3 s¿1 for the Navarro-Frenk-White halo profile. For the purpose of this joint analysis, the model parameters and the likelihood are unified, providing a benchmark for forthcoming dark matter searches performed by neutrino telescopes.
Published: 2020

15. ANTARES and IceCube Combined Search for Neutrino Point-like and Extended Sources in the Southern Sky

Author: Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, Junta de Andalucía, Region Ile-de-France, GENERALITAT VALENCIANA, Conseil régional du Grand Est, AGENCIA ESTATAL DE INVESTIGACION, Institut Universitaire de France, Université Sorbonne Paris Cité, Agencia Estatal de Investigación, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Agence Nationale de la Recherche, Francia, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Centre National de la Recherche Scientifique, Francia, Bundesministerium für Bildung und Forschung, Alemania, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Ministère de l'Enseignement Supérieur, de la Recherche Scientifique et de la Formation des Cadres, Executive Agency for Higher Education, Scientific Research, Development and Innovation Funding, Rumanía, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J-J, Aublin, J., Baret, B., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bissinger, M., Boumaaza, J., Bourret, S., Martínez Mora, Juan Antonio, Poirè, Chiara, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, Junta de Andalucía, Region Ile-de-France, GENERALITAT VALENCIANA, Conseil régional du Grand Est, AGENCIA ESTATAL DE INVESTIGACION, Institut Universitaire de France, Université Sorbonne Paris Cité, Agencia Estatal de Investigación, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Agence Nationale de la Recherche, Francia, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Centre National de la Recherche Scientifique, Francia, Bundesministerium für Bildung und Forschung, Alemania, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Ministère de l'Enseignement Supérieur, de la Recherche Scientifique et de la Formation des Cadres, Executive Agency for Higher Education, Scientific Research, Development and Innovation Funding, Rumanía, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J-J, Aublin, J., Baret, B., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bissinger, M., Boumaaza, J., Bourret, S., Martínez Mora, Juan Antonio, and Poirè, Chiara
Abstract: [EN] A search for point-like and extended sources of cosmic neutrinos using data collected by the ANTARES and IceCube neutrino telescopes is presented. The data set consists of all the track-like and shower-like events pointing in the direction of the Southern Sky included in the nine-year ANTARES point-source analysis, combined with the throughgoing track-like events used in the seven-year IceCube point-source search. The advantageous ¿eld of view of ANTARES and the large size of IceCube are exploited to improve the sensitivity in the Southern Sky by a factor of ~2 compared to both individual analyses. In this work, the Southern Sky is scanned for possible excesses of spatial clustering, and the positions of preselected candidate sources are investigated. In addition, special focus is given to the region around the Galactic Center, whereby a dedicated search at the location of SgrA* is performed, and to the location of the supernova remnant RXJ 1713.7-3946. No signi¿cant evidence for cosmic neutrino sources is found, and upper limits on the ¿ux from the various searches are presented.
Published: 2020

16. Search for neutrino counterparts of gravitational-wave events detected by LIGO and Virgo during run O2 with the ANTARES telescope

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Junta de Andalucía, GENERALITAT VALENCIANA, AGENCIA ESTATAL DE INVESTIGACION, Université Sorbonne Paris Cité, Agencia Estatal de Investigación, Agence Nationale de la Recherche, Francia, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J-J, Aublin, J., Baret, B., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bissinger, M., J. Boumaaza, Bouta, M., Martínez Mora, Juan Antonio, Poirè, Chiara, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Junta de Andalucía, GENERALITAT VALENCIANA, AGENCIA ESTATAL DE INVESTIGACION, Université Sorbonne Paris Cité, Agencia Estatal de Investigación, Agence Nationale de la Recherche, Francia, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J-J, Aublin, J., Baret, B., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bissinger, M., J. Boumaaza, Bouta, M., Martínez Mora, Juan Antonio, and Poirè, Chiara
Abstract: [EN] An of¿ine search for a neutrino counterpart to gravitational-wave (GW) events detected during the second observation run (O2) of Advanced-LIGO and Advanced-Virgo performed with ANTARES data is presented. In addi-tion to the search for long tracks induced by ¿¿ (¿¿ bar) charged current interactions, a search for showering events induced by interactions of neutrinos of any ¿avour is conducted. The severe spatial and time coincidence provided by the gravitational-wave alert allows regions above the detector horizon to be probed, extending the ANTARES sensitivity over the entire sky. The results of this all-neutrino-¿avour and all-sky time dependent analysis are presented. The search for prompt neutrino emission within ±500 s around the time of six GW events yields no neutrino counterparts. Upper lim-its on the neutrino spectral ¿uence and constraints on the isotropic energy radiated via high-energy neutrinos (from a few TeV to a few tens of PeV) are set for each GW event analysed.
Published: 2020

17. Search for dark matter towards the Galactic Centre with 11 years of ANTARES data

Author: Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, Junta de Andalucía, Region Ile-de-France, GENERALITAT VALENCIANA, Conseil régional du Grand Est, AGENCIA ESTATAL DE INVESTIGACION, Institut Universitaire de France, Agencia Estatal de Investigación, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Agence Nationale de la Recherche, Francia, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Centre National de la Recherche Scientifique, Francia, Bundesministerium für Bildung und Forschung, Alemania, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Ministère de l'Enseignement Supérieur, de la Recherche Scientifique et de la Formation des Cadres, Executive Agency for Higher Education, Scientific Research, Development and Innovation Funding, Rumanía, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J-J., Aublin, J., Baret, B., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bissinger, M., Boumaaza, J., Bourret, S., Martínez Mora, Juan Antonio, Poirè, Chiara, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, Junta de Andalucía, Region Ile-de-France, GENERALITAT VALENCIANA, Conseil régional du Grand Est, AGENCIA ESTATAL DE INVESTIGACION, Institut Universitaire de France, Agencia Estatal de Investigación, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Agence Nationale de la Recherche, Francia, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Centre National de la Recherche Scientifique, Francia, Bundesministerium für Bildung und Forschung, Alemania, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Ministère de l'Enseignement Supérieur, de la Recherche Scientifique et de la Formation des Cadres, Executive Agency for Higher Education, Scientific Research, Development and Innovation Funding, Rumanía, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J-J., Aublin, J., Baret, B., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bissinger, M., Boumaaza, J., Bourret, S., Martínez Mora, Juan Antonio, and Poirè, Chiara
Abstract: [EN] Neutrino detectors participate in the indirect search for the fundamental constituents of dark matter (DM) in form of weakly interacting massive particles (WIMPs). In WIMP scenarios, candidate DM particles can pair-annihilate into Standard Model products, yielding considerable ¿uxes of high-energy neutrinos. A detector like ANTARES, located in the Northern Hemisphere, is able to perform a complementary search looking towards the Galactic Centre, where a high density of dark matter is thought to accumulate. Both this directional information and the spectral features of annihilating DM pairs are entered into an unbinned likelihood method to scan the data set in search for DM-like signals in ANTARES data. Results obtained upon unblinding 3170 days of data reconstructed with updated methods are presented, which provides a larger, and more accurate, data set than a previously published result using 2101 days. A non-observation of dark matter is converted into limits on the velocity-averaged cross section for WIMP pair annihilation.
Published: 2020

18. Measuring the atmospheric neutrino oscillation parameters and constraining the 3+1 neutrino model with ten years of ANTARES data

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, Generalitat Valenciana, Ministerio de Economía y Empresa, Université Sorbonne Paris Cité, Institut Universitaire de France, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Ministerio de Economía y Competitividad, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Ministerio de Ciencia, Innovación y Universidades, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Executive Agency for Higher Education, Scientific Research, Development and Innovation Funding, Rumanía, Ministère de l'Education Nationale, de la Formation professionnelle, de l'Enseignement Supérieur et de la Recherche Scientifique, Marruecos, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J.-J., Aublin, J., Avgitas, T., Baret, B., Barrios-Marti, J., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bormuth, R., Martínez Mora, Juan Antonio, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, Generalitat Valenciana, Ministerio de Economía y Empresa, Université Sorbonne Paris Cité, Institut Universitaire de France, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Ministerio de Economía y Competitividad, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Ministerio de Ciencia, Innovación y Universidades, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Executive Agency for Higher Education, Scientific Research, Development and Innovation Funding, Rumanía, Ministère de l'Education Nationale, de la Formation professionnelle, de l'Enseignement Supérieur et de la Recherche Scientifique, Marruecos, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J.-J., Aublin, J., Avgitas, T., Baret, B., Barrios-Marti, J., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bormuth, R., and Martínez Mora, Juan Antonio
Abstract: [EN] The ANTARES neutrino telescope has an energy threshold of a few tens of GeV. This allows to study the phenomenon of atmospheric muon neutrino disappearance due to neutrino oscillations. In a similar way, constraints on the 3+1 neutrino model, which foresees the existence of one sterile neutrino, can be inferred. Using data collected by the ANTARES neutrino telescope from 2007 to 2016, a new measurement of Dm2 32 and 023 has been performed - which is consistent with world best- t values - and constraints on the 3+1 neutrino model have been derived.
Published: 2019

19. Measuring the atmospheric neutrino oscillation parameters and constraining the 3+1 neutrino model with ten years of ANTARES data

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, Agence Nationale de la Recherche, Francia, Generalitat Valenciana, Université Sorbonne Paris Cité, Institut Universitaire de France, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Ministerio de Economía y Competitividad, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Executive Agency for Higher Education, Scientific Research, Development and Innovation Funding, Rumanía, Ministère de l'Education Nationale, de la Formation professionnelle, de l'Enseignement Supérieur et de la Recherche Scientifique, Marruecos, Agencia Estatal de Investigación, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J.-J., Aublin, J., Avgitas, T., Baret, B., Barrios-Marti, J., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bormuth, R., Martínez Mora, Juan Antonio, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, Agence Nationale de la Recherche, Francia, Generalitat Valenciana, Université Sorbonne Paris Cité, Institut Universitaire de France, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Ministerio de Economía y Competitividad, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Executive Agency for Higher Education, Scientific Research, Development and Innovation Funding, Rumanía, Ministère de l'Education Nationale, de la Formation professionnelle, de l'Enseignement Supérieur et de la Recherche Scientifique, Marruecos, Agencia Estatal de Investigación, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J.-J., Aublin, J., Avgitas, T., Baret, B., Barrios-Marti, J., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bormuth, R., and Martínez Mora, Juan Antonio
Abstract: [EN] The ANTARES neutrino telescope has an energy threshold of a few tens of GeV. This allows to study the phenomenon of atmospheric muon neutrino disappearance due to neutrino oscillations. In a similar way, constraints on the 3+1 neutrino model, which foresees the existence of one sterile neutrino, can be inferred. Using data collected by the ANTARES neutrino telescope from 2007 to 2016, a new measurement of Dm2 32 and 023 has been performed - which is consistent with world best- t values - and constraints on the 3+1 neutrino model have been derived.
Published: 2019

20. The Search for Neutrinos from TXS 0506+056 with the ANTARES Telescope

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, Region Ile-de-France, Generalitat Valenciana, Ministerio de Economía y Empresa, Université Sorbonne Paris Cité, Institut Universitaire de France, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Ministerio de Economía y Competitividad, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, National Authority for Scientific Research, Rumanía, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Ministère de l'Education Nationale, de la Formation professionnelle, de l'Enseignement Supérieur et de la Recherche Scientifique, Marruecos, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J-J, Aublin, J., Avgitas, T., Baret, B., Barrios-Marti, J., Basa, S., Belhorma, B., Benin, V., Biagi, S., Bormuth, R., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, Region Ile-de-France, Generalitat Valenciana, Ministerio de Economía y Empresa, Université Sorbonne Paris Cité, Institut Universitaire de France, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Ministerio de Economía y Competitividad, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, National Authority for Scientific Research, Rumanía, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Ministère de l'Education Nationale, de la Formation professionnelle, de l'Enseignement Supérieur et de la Recherche Scientifique, Marruecos, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J-J, Aublin, J., Avgitas, T., Baret, B., Barrios-Marti, J., Basa, S., Belhorma, B., Benin, V., Biagi, S., Bormuth, R., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, and Saldaña-Coscollar, María
Abstract: [EN] The results of three different searches for neutrino candidates, associated with the IceCube-170922A event or from the direction of TXS 0506+056, by the ANTARES neutrino telescope, are presented. The ¿rst search refers to the online follow-up of the IceCube alert; the second is based on the standard time-integrated method employed by the Collaboration to search for point-like neutrino sources; the third uses information from the IceCube time-dependent analysis that reported bursting activity centered on 2014 December 13, as input for an ANTARES time-dependent analysis. The online follow-up and the time-dependent analysis yield no events related to the source. The time-integrated study performed over a period from 2007 to 2017 ¿ts 1.03 signal events, which corresponds to a p-value of 3.4% (not considering trial factors). Only for two other astrophysical objects in our candidate list has a smaller p-value been found. When considering that 107 sources have been investigated, the post-trial p-value for TXS 0506+056 corresponds to 87%.
Published: 2018

21. The cosmic ray shadow of the Moon observed with the ANTARES neutrino telescope

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, Region Ile-de-France, Generalitat Valenciana, Ministerio de Economía y Empresa, Université Sorbonne Paris Cité, Institut Universitaire de France, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Ministerio de Economía y Competitividad, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Département du Var and Ville de La Seyne-sur-Mer, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, National Authority for Scientific Research, Rumanía, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Universidad Autónoma de Madrid, Ministère de l'Education Nationale, de la Formation professionnelle, de l'Enseignement Supérieur et de la Recherche Scientifique, Marruecos, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J. -J., Aublin, J., Avgitas, T., Baret, B., Barrios-Martit, J., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bormuth, R., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, Region Ile-de-France, Generalitat Valenciana, Ministerio de Economía y Empresa, Université Sorbonne Paris Cité, Institut Universitaire de France, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Ministerio de Economía y Competitividad, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Département du Var and Ville de La Seyne-sur-Mer, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, National Authority for Scientific Research, Rumanía, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Universidad Autónoma de Madrid, Ministère de l'Education Nationale, de la Formation professionnelle, de l'Enseignement Supérieur et de la Recherche Scientifique, Marruecos, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J. -J., Aublin, J., Avgitas, T., Baret, B., Barrios-Martit, J., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bormuth, R., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, and Saldaña-Coscollar, María
Abstract: [EN] One of the main objectives of the ANTARES telescope is the search for point-like neutrino sources. Both the pointing accuracy and the angular resolution of the detector are important in this context and a reliable way to evaluate this performance is needed. In order to measure the pointing accuracy of the detector, one possibility is to study the shadow of the Moon, i.e. the de¿cit of the atmospheric muon ¿ux from the direction of the Moon induced by the absorption of cosmic rays. Analysing the data taken between 2007 and 2016, the Moon shadow is observed with 3.5¿ statistical signi¿cance. The detector angular resolution for downward-going muons is 0.73¿ ±0.14¿. The resulting pointing performance is consistent with the expectations. An independent check of the telescope pointing accuracy is realised with the data collected by a shower array detector onboard of a ship temporarily moving around the ANTARES location.
Published: 2018

22. Joint Constraints on Galactic Diffuse Neutrino Emission from the ANTARES and IceCube Neutrino Telescopes

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Ministerio de Economía y Empresa, Universidad Autónoma de Madrid, Albert, A., Andre, M., Anghinolfi, M., Ardid Ramírez, Miguel, Aubert, J. -J., Aublin, J., Avgitas, T., Baret, B., Barrios-Marti, J., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bormuth, R., Boumaaza, J., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Ministerio de Economía y Empresa, Universidad Autónoma de Madrid, Albert, A., Andre, M., Anghinolfi, M., Ardid Ramírez, Miguel, Aubert, J. -J., Aublin, J., Avgitas, T., Baret, B., Barrios-Marti, J., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bormuth, R., Boumaaza, J., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, and Saldaña-Coscollar, María
Abstract: [EN] The existence of diffuse Galactic neutrino production is expected from cosmic-ray interactions with Galactic gas and radiation ¿elds. Thus, neutrinos are a unique messenger offering the opportunity to test the products of Galactic cosmic-ray interactions up to energies of hundreds of TeV. Here we present a search for this production using ten years of Astronomy with a Neutrino Telescope and Abyss environmental RESearch (ANTARES) track and shower data, as well as seven years of IceCube track data. The data are combined into a joint likelihood test for neutrino emission according to the KRAg model assuming a 5 PeV per nucleon Galactic cosmic-ray cutoff. No signi¿cant excess is found. As a consequence, the limits presented in this Letter start constraining the model parameter space for Galactic cosmic-ray production and transport.
Published: 2018

23. The Search for Neutrinos from TXS 0506+056 with the ANTARES Telescope

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, Agence Nationale de la Recherche, Francia, Region Ile-de-France, Generalitat Valenciana, Université Sorbonne Paris Cité, Institut Universitaire de France, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Ministerio de Economía y Competitividad, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, National Authority for Scientific Research, Rumanía, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Ministère de l'Education Nationale, de la Formation professionnelle, de l'Enseignement Supérieur et de la Recherche Scientifique, Marruecos, Ministerio de Ciencia e Innovación, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J-J, Aublin, J., Avgitas, T., Baret, B., Barrios-Marti, J., Basa, S., Belhorma, B., Benin, V., Biagi, S., Bormuth, R., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, Agence Nationale de la Recherche, Francia, Region Ile-de-France, Generalitat Valenciana, Université Sorbonne Paris Cité, Institut Universitaire de France, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Ministerio de Economía y Competitividad, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, National Authority for Scientific Research, Rumanía, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Ministère de l'Education Nationale, de la Formation professionnelle, de l'Enseignement Supérieur et de la Recherche Scientifique, Marruecos, Ministerio de Ciencia e Innovación, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J-J, Aublin, J., Avgitas, T., Baret, B., Barrios-Marti, J., Basa, S., Belhorma, B., Benin, V., Biagi, S., Bormuth, R., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, and Saldaña-Coscollar, María
Abstract: [EN] The results of three different searches for neutrino candidates, associated with the IceCube-170922A event or from the direction of TXS 0506+056, by the ANTARES neutrino telescope, are presented. The ¿rst search refers to the online follow-up of the IceCube alert; the second is based on the standard time-integrated method employed by the Collaboration to search for point-like neutrino sources; the third uses information from the IceCube time-dependent analysis that reported bursting activity centered on 2014 December 13, as input for an ANTARES time-dependent analysis. The online follow-up and the time-dependent analysis yield no events related to the source. The time-integrated study performed over a period from 2007 to 2017 ¿ts 1.03 signal events, which corresponds to a p-value of 3.4% (not considering trial factors). Only for two other astrophysical objects in our candidate list has a smaller p-value been found. When considering that 107 sources have been investigated, the post-trial p-value for TXS 0506+056 corresponds to 87%.
Published: 2018

24. The cosmic ray shadow of the Moon observed with the ANTARES neutrino telescope

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, Agence Nationale de la Recherche, Francia, Region Ile-de-France, Generalitat Valenciana, Université Sorbonne Paris Cité, Institut Universitaire de France, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Ministerio de Economía y Competitividad, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Département du Var and Ville de La Seyne-sur-Mer, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, National Authority for Scientific Research, Rumanía, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Universidad Autónoma de Madrid, Ministère de l'Education Nationale, de la Formation professionnelle, de l'Enseignement Supérieur et de la Recherche Scientifique, Marruecos, Ministerio de Ciencia e Innovación, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J. -J., Aublin, J., Avgitas, T., Baret, B., Barrios-Martit, J., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bormuth, R., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, Agence Nationale de la Recherche, Francia, Region Ile-de-France, Generalitat Valenciana, Université Sorbonne Paris Cité, Institut Universitaire de France, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Ministerio de Economía y Competitividad, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Département du Var and Ville de La Seyne-sur-Mer, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, National Authority for Scientific Research, Rumanía, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Universidad Autónoma de Madrid, Ministère de l'Education Nationale, de la Formation professionnelle, de l'Enseignement Supérieur et de la Recherche Scientifique, Marruecos, Ministerio de Ciencia e Innovación, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J. -J., Aublin, J., Avgitas, T., Baret, B., Barrios-Martit, J., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bormuth, R., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, and Saldaña-Coscollar, María
Abstract: [EN] One of the main objectives of the ANTARES telescope is the search for point-like neutrino sources. Both the pointing accuracy and the angular resolution of the detector are important in this context and a reliable way to evaluate this performance is needed. In order to measure the pointing accuracy of the detector, one possibility is to study the shadow of the Moon, i.e. the de¿cit of the atmospheric muon ¿ux from the direction of the Moon induced by the absorption of cosmic rays. Analysing the data taken between 2007 and 2016, the Moon shadow is observed with 3.5¿ statistical signi¿cance. The detector angular resolution for downward-going muons is 0.73¿ ±0.14¿. The resulting pointing performance is consistent with the expectations. An independent check of the telescope pointing accuracy is realised with the data collected by a shower array detector onboard of a ship temporarily moving around the ANTARES location.
Published: 2018

25. Joint Constraints on Galactic Diffuse Neutrino Emission from the ANTARES and IceCube Neutrino Telescopes

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Universidad Autónoma de Madrid, Ministerio de Ciencia e Innovación, Ministerio de Economía y Competitividad, Albert, A., Andre, M., Anghinolfi, M., Ardid Ramírez, Miguel, Aubert, J. -J., Aublin, J., Avgitas, T., Baret, B., Barrios-Marti, J., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bormuth, R., Boumaaza, J., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Universidad Autónoma de Madrid, Ministerio de Ciencia e Innovación, Ministerio de Economía y Competitividad, Albert, A., Andre, M., Anghinolfi, M., Ardid Ramírez, Miguel, Aubert, J. -J., Aublin, J., Avgitas, T., Baret, B., Barrios-Marti, J., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bormuth, R., Boumaaza, J., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, and Saldaña-Coscollar, María
Abstract: [EN] The existence of diffuse Galactic neutrino production is expected from cosmic-ray interactions with Galactic gas and radiation ¿elds. Thus, neutrinos are a unique messenger offering the opportunity to test the products of Galactic cosmic-ray interactions up to energies of hundreds of TeV. Here we present a search for this production using ten years of Astronomy with a Neutrino Telescope and Abyss environmental RESearch (ANTARES) track and shower data, as well as seven years of IceCube track data. The data are combined into a joint likelihood test for neutrino emission according to the KRAg model assuming a 5 PeV per nucleon Galactic cosmic-ray cutoff. No signi¿cant excess is found. As a consequence, the limits presented in this Letter start constraining the model parameter space for Galactic cosmic-ray production and transport.
Published: 2018

26. Long-term monitoring of the ANTARES optical module efficiencies using K-40 decays in sea water

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J.-J., Aublin, J., Avgitas, T., Baret, B., Barrios-Marti, J., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bormuth, R., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J.-J., Aublin, J., Avgitas, T., Baret, B., Barrios-Marti, J., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bormuth, R., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, and Saldaña-Coscollar, María
Abstract: [EN] Cherenkov light induced by radioactive decay products is one of the major sources of background light for deep-sea neutrino telescopes such as ANTARES. These decays are at the same time a powerful calibration source. Using data collected by the ANTARES neutrino telescope from mid 2008 to 2017, the time evolution of the photon detection ef¿ciency of optical modules is studied. A modest loss of only 20% in 9 years is observed. The relative time calibration between adjacent modules is derived as well.
Published: 2018

27. Long-term monitoring of the ANTARES optical module efficiencies using K-40 decays in sea water

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J.-J., Aublin, J., Avgitas, T., Baret, B., Barrios-Marti, J., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bormuth, R., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J.-J., Aublin, J., Avgitas, T., Baret, B., Barrios-Marti, J., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bormuth, R., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, and Saldaña-Coscollar, María
Abstract: [EN] Cherenkov light induced by radioactive decay products is one of the major sources of background light for deep-sea neutrino telescopes such as ANTARES. These decays are at the same time a powerful calibration source. Using data collected by the ANTARES neutrino telescope from mid 2008 to 2017, the time evolution of the photon detection ef¿ciency of optical modules is studied. A modest loss of only 20% in 9 years is observed. The relative time calibration between adjacent modules is derived as well.
Published: 2018

28. An algorithm for the reconstruction of high-energy neutrino-induced particle showers and its application to the ANTARES neutrino telescope

Author: Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Ministerio de Economía y Competitividad, Conseil Régional Provence-Alpes-Côte d'Azur, Conseil Régional d'Alsace, Agence Nationale de la Recherche, Francia, National Authority for Scientific Research, Rumanía, Institut Universitaire de France, Bundesministerium für Bildung und Forschung, Alemania, Foundation for Fundamental Research on Matter, Holanda, Centre National de la Recherche Scientifique, Francia, Ministère de l'Education Nationale, de la Formation professionnelle, de l'Enseignement Supérieur et de la Recherche Scientifique, Marruecos, European Regional Development Fund, Council on grants of the President of the Russian Federation, Netherlands Organization for Scientific Research, Region Ile-de-France, Generalitat Valenciana, Instituto Nazionale di Fisica Nucleare, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, European Commission, Ardid Ramírez, Miguel, Felis-Enguix, Iván, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Aubert, J. -J., Avgitas, T., Baret, B., Barrios-Martí, J., Basa, S., Bertin, V., Biagi, S., Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Ministerio de Economía y Competitividad, Conseil Régional Provence-Alpes-Côte d'Azur, Conseil Régional d'Alsace, Agence Nationale de la Recherche, Francia, National Authority for Scientific Research, Rumanía, Institut Universitaire de France, Bundesministerium für Bildung und Forschung, Alemania, Foundation for Fundamental Research on Matter, Holanda, Centre National de la Recherche Scientifique, Francia, Ministère de l'Education Nationale, de la Formation professionnelle, de l'Enseignement Supérieur et de la Recherche Scientifique, Marruecos, European Regional Development Fund, Council on grants of the President of the Russian Federation, Netherlands Organization for Scientific Research, Region Ile-de-France, Generalitat Valenciana, Instituto Nazionale di Fisica Nucleare, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, European Commission, Ardid Ramírez, Miguel, Felis-Enguix, Iván, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Aubert, J. -J., Avgitas, T., Baret, B., Barrios-Martí, J., Basa, S., Bertin, V., and Biagi, S.
Abstract: A novel algorithm to reconstruct neutrino-induced particle showers within the ANTARES neutrino telescope is presented. The method achieves a median angular resolution of 6º, for shower energies below 100 TeV. Applying this algorithm to 6 years of data taken with the ANTARES detector, 8 events with reconstructed shower energies above 10 TeV are observed. This is consistent with the expectation of about 5 events from atmospheric backgrounds, but also compatible with diffuse astrophysical flux measurements by the IceCube collaboration, from which 2 4 additional events are expected. A 90% C.L. upper limit on the diffuse astrophysical neutrino flux with a value per neutrino flavour of E2·Oi 90% =4.9 cm-2· sr-1 is set, applicable to the energy range from 23 TeV to 7.8 PeV, assuming an unbroken E-2 spectrum and neutrino flavour equipartition at Earth.
Published: 2017

29. An algorithm for the reconstruction of high-energy neutrino-induced particle showers and its application to the ANTARES neutrino telescope

Author: Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Ministerio de Economía y Competitividad, Conseil Régional Provence-Alpes-Côte d'Azur, Conseil Régional d'Alsace, Agence Nationale de la Recherche, Francia, National Authority for Scientific Research, Rumanía, Institut Universitaire de France, Bundesministerium für Bildung und Forschung, Alemania, Foundation for Fundamental Research on Matter, Holanda, Centre National de la Recherche Scientifique, Francia, Ministère de l'Education Nationale, de la Formation professionnelle, de l'Enseignement Supérieur et de la Recherche Scientifique, Marruecos, European Regional Development Fund, Council on grants of the President of the Russian Federation, Netherlands Organization for Scientific Research, Region Ile-de-France, Generalitat Valenciana, Instituto Nazionale di Fisica Nucleare, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, European Commission, Ardid Ramírez, Miguel, Felis-Enguix, Iván, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Aubert, J. -J., Avgitas, T., Baret, B., Barrios-Martí, J., Basa, S., Bertin, V., Biagi, S., Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Ministerio de Economía y Competitividad, Conseil Régional Provence-Alpes-Côte d'Azur, Conseil Régional d'Alsace, Agence Nationale de la Recherche, Francia, National Authority for Scientific Research, Rumanía, Institut Universitaire de France, Bundesministerium für Bildung und Forschung, Alemania, Foundation for Fundamental Research on Matter, Holanda, Centre National de la Recherche Scientifique, Francia, Ministère de l'Education Nationale, de la Formation professionnelle, de l'Enseignement Supérieur et de la Recherche Scientifique, Marruecos, European Regional Development Fund, Council on grants of the President of the Russian Federation, Netherlands Organization for Scientific Research, Region Ile-de-France, Generalitat Valenciana, Instituto Nazionale di Fisica Nucleare, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, European Commission, Ardid Ramírez, Miguel, Felis-Enguix, Iván, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Aubert, J. -J., Avgitas, T., Baret, B., Barrios-Martí, J., Basa, S., Bertin, V., and Biagi, S.
Abstract: A novel algorithm to reconstruct neutrino-induced particle showers within the ANTARES neutrino telescope is presented. The method achieves a median angular resolution of 6º, for shower energies below 100 TeV. Applying this algorithm to 6 years of data taken with the ANTARES detector, 8 events with reconstructed shower energies above 10 TeV are observed. This is consistent with the expectation of about 5 events from atmospheric backgrounds, but also compatible with diffuse astrophysical flux measurements by the IceCube collaboration, from which 2 4 additional events are expected. A 90% C.L. upper limit on the diffuse astrophysical neutrino flux with a value per neutrino flavour of E2·Oi 90% =4.9 cm-2· sr-1 is set, applicable to the energy range from 23 TeV to 7.8 PeV, assuming an unbroken E-2 spectrum and neutrino flavour equipartition at Earth.
Published: 2017

30. The first combined search for neutrino point-sources in the Southern Hemisphere with the ANTARES and IceCube neutrino telescopes

Author: Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Escuela Técnica Superior de Ingeniería del Diseño - Escola Tècnica Superior d'Enginyeria del Disseny, Universitat Politècnica de València. Escuela Politécnica Superior de Gandia - Escola Politècnica Superior de Gandia, Adrián Martínez, Silvia, Albert, A., André, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J. -J., Baret, B., Barrios Martí, J., Basa, S., Bertin, V., Biagi, S., Bormuth, R., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Escuela Técnica Superior de Ingeniería del Diseño - Escola Tècnica Superior d'Enginyeria del Disseny, Universitat Politècnica de València. Escuela Politécnica Superior de Gandia - Escola Politècnica Superior de Gandia, Adrián Martínez, Silvia, Albert, A., André, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J. -J., Baret, B., Barrios Martí, J., Basa, S., Bertin, V., Biagi, S., Bormuth, R., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, and Saldaña-Coscollar, María
Abstract: We present the results of searches for point-like sources of neutrinos based on the first combined analysis of data from both the ANTARES and IceCube neutrino telescopes. The combination of both detectors, which differ in size and location, forms a window in the southern sky where the sensitivity to point sources improves by up to a factor of 2 compared with individual analyses. Using data recorded by ANTARES from 2007 to 2012, and by IceCube from 2008 to 2011, we search for sources of neutrino emission both across the southern sky and from a preselected list of candidate objects. No signicant excess over background has been found in these searches, and flux upper limits for the candidate sources are presented for E-2.5 and E-2 power-law spectra with different energy cut-offs.
Published: 2016

31. Time calibration with atmospheric muon tracks in the ANTARES neutrino telescope

Author: Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Escuela Técnica Superior de Ingeniería del Diseño - Escola Tècnica Superior d'Enginyeria del Disseny, Universitat Politècnica de València. Escuela Politécnica Superior de Gandia - Escola Politècnica Superior de Gandia, Conseil Régional Provence-Alpes-Côte d'Azur, Ministerio de Ciencia e Innovación, Conseil Régional, Île-de-France, Conseil Régional d'Alsace, Instituto Nazionale di Fisica Nucleare, Netherlands Organization for Scientific Research, Generalitat Valenciana, European Commission, Foundation for Fundamental Research on Matter, Holanda, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, National Authority for Scientific Research, Rumanía, European Regional Development Fund, Centre National pour la Recherche Scientifique et Technique, Marruecos, Agence de l'Oriental, Marruecos, Bundesministerium für Bildung und Forschung, Alemania, Ministerio de Economía y Competitividad, Centre National de la Recherche Scientifique, Francia, Adrián Martínez, Silvia, Albert, A., André, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J.-J., Baret, B., Barrios Martí, J., Basa, S., Bertin, V., Bou Cabo, Manuel, Felis Enguix, Iván, Herrero Debón, Alicia, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Escuela Técnica Superior de Ingeniería del Diseño - Escola Tècnica Superior d'Enginyeria del Disseny, Universitat Politècnica de València. Escuela Politécnica Superior de Gandia - Escola Politècnica Superior de Gandia, Conseil Régional Provence-Alpes-Côte d'Azur, Ministerio de Ciencia e Innovación, Conseil Régional, Île-de-France, Conseil Régional d'Alsace, Instituto Nazionale di Fisica Nucleare, Netherlands Organization for Scientific Research, Generalitat Valenciana, European Commission, Foundation for Fundamental Research on Matter, Holanda, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, National Authority for Scientific Research, Rumanía, European Regional Development Fund, Centre National pour la Recherche Scientifique et Technique, Marruecos, Agence de l'Oriental, Marruecos, Bundesministerium für Bildung und Forschung, Alemania, Ministerio de Economía y Competitividad, Centre National de la Recherche Scientifique, Francia, Adrián Martínez, Silvia, Albert, A., André, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J.-J., Baret, B., Barrios Martí, J., Basa, S., Bertin, V., Bou Cabo, Manuel, Felis Enguix, Iván, Herrero Debón, Alicia, Martínez Mora, Juan Antonio, and Saldaña-Coscollar, María
Abstract: The ANTARES experiment consists of an array of photomultipliers distributed along 12 lines and located deep underwater in the Mediterranean Sea. It searches for astrophysical neutrinos collecting the Cherenkov light induced by the charged particles, mainly muons, produced in neutrino interactions around the detector. Since at energies of ∼10 TeV the muon and the incident neutrino are almost collinear, it is possible to use the ANTARES detector as a neutrino telescope and identify a source of neutrinos in the sky starting from a precise reconstruction of the muon trajectory. To get this result, the arrival times of the Cherenkov photons must be accurately measured. A to perform time calibrations with the precision required to have optimal performances of the instrument is described. The reconstructed tracks of the atmospheric muons in the ANTARES detector are used to determine the relative time off- sets between photomultipliers. Currently, this method is used to obtain the time calibration constants for photomultipliers on different lines at a precision level of 0.5 ns. It has also been validated for calibrating photomultipliers on the same line, using a system of LEDs and laser light devices.
Published: 2016

32. The first combined search for neutrino point-sources in the Southern Hemisphere with the ANTARES and IceCube neutrino telescopes

Author: Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Escuela Técnica Superior de Ingeniería del Diseño - Escola Tècnica Superior d'Enginyeria del Disseny, Universitat Politècnica de València. Escuela Politécnica Superior de Gandia - Escola Politècnica Superior de Gandia, Conseil Régional Provence-Alpes-Côte d'Azur, Ministerio de Ciencia e Innovación, Conseil Régional, Île-de-France, Conseil Régional d'Alsace, University of Wisconsin-Madison, Compute Canada, National Energy Research Scientific Computing Center, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Centre National pour la Recherche Scientifique et Technique, Marruecos, Office of Polar Programs, University of Oxford, Fonds de la Recherche Scientifique, Belgica, Danish National Research Foundation, Ruhr University Bochum, Alemania, Wisconsin Alumni Research Foundation, Swedish Research Council, Helmholtz Alliance for Astroparticle Physics, Swiss National Science Foundation, Western Canada Research Grid, Japan Society for the Promotion of Science, Council on grants of the President of the Russian Federation, Agence de l'Oriental, Marruecos, European Commission, Instituto Nazionale di Fisica Nucleare, Foundation for Fundamental Research on Matter, Holanda, Swedish Polar Research Secretariat, Ministerio de Economía y Competitividad, Deutsche Forschungsgemeinschaft, Louisiana State University, Agency for Innovation by Science and Technology, Flanders, National Research Foundation of Korea, Generalitat Valenciana, Netherlands Organization for Scientific Research, Marsden Fund, National Authority for Scientific Research, Rumanía, Natural Sciences and Engineering Research Council of Canada, Département du Var and Ville de La Seyne-sur-Mer, Belgian Federal Science Policy Office, Australian Research Council, Bundesministerium für Bildung und Forschung, Alemania, Research Foundation Flanders, Centre National de la Recherche Scientifique, Francia, National Science Foundation, EEUU, U.S. Department of Energy, European Regional Development Fund, Knut and Alice Wallenberg Foundation, Uppsala University, Adrián Martínez, Silvia, Albert, A., André, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J. -J., Baret, B., Barrios Martí, J., Basa, S., Bertin, V., Biagi, S., Bormuth, R., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Escuela Técnica Superior de Ingeniería del Diseño - Escola Tècnica Superior d'Enginyeria del Disseny, Universitat Politècnica de València. Escuela Politécnica Superior de Gandia - Escola Politècnica Superior de Gandia, Conseil Régional Provence-Alpes-Côte d'Azur, Ministerio de Ciencia e Innovación, Conseil Régional, Île-de-France, Conseil Régional d'Alsace, University of Wisconsin-Madison, Compute Canada, National Energy Research Scientific Computing Center, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Centre National pour la Recherche Scientifique et Technique, Marruecos, Office of Polar Programs, University of Oxford, Fonds de la Recherche Scientifique, Belgica, Danish National Research Foundation, Ruhr University Bochum, Alemania, Wisconsin Alumni Research Foundation, Swedish Research Council, Helmholtz Alliance for Astroparticle Physics, Swiss National Science Foundation, Western Canada Research Grid, Japan Society for the Promotion of Science, Council on grants of the President of the Russian Federation, Agence de l'Oriental, Marruecos, European Commission, Instituto Nazionale di Fisica Nucleare, Foundation for Fundamental Research on Matter, Holanda, Swedish Polar Research Secretariat, Ministerio de Economía y Competitividad, Deutsche Forschungsgemeinschaft, Louisiana State University, Agency for Innovation by Science and Technology, Flanders, National Research Foundation of Korea, Generalitat Valenciana, Netherlands Organization for Scientific Research, Marsden Fund, National Authority for Scientific Research, Rumanía, Natural Sciences and Engineering Research Council of Canada, Département du Var and Ville de La Seyne-sur-Mer, Belgian Federal Science Policy Office, Australian Research Council, Bundesministerium für Bildung und Forschung, Alemania, Research Foundation Flanders, Centre National de la Recherche Scientifique, Francia, National Science Foundation, EEUU, U.S. Department of Energy, European Regional Development Fund, Knut and Alice Wallenberg Foundation, Uppsala University, Adrián Martínez, Silvia, Albert, A., André, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J. -J., Baret, B., Barrios Martí, J., Basa, S., Bertin, V., Biagi, S., Bormuth, R., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, and Saldaña-Coscollar, María
Abstract: We present the results of searches for point-like sources of neutrinos based on the first combined analysis of data from both the ANTARES and IceCube neutrino telescopes. The combination of both detectors, which differ in size and location, forms a window in the southern sky where the sensitivity to point sources improves by up to a factor of 2 compared with individual analyses. Using data recorded by ANTARES from 2007 to 2012, and by IceCube from 2008 to 2011, we search for sources of neutrino emission both across the southern sky and from a preselected list of candidate objects. No signicant excess over background has been found in these searches, and flux upper limits for the candidate sources are presented for E-2.5 and E-2 power-law spectra with different energy cut-offs.
Published: 2016

33. Optical and X-ray early follow-up of ANTARES neutrino alerts

Author: Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Escuela Técnica Superior de Ingeniería del Diseño - Escola Tècnica Superior d'Enginyeria del Disseny, Universitat Politècnica de València. Escuela Politécnica Superior de Gandia - Escola Politècnica Superior de Gandia, Conseil Régional Provence-Alpes-Côte d'Azur, Ministerio de Ciencia e Innovación, Conseil Régional d'Alsace, Agence Nationale de la Recherche, Francia, Region Ile-de-France, European Regional Development Fund, Département du Var and Ville de La Seyne-sur-Mer, Foundation for Fundamental Research on Matter, Holanda, Council on grants of the President of the Russian Federation, National Authority for Scientific Research, Rumanía, Centre National pour la Recherche Scientifique et Technique, Marruecos, Netherlands Organization for Scientific Research, Centre National de la Recherche Scientifique, Francia, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Bundesministerium für Bildung und Forschung, Alemania, Instituto Nazionale di Fisica Nucleare, Generalitat Valenciana, European Commission, Agence de l'Oriental, Marruecos, Adrián Martínez, Silvia, Ardid Ramírez, Miguel, Bou Cabo, Manuel, Felis-Enguix, Iván, Herrero Debón, Alicia, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Ageron, M., Albert, A., Al Samarai, I., André, M., Anton, G., Aubert, J. -J., Baret, B., Barrios-Martí, J., Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Escuela Técnica Superior de Ingeniería del Diseño - Escola Tècnica Superior d'Enginyeria del Disseny, Universitat Politècnica de València. Escuela Politécnica Superior de Gandia - Escola Politècnica Superior de Gandia, Conseil Régional Provence-Alpes-Côte d'Azur, Ministerio de Ciencia e Innovación, Conseil Régional d'Alsace, Agence Nationale de la Recherche, Francia, Region Ile-de-France, European Regional Development Fund, Département du Var and Ville de La Seyne-sur-Mer, Foundation for Fundamental Research on Matter, Holanda, Council on grants of the President of the Russian Federation, National Authority for Scientific Research, Rumanía, Centre National pour la Recherche Scientifique et Technique, Marruecos, Netherlands Organization for Scientific Research, Centre National de la Recherche Scientifique, Francia, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Bundesministerium für Bildung und Forschung, Alemania, Instituto Nazionale di Fisica Nucleare, Generalitat Valenciana, European Commission, Agence de l'Oriental, Marruecos, Adrián Martínez, Silvia, Ardid Ramírez, Miguel, Bou Cabo, Manuel, Felis-Enguix, Iván, Herrero Debón, Alicia, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Ageron, M., Albert, A., Al Samarai, I., André, M., Anton, G., Aubert, J. -J., Baret, B., and Barrios-Martí, J.
Abstract: High-energy neutrinos could be produced in the interaction of charged cosmic rays with matter or radiation surrounding astrophysical sources. Even with the recent detection of extraterrestrial high-energy neutrinos by the IceCube experiment, no astrophysical neutrino source has yet been discovered. Transient sources, such as gamma-ray bursts, core-collapse supernovae, or active galactic nuclei are promising candidates. Multi-messenger programs oﬀer a unique opportunity to detect these transient sources. By combining the information provided by the ANTARES neutrino telescope with information coming from other observa-tories, the probability of detecting a source is enhanced, allowing the possibility of identifying a neutrino progenitor from a single detected event. A method based on optical and X-ray follow-ups of high-energy neutrino alerts has been developed within the ANTARES collaboration. This method does not require any assumptions on the relation between neutrino and photon spectra other than time-correlation. This program, denoted as TAToO, triggers a network of robotic optical telescopes (TAROT and ROTSE) and the Swift-XRT with a delay of only a few seconds after a neutrino detection, and is therefore well-suited to search for fast transient sources. To identify an optical or X-ray counterpart to a neutrino signal, the images provided by the follow-up observations are analysed with dedicated pipelines. A total of 42 alerts with optical and 7 alerts with X-ray images taken with a maximum delay of 24 hours after the neutrino trigger have been analysed. No optical or X-ray counterparts associated to the neutrino triggers have been found, and upper limits on transient source magnitudes have been derived. The probability to reject the gamma-ray burst origin hypothesis has been computed for each alert.
Published: 2016

34. A search for Secluded Dark Matter in the Sun with the ANTARES neutrino telescope

Author: Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Escuela Técnica Superior de Ingeniería del Diseño - Escola Tècnica Superior d'Enginyeria del Disseny, Universitat Politècnica de València. Escuela Politécnica Superior de Gandia - Escola Politècnica Superior de Gandia, Conseil Régional Provence-Alpes-Côte d'Azur, Ministerio de Ciencia e Innovación, Conseil Régional d'Alsace, Agence Nationale de la Recherche, Francia, Département du Var and Ville de La Seyne-sur-Mer, Region Ile-de-France, Instituto Nazionale di Fisica Nucleare, Bundesministerium für Bildung und Forschung, Alemania, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Centre National de la Recherche Scientifique, Francia, Agence de l'Oriental, Marruecos, Foundation for Fundamental Research on Matter, Holanda, Centre National pour la Recherche Scientifique et Technique, Marruecos, Ministerio de Economía y Competitividad, Netherlands Organization for Scientific Research, European Commission, National Authority for Scientific Research, Rumanía, Institut Universitaire de France, European Regional Development Fund, Generalitat Valenciana, Adrián Martínez, Silvia, Albert, A., Andre, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J. -J., Avgitas, T., Baret, B., Barrios Marti, J., Basa, S., Bertin, V., Bou Cabo, Manuel, Felis Enguix, Iván, Martínez Mora, Juan Antonio, Saldaña Coscollar, María, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Escuela Técnica Superior de Ingeniería del Diseño - Escola Tècnica Superior d'Enginyeria del Disseny, Universitat Politècnica de València. Escuela Politécnica Superior de Gandia - Escola Politècnica Superior de Gandia, Conseil Régional Provence-Alpes-Côte d'Azur, Ministerio de Ciencia e Innovación, Conseil Régional d'Alsace, Agence Nationale de la Recherche, Francia, Département du Var and Ville de La Seyne-sur-Mer, Region Ile-de-France, Instituto Nazionale di Fisica Nucleare, Bundesministerium für Bildung und Forschung, Alemania, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Centre National de la Recherche Scientifique, Francia, Agence de l'Oriental, Marruecos, Foundation for Fundamental Research on Matter, Holanda, Centre National pour la Recherche Scientifique et Technique, Marruecos, Ministerio de Economía y Competitividad, Netherlands Organization for Scientific Research, European Commission, National Authority for Scientific Research, Rumanía, Institut Universitaire de France, European Regional Development Fund, Generalitat Valenciana, Adrián Martínez, Silvia, Albert, A., Andre, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J. -J., Avgitas, T., Baret, B., Barrios Marti, J., Basa, S., Bertin, V., Bou Cabo, Manuel, Felis Enguix, Iván, Martínez Mora, Juan Antonio, and Saldaña Coscollar, María
Abstract: A search for Secluded Dark Matter annihilation in the Sun using 2007 2012 data of the ANTARES neutrino telescope is presented. Three different cases are considered: a) detection of dimuons that result from the decay of the mediator, or neutrino detection from: b) mediator that decays into a dimuon and, in turn, into neutrinos, and c) mediator that decays directly into neutrinos. As no significant excess over background is observed, constraints are derived on the dark matter mass and the lifetime of the mediator.
Published: 2016

35. Limits on dark matter annihilation in the sun using the ANTARES neutrino telescope

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Centre National de la Recherche Scientifique, Francia, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, European Commission, European Regional Development Fund, Institut Universitaire de France, Conseil Régional d'Alsace, Conseil Régional Provence-Alpes-Côte d'Azur, Département du Var and Ville de La Seyne-sur-Mer, Bundesministerium für Bildung und Forschung, Alemania, Instituto Nazionale di Fisica Nucleare, Foundation for Fundamental Research on Matter, Holanda, Netherlands Organization for Scientific Research, Council on grants of the President of the Russian Federation, National Authority for Scientific Research, Rumanía, Ministerio de Economía y Competitividad, Generalitat Valenciana, Agence de l'Oriental, Marruecos, Centre National pour la Recherche Scientifique et Technique, Marruecos, Agence Nationale de la Recherche, Francia, Conseil Régional, Île-de-France, Adrián Martínez, Silvia, Albert, A., André, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J-J., Avgitas, T., Baret, B., Barrios-Martí, J., Basa, S., Bertin, V., Biagi, S., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Centre National de la Recherche Scientifique, Francia, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, European Commission, European Regional Development Fund, Institut Universitaire de France, Conseil Régional d'Alsace, Conseil Régional Provence-Alpes-Côte d'Azur, Département du Var and Ville de La Seyne-sur-Mer, Bundesministerium für Bildung und Forschung, Alemania, Instituto Nazionale di Fisica Nucleare, Foundation for Fundamental Research on Matter, Holanda, Netherlands Organization for Scientific Research, Council on grants of the President of the Russian Federation, National Authority for Scientific Research, Rumanía, Ministerio de Economía y Competitividad, Generalitat Valenciana, Agence de l'Oriental, Marruecos, Centre National pour la Recherche Scientifique et Technique, Marruecos, Agence Nationale de la Recherche, Francia, Conseil Régional, Île-de-France, Adrián Martínez, Silvia, Albert, A., André, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J-J., Avgitas, T., Baret, B., Barrios-Martí, J., Basa, S., Bertin, V., Biagi, S., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, and Saldaña-Coscollar, María
Abstract: [EN] A search for muon neutrinos originating from dark matter annihilations in the Sun is performed using the data recorded by the ANTARES neutrino telescope from 2007 to 2012. In order to obtain the best possible sensitivities to dark matter signals, an optimisation of the event selection criteria is performed taking into account the background of atmospheric muons, atmospheric neutrinos and the energy spectra of the expected neutrino signals. No significant excess over the background is observed and 90% C.L. upper limits on the neutrino flux, the spin-dependent and spin-independent WIMP-nucleon cross-sections are derived for WIMP masses ranging from 50 GeV to 5TeV for the annihilation channels WIMP + WIMP -> bb¯, W +W- and t+t-.
Published: 2016

36. Optical and X-ray early follow-up of ANTARES neutrino alerts

Author: Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Escuela Técnica Superior de Ingeniería del Diseño - Escola Tècnica Superior d'Enginyeria del Disseny, Universitat Politècnica de València. Escuela Politécnica Superior de Gandia - Escola Politècnica Superior de Gandia, Conseil Régional Provence-Alpes-Côte d'Azur, Ministerio de Ciencia e Innovación, Conseil Régional d'Alsace, Agence Nationale de la Recherche, Francia, Region Ile-de-France, European Regional Development Fund, Département du Var and Ville de La Seyne-sur-Mer, Foundation for Fundamental Research on Matter, Holanda, Council on grants of the President of the Russian Federation, National Authority for Scientific Research, Rumanía, Centre National pour la Recherche Scientifique et Technique, Marruecos, Netherlands Organization for Scientific Research, Centre National de la Recherche Scientifique, Francia, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Bundesministerium für Bildung und Forschung, Alemania, Instituto Nazionale di Fisica Nucleare, Generalitat Valenciana, European Commission, Agence de l'Oriental, Marruecos, Adrián Martínez, Silvia, Ardid Ramírez, Miguel, Bou Cabo, Manuel, Felis-Enguix, Iván, Herrero Debón, Alicia, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Ageron, M., Albert, A., Al Samarai, I., André, M., Anton, G., Aubert, J. -J., Baret, B., Barrios-Martí, J., Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Escuela Técnica Superior de Ingeniería del Diseño - Escola Tècnica Superior d'Enginyeria del Disseny, Universitat Politècnica de València. Escuela Politécnica Superior de Gandia - Escola Politècnica Superior de Gandia, Conseil Régional Provence-Alpes-Côte d'Azur, Ministerio de Ciencia e Innovación, Conseil Régional d'Alsace, Agence Nationale de la Recherche, Francia, Region Ile-de-France, European Regional Development Fund, Département du Var and Ville de La Seyne-sur-Mer, Foundation for Fundamental Research on Matter, Holanda, Council on grants of the President of the Russian Federation, National Authority for Scientific Research, Rumanía, Centre National pour la Recherche Scientifique et Technique, Marruecos, Netherlands Organization for Scientific Research, Centre National de la Recherche Scientifique, Francia, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Bundesministerium für Bildung und Forschung, Alemania, Instituto Nazionale di Fisica Nucleare, Generalitat Valenciana, European Commission, Agence de l'Oriental, Marruecos, Adrián Martínez, Silvia, Ardid Ramírez, Miguel, Bou Cabo, Manuel, Felis-Enguix, Iván, Herrero Debón, Alicia, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Ageron, M., Albert, A., Al Samarai, I., André, M., Anton, G., Aubert, J. -J., Baret, B., and Barrios-Martí, J.
Abstract: High-energy neutrinos could be produced in the interaction of charged cosmic rays with matter or radiation surrounding astrophysical sources. Even with the recent detection of extraterrestrial high-energy neutrinos by the IceCube experiment, no astrophysical neutrino source has yet been discovered. Transient sources, such as gamma-ray bursts, core-collapse supernovae, or active galactic nuclei are promising candidates. Multi-messenger programs oﬀer a unique opportunity to detect these transient sources. By combining the information provided by the ANTARES neutrino telescope with information coming from other observa-tories, the probability of detecting a source is enhanced, allowing the possibility of identifying a neutrino progenitor from a single detected event. A method based on optical and X-ray follow-ups of high-energy neutrino alerts has been developed within the ANTARES collaboration. This method does not require any assumptions on the relation between neutrino and photon spectra other than time-correlation. This program, denoted as TAToO, triggers a network of robotic optical telescopes (TAROT and ROTSE) and the Swift-XRT with a delay of only a few seconds after a neutrino detection, and is therefore well-suited to search for fast transient sources. To identify an optical or X-ray counterpart to a neutrino signal, the images provided by the follow-up observations are analysed with dedicated pipelines. A total of 42 alerts with optical and 7 alerts with X-ray images taken with a maximum delay of 24 hours after the neutrino trigger have been analysed. No optical or X-ray counterparts associated to the neutrino triggers have been found, and upper limits on transient source magnitudes have been derived. The probability to reject the gamma-ray burst origin hypothesis has been computed for each alert.
Published: 2016

37. A search for Secluded Dark Matter in the Sun with the ANTARES neutrino telescope

Author: Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Escuela Técnica Superior de Ingeniería del Diseño - Escola Tècnica Superior d'Enginyeria del Disseny, Universitat Politècnica de València. Escuela Politécnica Superior de Gandia - Escola Politècnica Superior de Gandia, Conseil Régional Provence-Alpes-Côte d'Azur, Ministerio de Ciencia e Innovación, Conseil Régional d'Alsace, Agence Nationale de la Recherche, Francia, Département du Var and Ville de La Seyne-sur-Mer, Region Ile-de-France, Instituto Nazionale di Fisica Nucleare, Bundesministerium für Bildung und Forschung, Alemania, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Centre National de la Recherche Scientifique, Francia, Agence de l'Oriental, Marruecos, Foundation for Fundamental Research on Matter, Holanda, Centre National pour la Recherche Scientifique et Technique, Marruecos, Ministerio de Economía y Competitividad, Netherlands Organization for Scientific Research, European Commission, National Authority for Scientific Research, Rumanía, Institut Universitaire de France, European Regional Development Fund, Generalitat Valenciana, Adrián Martínez, Silvia, Albert, A., Andre, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J. -J., Avgitas, T., Baret, B., Barrios Marti, J., Basa, S., Bertin, V., Bou Cabo, Manuel, Felis Enguix, Iván, Martínez Mora, Juan Antonio, Saldaña Coscollar, María, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Escuela Técnica Superior de Ingeniería del Diseño - Escola Tècnica Superior d'Enginyeria del Disseny, Universitat Politècnica de València. Escuela Politécnica Superior de Gandia - Escola Politècnica Superior de Gandia, Conseil Régional Provence-Alpes-Côte d'Azur, Ministerio de Ciencia e Innovación, Conseil Régional d'Alsace, Agence Nationale de la Recherche, Francia, Département du Var and Ville de La Seyne-sur-Mer, Region Ile-de-France, Instituto Nazionale di Fisica Nucleare, Bundesministerium für Bildung und Forschung, Alemania, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Centre National de la Recherche Scientifique, Francia, Agence de l'Oriental, Marruecos, Foundation for Fundamental Research on Matter, Holanda, Centre National pour la Recherche Scientifique et Technique, Marruecos, Ministerio de Economía y Competitividad, Netherlands Organization for Scientific Research, European Commission, National Authority for Scientific Research, Rumanía, Institut Universitaire de France, European Regional Development Fund, Generalitat Valenciana, Adrián Martínez, Silvia, Albert, A., Andre, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J. -J., Avgitas, T., Baret, B., Barrios Marti, J., Basa, S., Bertin, V., Bou Cabo, Manuel, Felis Enguix, Iván, Martínez Mora, Juan Antonio, and Saldaña Coscollar, María
Abstract: A search for Secluded Dark Matter annihilation in the Sun using 2007 2012 data of the ANTARES neutrino telescope is presented. Three different cases are considered: a) detection of dimuons that result from the decay of the mediator, or neutrino detection from: b) mediator that decays into a dimuon and, in turn, into neutrinos, and c) mediator that decays directly into neutrinos. As no significant excess over background is observed, constraints are derived on the dark matter mass and the lifetime of the mediator.
Published: 2016

38. Time calibration with atmospheric muon tracks in the ANTARES neutrino telescope

Author: Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Escuela Técnica Superior de Ingeniería del Diseño - Escola Tècnica Superior d'Enginyeria del Disseny, Universitat Politècnica de València. Escuela Politécnica Superior de Gandia - Escola Politècnica Superior de Gandia, Conseil Régional Provence-Alpes-Côte d'Azur, Ministerio de Ciencia e Innovación, Conseil Régional, Île-de-France, Conseil Régional d'Alsace, Instituto Nazionale di Fisica Nucleare, Netherlands Organization for Scientific Research, Generalitat Valenciana, European Commission, Foundation for Fundamental Research on Matter, Holanda, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, National Authority for Scientific Research, Rumanía, European Regional Development Fund, Centre National pour la Recherche Scientifique et Technique, Marruecos, Agence de l'Oriental, Marruecos, Bundesministerium für Bildung und Forschung, Alemania, Ministerio de Economía y Competitividad, Centre National de la Recherche Scientifique, Francia, Adrián Martínez, Silvia, Albert, A., André, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J.-J., Baret, B., Barrios Martí, J., Basa, S., Bertin, V., Bou Cabo, Manuel, Felis Enguix, Iván, Herrero Debón, Alicia, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Escuela Técnica Superior de Ingeniería del Diseño - Escola Tècnica Superior d'Enginyeria del Disseny, Universitat Politècnica de València. Escuela Politécnica Superior de Gandia - Escola Politècnica Superior de Gandia, Conseil Régional Provence-Alpes-Côte d'Azur, Ministerio de Ciencia e Innovación, Conseil Régional, Île-de-France, Conseil Régional d'Alsace, Instituto Nazionale di Fisica Nucleare, Netherlands Organization for Scientific Research, Generalitat Valenciana, European Commission, Foundation for Fundamental Research on Matter, Holanda, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, National Authority for Scientific Research, Rumanía, European Regional Development Fund, Centre National pour la Recherche Scientifique et Technique, Marruecos, Agence de l'Oriental, Marruecos, Bundesministerium für Bildung und Forschung, Alemania, Ministerio de Economía y Competitividad, Centre National de la Recherche Scientifique, Francia, Adrián Martínez, Silvia, Albert, A., André, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J.-J., Baret, B., Barrios Martí, J., Basa, S., Bertin, V., Bou Cabo, Manuel, Felis Enguix, Iván, Herrero Debón, Alicia, Martínez Mora, Juan Antonio, and Saldaña-Coscollar, María
Abstract: The ANTARES experiment consists of an array of photomultipliers distributed along 12 lines and located deep underwater in the Mediterranean Sea. It searches for astrophysical neutrinos collecting the Cherenkov light induced by the charged particles, mainly muons, produced in neutrino interactions around the detector. Since at energies of ∼10 TeV the muon and the incident neutrino are almost collinear, it is possible to use the ANTARES detector as a neutrino telescope and identify a source of neutrinos in the sky starting from a precise reconstruction of the muon trajectory. To get this result, the arrival times of the Cherenkov photons must be accurately measured. A to perform time calibrations with the precision required to have optimal performances of the instrument is described. The reconstructed tracks of the atmospheric muons in the ANTARES detector are used to determine the relative time off- sets between photomultipliers. Currently, this method is used to obtain the time calibration constants for photomultipliers on different lines at a precision level of 0.5 ns. It has also been validated for calibrating photomultipliers on the same line, using a system of LEDs and laser light devices.
Published: 2016

39. A search for time dependent neutrino emission from microquasars with the ANTARES telescope

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Centre National de la Recherche Scientifique, Francia, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Agence Nationale de la Recherche, Francia, European Commission, European Regional Development Fund, Conseil Régional d'Alsace, Conseil Régional Provence-Alpes-Côte d'Azur, Département du Var and Ville de La Seyne-sur-Mer, Bundesministerium für Bildung und Forschung, Alemania, Instituto Nazionale di Fisica Nucleare, Foundation for Fundamental Research on Matter, Holanda, Netherlands Organization for Scientific Research, Council on grants of the President of the Russian Federation, National Authority for Scientific Research, Rumanía, Ministerio de Ciencia e Innovación, Generalitat Valenciana, Agence de l'Oriental, Marruecos, Centre National pour la Recherche Scientifique et Technique, Marruecos, Adrián Martínez, Silvia, Ardid Ramírez, Miguel, Felis-Enguix, Iván, Larosa, Giuseppina, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Albert, A., André, M., Anghinolfi, M., Anton, G., Astraatmadja, T., Aubert, J.-J., Baret, B., Barrios, J., Basa, S., Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Centre National de la Recherche Scientifique, Francia, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Agence Nationale de la Recherche, Francia, European Commission, European Regional Development Fund, Conseil Régional d'Alsace, Conseil Régional Provence-Alpes-Côte d'Azur, Département du Var and Ville de La Seyne-sur-Mer, Bundesministerium für Bildung und Forschung, Alemania, Instituto Nazionale di Fisica Nucleare, Foundation for Fundamental Research on Matter, Holanda, Netherlands Organization for Scientific Research, Council on grants of the President of the Russian Federation, National Authority for Scientific Research, Rumanía, Ministerio de Ciencia e Innovación, Generalitat Valenciana, Agence de l'Oriental, Marruecos, Centre National pour la Recherche Scientifique et Technique, Marruecos, Adrián Martínez, Silvia, Ardid Ramírez, Miguel, Felis-Enguix, Iván, Larosa, Giuseppina, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Albert, A., André, M., Anghinolfi, M., Anton, G., Astraatmadja, T., Aubert, J.-J., Baret, B., Barrios, J., and Basa, S.
Abstract: [EN] Results are presented on a search for neutrino emission from a sample of six microquasars, based on the data collected by the ANTARES neutrino telescope between 2007 and 2010. By means of appropriate time cuts, the neutrino search has been restricted to the periods when the acceleration of relativistic jets was taking place at the microquasars under study. The time cuts have been chosen using the information from the X-ray telescopes RXTE/ASM and Swift/BAT, and, in one case, the gamma-ray telescope Fermi/LAT. No statistically significant excess has been observed, thus upper limits on the neutrino fluences have been derived and compared to the predictions by models. Constraints have been put on the ratio of proton to electron luminosity in the jets.
Published: 2014

40. High-frequency internal wave motions at the ANTARES site in the deep western mediterranean

Author: Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Centre National de la Recherche Scientifique, Francia, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, European Commission, Conseil Régional d'Alsace, Conseil Régional Provence-Alpes-Côte d'Azur, Bundesministerium für Bildung und Forschung, Alemania, Instituto Nazionale di Fisica Nucleare, Foundation for Fundamental Research on Matter, Holanda, Netherlands Organization for Scientific Research, Council on grants of the President of the Russian Federation, National Authority for Scientific Research, Rumanía, Centre National pour la Recherche Scientifique et Technique, Marruecos, Agence de l'Oriental, Marruecos, Ministerio de Ciencia e Innovación, Generalitat Valenciana, Ministerio de Economía y Competitividad, European Regional Development Fund, Département du Var and Ville de La Seyne-sur-Mer, Van Haren, H., Adrián Martínez, Silvia, Al Samarai, I., Albert, A., André, M., Anghinolfi, M., Anton, G., Anton, L., Anvar, S., Ardid Ramírez, Miguel, Astraatmadja, T., Ferri García, Marcelino, Aubert, J-J., Baret, B., Larosa, Giuseppina, Martínez Mora, Juan Antonio, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Centre National de la Recherche Scientifique, Francia, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, European Commission, Conseil Régional d'Alsace, Conseil Régional Provence-Alpes-Côte d'Azur, Bundesministerium für Bildung und Forschung, Alemania, Instituto Nazionale di Fisica Nucleare, Foundation for Fundamental Research on Matter, Holanda, Netherlands Organization for Scientific Research, Council on grants of the President of the Russian Federation, National Authority for Scientific Research, Rumanía, Centre National pour la Recherche Scientifique et Technique, Marruecos, Agence de l'Oriental, Marruecos, Ministerio de Ciencia e Innovación, Generalitat Valenciana, Ministerio de Economía y Competitividad, European Regional Development Fund, Département du Var and Ville de La Seyne-sur-Mer, Van Haren, H., Adrián Martínez, Silvia, Al Samarai, I., Albert, A., André, M., Anghinolfi, M., Anton, G., Anton, L., Anvar, S., Ardid Ramírez, Miguel, Astraatmadja, T., Ferri García, Marcelino, Aubert, J-J., Baret, B., Larosa, Giuseppina, and Martínez Mora, Juan Antonio
Abstract: [EN] High-frequency internal wave motions of periods down to 20 min have been observed in a yearlong record from the deep Western Mediterranean, mainly in vertical currents. The observations were made using the ANTARES neutrino telescope infrastructure. One line of the telescope is instrumented with environmental monitoring devices, and in particular with an Acoustic Doppler Current Profiler that was used to measure currents around 2,200 m. Such high-frequency internal waves are commonly observed much closer to the sea surface where the vertical density stratification is more stable than in the deep sea. In this paper, they are supported by the relatively large stratification following newly formed dense water. During the severe winters of 2005 and 2006, deep dense-water formation occurred in the Ligurian subbasin. Its collapse and spread over the sea floor across the basin remained detectable for at least 3 years as deduced from the present yearlong current record, which is from 2008. The observed high-frequency internal waves match the occasional density stratification observed in ¡«1-m-thin layers using previous shipborne conductivity¿C temperature¿C depth measurements. Such layers and waves are relatively unusual in the deep Mediterranean, where commonly several hundreds-ofmeters- thick near-homogeneous layers dominate. Such thick near-homogeneous layers provide about a half-decade narrow internal wave band around the inertial frequency (f). In contrast, the presently observed vertical currents occasionally show a ¡°small-scale¡± internal wave band that is on average 1.5 decades wide, associated with thin-layer stratification. In spite of its relatively largewidth, this band still shows variance peaking near f rather than near the large-scale buoyancy frequency N (= 2.3 4.5f) and this variance is found to increase with increasing N.
Published: 2014

41. A search for neutrino emission from the Fermi bubbles with ANTARES telescope

Author: Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Conseil Régional d'Alsace, Foundation for Fundamental Research on Matter, Holanda, Conseil Régional Provence-Alpes-Côte d'Azur, Council on grants of the President of the Russian Federation, Executive Agency for Higher Education, Scientific Research, Development and Innovation Funding, Rumanía, Instituto Nazionale di Fisica Nucleare; Ministerio de Ciencia e Innovación, European Regional Development Fund, Agence Nationale de la Recherche, Francia, Netherlands Organization for Scientific Research, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Agence de l'Oriental, Marruecos, Centre National de la Recherche Scientifique, Francia, Bundesministerium für Bildung und Forschung, Alemania, Adrián Martínez, Silvia, Albert, A., Al Samarai, I., André, M., Anton, G., Anvar, S., Ardid Ramírez, Miguel, Astraatmadja, T., Aubert, J.-J., Baret, B., Barrios-Marti, J., Basa, S., Bertin, V., Larosa, Giuseppina, Martínez Mora, Juan Antonio, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Conseil Régional d'Alsace, Foundation for Fundamental Research on Matter, Holanda, Conseil Régional Provence-Alpes-Côte d'Azur, Council on grants of the President of the Russian Federation, Executive Agency for Higher Education, Scientific Research, Development and Innovation Funding, Rumanía, Instituto Nazionale di Fisica Nucleare; Ministerio de Ciencia e Innovación, European Regional Development Fund, Agence Nationale de la Recherche, Francia, Netherlands Organization for Scientific Research, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Agence de l'Oriental, Marruecos, Centre National de la Recherche Scientifique, Francia, Bundesministerium für Bildung und Forschung, Alemania, Adrián Martínez, Silvia, Albert, A., Al Samarai, I., André, M., Anton, G., Anvar, S., Ardid Ramírez, Miguel, Astraatmadja, T., Aubert, J.-J., Baret, B., Barrios-Marti, J., Basa, S., Bertin, V., Larosa, Giuseppina, and Martínez Mora, Juan Antonio
Abstract: Analysis of the Fermi-LAT data has revealed two extended structures above and below the Galactic Centre emitting gamma rays with a hard spectrum, the so-called Fermi bubbles. Hadronic models attempting to explain the origin of the Fermi bubbles predict the emission of high energy neutrinos and gamma rays with similar fluxes. The ANTARES detector, a neutrino telescope located in the Mediterranean Sea, has a good visibility to the Fermi bubble regions. Using data collected from 2008 to 2011 no statistically significant excess of events is observed and therefore upper limits on the neutrino flux in TeV range from the Fermi bubbles are derived for various assumed energy cutoffs of the source.
Published: 2014

42. A search for neutrino emission from the Fermi bubbles with ANTARES telescope

Author: Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Conseil Régional d'Alsace, Foundation for Fundamental Research on Matter, Holanda, Conseil Régional Provence-Alpes-Côte d'Azur, Council on grants of the President of the Russian Federation, Executive Agency for Higher Education, Scientific Research, Development and Innovation Funding, Rumanía, Instituto Nazionale di Fisica Nucleare, European Regional Development Fund, Agence Nationale de la Recherche, Francia, Netherlands Organization for Scientific Research, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Agence de l'Oriental, Marruecos, Centre National de la Recherche Scientifique, Francia, Bundesministerium für Bildung und Forschung, Alemania, Ministerio de Ciencia e Innovación, Generalitat Valenciana, Adrián Martínez, Silvia, Albert, A., Al Samarai, I., André, M., Anton, G., Anvar, S., Ardid Ramírez, Miguel, Astraatmadja, T., Aubert, J.-J., Baret, B., Barrios-Marti, J., Basa, S., Bertin, V., Larosa, Giuseppina, Martínez Mora, Juan Antonio, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Conseil Régional d'Alsace, Foundation for Fundamental Research on Matter, Holanda, Conseil Régional Provence-Alpes-Côte d'Azur, Council on grants of the President of the Russian Federation, Executive Agency for Higher Education, Scientific Research, Development and Innovation Funding, Rumanía, Instituto Nazionale di Fisica Nucleare, European Regional Development Fund, Agence Nationale de la Recherche, Francia, Netherlands Organization for Scientific Research, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Agence de l'Oriental, Marruecos, Centre National de la Recherche Scientifique, Francia, Bundesministerium für Bildung und Forschung, Alemania, Ministerio de Ciencia e Innovación, Generalitat Valenciana, Adrián Martínez, Silvia, Albert, A., Al Samarai, I., André, M., Anton, G., Anvar, S., Ardid Ramírez, Miguel, Astraatmadja, T., Aubert, J.-J., Baret, B., Barrios-Marti, J., Basa, S., Bertin, V., Larosa, Giuseppina, and Martínez Mora, Juan Antonio
Abstract: Analysis of the Fermi-LAT data has revealed two extended structures above and below the Galactic Centre emitting gamma rays with a hard spectrum, the so-called Fermi bubbles. Hadronic models attempting to explain the origin of the Fermi bubbles predict the emission of high energy neutrinos and gamma rays with similar fluxes. The ANTARES detector, a neutrino telescope located in the Mediterranean Sea, has a good visibility to the Fermi bubble regions. Using data collected from 2008 to 2011 no statistically significant excess of events is observed and therefore upper limits on the neutrino flux in TeV range from the Fermi bubbles are derived for various assumed energy cutoffs of the source.
Published: 2014

43. A search for time dependent neutrino emission from microquasars with the ANTARES telescope

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Centre National de la Recherche Scientifique, Francia, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Agence Nationale de la Recherche, Francia, European Commission, European Regional Development Fund, Conseil Régional d'Alsace, Conseil Régional Provence-Alpes-Côte d'Azur, Département du Var and Ville de La Seyne-sur-Mer, Bundesministerium für Bildung und Forschung, Alemania, Instituto Nazionale di Fisica Nucleare, Foundation for Fundamental Research on Matter, Holanda, Netherlands Organization for Scientific Research, Council on grants of the President of the Russian Federation, National Authority for Scientific Research, Rumanía, Ministerio de Ciencia e Innovación, Generalitat Valenciana, Agence de l'Oriental, Marruecos, Centre National pour la Recherche Scientifique et Technique, Marruecos, Adrián Martínez, Silvia, Ardid Ramírez, Miguel, Felis-Enguix, Iván, Larosa, Giuseppina, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Albert, A., André, M., Anghinolfi, M., Anton, G., Astraatmadja, T., Aubert, J.-J., Baret, B., Barrios, J., Basa, S., Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Centre National de la Recherche Scientifique, Francia, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Agence Nationale de la Recherche, Francia, European Commission, European Regional Development Fund, Conseil Régional d'Alsace, Conseil Régional Provence-Alpes-Côte d'Azur, Département du Var and Ville de La Seyne-sur-Mer, Bundesministerium für Bildung und Forschung, Alemania, Instituto Nazionale di Fisica Nucleare, Foundation for Fundamental Research on Matter, Holanda, Netherlands Organization for Scientific Research, Council on grants of the President of the Russian Federation, National Authority for Scientific Research, Rumanía, Ministerio de Ciencia e Innovación, Generalitat Valenciana, Agence de l'Oriental, Marruecos, Centre National pour la Recherche Scientifique et Technique, Marruecos, Adrián Martínez, Silvia, Ardid Ramírez, Miguel, Felis-Enguix, Iván, Larosa, Giuseppina, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Albert, A., André, M., Anghinolfi, M., Anton, G., Astraatmadja, T., Aubert, J.-J., Baret, B., Barrios, J., and Basa, S.
Abstract: [EN] Results are presented on a search for neutrino emission from a sample of six microquasars, based on the data collected by the ANTARES neutrino telescope between 2007 and 2010. By means of appropriate time cuts, the neutrino search has been restricted to the periods when the acceleration of relativistic jets was taking place at the microquasars under study. The time cuts have been chosen using the information from the X-ray telescopes RXTE/ASM and Swift/BAT, and, in one case, the gamma-ray telescope Fermi/LAT. No statistically significant excess has been observed, thus upper limits on the neutrino fluences have been derived and compared to the predictions by models. Constraints have been put on the ratio of proton to electron luminosity in the jets.
Published: 2014

44. High-frequency internal wave motions at the ANTARES site in the deep western mediterranean

Author: Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Centre National de la Recherche Scientifique, Francia, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, European Commission, Conseil Régional d'Alsace, Conseil Régional Provence-Alpes-Côte d'Azur, Bundesministerium für Bildung und Forschung, Alemania, Instituto Nazionale di Fisica Nucleare, Foundation for Fundamental Research on Matter, Holanda, Netherlands Organization for Scientific Research, Council on grants of the President of the Russian Federation, National Authority for Scientific Research, Rumanía, Centre National pour la Recherche Scientifique et Technique, Marruecos, Agence de l'Oriental, Marruecos, Ministerio de Ciencia e Innovación, Generalitat Valenciana, Ministerio de Economía y Competitividad, European Regional Development Fund, Département du Var and Ville de La Seyne-sur-Mer, Van Haren, H., Adrián Martínez, Silvia, Al Samarai, I., Albert, A., André, M., Anghinolfi, M., Anton, G., Anton, L., Anvar, S., Ardid Ramírez, Miguel, Astraatmadja, T., Ferri García, Marcelino, Aubert, J-J., Baret, B., Larosa, Giuseppina, Martínez Mora, Juan Antonio, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Centre National de la Recherche Scientifique, Francia, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, European Commission, Conseil Régional d'Alsace, Conseil Régional Provence-Alpes-Côte d'Azur, Bundesministerium für Bildung und Forschung, Alemania, Instituto Nazionale di Fisica Nucleare, Foundation for Fundamental Research on Matter, Holanda, Netherlands Organization for Scientific Research, Council on grants of the President of the Russian Federation, National Authority for Scientific Research, Rumanía, Centre National pour la Recherche Scientifique et Technique, Marruecos, Agence de l'Oriental, Marruecos, Ministerio de Ciencia e Innovación, Generalitat Valenciana, Ministerio de Economía y Competitividad, European Regional Development Fund, Département du Var and Ville de La Seyne-sur-Mer, Van Haren, H., Adrián Martínez, Silvia, Al Samarai, I., Albert, A., André, M., Anghinolfi, M., Anton, G., Anton, L., Anvar, S., Ardid Ramírez, Miguel, Astraatmadja, T., Ferri García, Marcelino, Aubert, J-J., Baret, B., Larosa, Giuseppina, and Martínez Mora, Juan Antonio
Abstract: [EN] High-frequency internal wave motions of periods down to 20 min have been observed in a yearlong record from the deep Western Mediterranean, mainly in vertical currents. The observations were made using the ANTARES neutrino telescope infrastructure. One line of the telescope is instrumented with environmental monitoring devices, and in particular with an Acoustic Doppler Current Profiler that was used to measure currents around 2,200 m. Such high-frequency internal waves are commonly observed much closer to the sea surface where the vertical density stratification is more stable than in the deep sea. In this paper, they are supported by the relatively large stratification following newly formed dense water. During the severe winters of 2005 and 2006, deep dense-water formation occurred in the Ligurian subbasin. Its collapse and spread over the sea floor across the basin remained detectable for at least 3 years as deduced from the present yearlong current record, which is from 2008. The observed high-frequency internal waves match the occasional density stratification observed in ¡«1-m-thin layers using previous shipborne conductivity¿C temperature¿C depth measurements. Such layers and waves are relatively unusual in the deep Mediterranean, where commonly several hundreds-ofmeters- thick near-homogeneous layers dominate. Such thick near-homogeneous layers provide about a half-decade narrow internal wave band around the inertial frequency (f). In contrast, the presently observed vertical currents occasionally show a ¡°small-scale¡± internal wave band that is on average 1.5 decades wide, associated with thin-layer stratification. In spite of its relatively largewidth, this band still shows variance peaking near f rather than near the large-scale buoyancy frequency N (= 2.3 4.5f) and this variance is found to increase with increasing N.
Published: 2014

45. First search for neutrinos in correlation with gamma-ray bursts with the ANTARES neutrino telescope

Author: Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Conseil Régional d'Alsace, Ministerio de Ciencia e Innovación, Conseil Régional Provence-Alpes-Côte d'Azur, Agence Nationale de la Recherche, Francia, Bundesministerium für Bildung und Forschung, Alemania, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Département du Var and Ville de La Seyne-sur-Mer, Centre National de la Recherche Scientifique, Francia, Council on grants of the President of the Russian Federation, Instituto Nazionale di Fisica Nucleare, Generalitat Valenciana, Agence de l'Oriental, Marruecos, Foundation for Fundamental Research on Matter, Holanda, Netherlands Organization for Scientific Research, European Commission, Executive Agency for Higher Education, Scientific Research, Development and Innovation Funding, Rumanía, Adrián Martínez, Silvia, Al Samarai, Imen, Albert, Andreas, André, Michel, Anghinolfi, Marco, Anton, G., Anvar, Shebli, Ardid Ramírez, Miguel, Assis Jesus, Ana Carolina S, Astraatmadja, T., Aubert, J-J., Bou Cabo, Manuel, Ferri García, Marcelino, Larosa, Giuseppina, Martínez Mora, Juan Antonio, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Conseil Régional d'Alsace, Ministerio de Ciencia e Innovación, Conseil Régional Provence-Alpes-Côte d'Azur, Agence Nationale de la Recherche, Francia, Bundesministerium für Bildung und Forschung, Alemania, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Département du Var and Ville de La Seyne-sur-Mer, Centre National de la Recherche Scientifique, Francia, Council on grants of the President of the Russian Federation, Instituto Nazionale di Fisica Nucleare, Generalitat Valenciana, Agence de l'Oriental, Marruecos, Foundation for Fundamental Research on Matter, Holanda, Netherlands Organization for Scientific Research, European Commission, Executive Agency for Higher Education, Scientific Research, Development and Innovation Funding, Rumanía, Adrián Martínez, Silvia, Al Samarai, Imen, Albert, Andreas, André, Michel, Anghinolfi, Marco, Anton, G., Anvar, Shebli, Ardid Ramírez, Miguel, Assis Jesus, Ana Carolina S, Astraatmadja, T., Aubert, J-J., Bou Cabo, Manuel, Ferri García, Marcelino, Larosa, Giuseppina, and Martínez Mora, Juan Antonio
Abstract: A search for neutrino-induced muons in correlation with a selection of 40 gamma-ray bursts that occurred in 2007 has been performed with the ANTARES neutrino telescope. During that period, the detector consisted of 5 detection lines. The ANTARES neutrino telescope is sensitive to TeV-PeV neutrinos that are predicted from gamma-ray bursts. No events were found in correlation with the prompt photon emission of the gamma-ray bursts and upper limits have been placed on the flux and fluence of neutrinos for di fferent models.
Published: 2013

46. Search for neutrino emission from gamma-ray flaring blazars with the ANTARES telescope

Author: Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Conseil Régional d'Alsace, Instituto Nazionale di Fisica Nucleare, Conseil Régional Provence-Alpes-Côte d'Azur, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Council on grants of the President of the Russian Federation, National Authority for Scientific Research, Rumanía, Netherlands Organization for Scientific Research, Agence Nationale de la Recherche, Francia, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, Ministerio de Ciencia e Innovación, Département du Var and Ville de La Seyne-sur-Mer, Foundation for Fundamental Research on Matter, Holanda, European Regional Development Fund, Adrián Martínez, Silvia, Al Samarai, I, Albert, A., André, M, Anghinolfi, M, Anton, G, Anvar, S, Ardid Ramírez, Miguel, Astraatmadja, T., Aubert, J-J, Bou Cabo, Manuel, Camarena Femenia, Francisco, Ferri García, Marcelino, Larosa, Giuseppina, Martínez Mora, Juan Antonio, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Conseil Régional d'Alsace, Instituto Nazionale di Fisica Nucleare, Conseil Régional Provence-Alpes-Côte d'Azur, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Council on grants of the President of the Russian Federation, National Authority for Scientific Research, Rumanía, Netherlands Organization for Scientific Research, Agence Nationale de la Recherche, Francia, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, Ministerio de Ciencia e Innovación, Département du Var and Ville de La Seyne-sur-Mer, Foundation for Fundamental Research on Matter, Holanda, European Regional Development Fund, Adrián Martínez, Silvia, Al Samarai, I, Albert, A., André, M, Anghinolfi, M, Anton, G, Anvar, S, Ardid Ramírez, Miguel, Astraatmadja, T., Aubert, J-J, Bou Cabo, Manuel, Camarena Femenia, Francisco, Ferri García, Marcelino, Larosa, Giuseppina, and Martínez Mora, Juan Antonio
Abstract: The ANTARES telescope is well-suited to detect neutrinos produced in astrophysical transient sources as it can observe a full hemisphere of the sky at all times with a high duty cycle. Radio-loud active galactic nuclei with jets pointing almost directly towards the observer, the so-called blazars, are particularly attractive potential neutrino point sources. The all-sky monitor LAT on board the Fermi satellite probes the variability of any given gamma-ray bright blazar in the sky on time scales of hours to months. Assuming hadronic models, a strong correlation between the gamma-ray and the neutrino fluxes is expected. Selecting a narrow time window on the assumed neutrino production period can significantly reduce the background. An unbinned method based on the minimization of a likelihood ratio was applied to a subsample of data collected in 2008 (61 days live time). By searching for neutrinos during the high state periods of the AGN light curve, the sensitivity to these sources was improved by about a factor of two with respect to a standard time-integrated point source search. First results on the search for neutrinos associated with ten bright and variable Fermi sources are presented.
Published: 2012

47. Search for neutrino emission from gamma-ray flaring blazars with the ANTARES telescope

Author: Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Conseil Régional d'Alsace, Instituto Nazionale di Fisica Nucleare, Conseil Régional Provence-Alpes-Côte d'Azur, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Council on grants of the President of the Russian Federation, National Authority for Scientific Research, Rumanía, Netherlands Organization for Scientific Research, Agence Nationale de la Recherche, Francia, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, Ministerio de Ciencia e Innovación, Département du Var and Ville de La Seyne-sur-Mer, Foundation for Fundamental Research on Matter, Holanda, European Regional Development Fund, Generalitat Valenciana, Adrián Martínez, Silvia, Al Samarai, I, Albert, A., André, M, Anghinolfi, M, Anton, G, Anvar, S, Ardid Ramírez, Miguel, Astraatmadja, T., Aubert, J-J, Bou Cabo, Manuel, Camarena Femenia, Francisco, Ferri García, Marcelino, Larosa, Giuseppina, Martínez Mora, Juan Antonio, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Conseil Régional d'Alsace, Instituto Nazionale di Fisica Nucleare, Conseil Régional Provence-Alpes-Côte d'Azur, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Council on grants of the President of the Russian Federation, National Authority for Scientific Research, Rumanía, Netherlands Organization for Scientific Research, Agence Nationale de la Recherche, Francia, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, Ministerio de Ciencia e Innovación, Département du Var and Ville de La Seyne-sur-Mer, Foundation for Fundamental Research on Matter, Holanda, European Regional Development Fund, Generalitat Valenciana, Adrián Martínez, Silvia, Al Samarai, I, Albert, A., André, M, Anghinolfi, M, Anton, G, Anvar, S, Ardid Ramírez, Miguel, Astraatmadja, T., Aubert, J-J, Bou Cabo, Manuel, Camarena Femenia, Francisco, Ferri García, Marcelino, Larosa, Giuseppina, and Martínez Mora, Juan Antonio
Abstract: The ANTARES telescope is well-suited to detect neutrinos produced in astrophysical transient sources as it can observe a full hemisphere of the sky at all times with a high duty cycle. Radio-loud active galactic nuclei with jets pointing almost directly towards the observer, the so-called blazars, are particularly attractive potential neutrino point sources. The all-sky monitor LAT on board the Fermi satellite probes the variability of any given gamma-ray bright blazar in the sky on time scales of hours to months. Assuming hadronic models, a strong correlation between the gamma-ray and the neutrino fluxes is expected. Selecting a narrow time window on the assumed neutrino production period can significantly reduce the background. An unbinned method based on the minimization of a likelihood ratio was applied to a subsample of data collected in 2008 (61 days live time). By searching for neutrinos during the high state periods of the AGN light curve, the sensitivity to these sources was improved by about a factor of two with respect to a standard time-integrated point source search. First results on the search for neutrinos associated with ten bright and variable Fermi sources are presented.
Published: 2012

48. Measurement of atmospheric neutrino oscillations with the ANTARES neutrino telescope

Author: Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Conseil Régional Provence-Alpes-Côte d'Azur, Ministerio de Ciencia e Innovación, Conseil Régional d'Alsace, Centre National pour la Recherche Scientifique et Technique, Marruecos, Netherlands Organization for Scientific Research, Executive Agency for Higher Education, Scientific Research, Development and Innovation Funding, Rumanía, Council on grants of the President of the Russian Federation, Département du Var and Ville de La Seyne-sur-Mer, European Commission, Centre National de la Recherche Scientifique, Francia, Bundesministerium für Bildung und Forschung, Alemania, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Foundation for Fundamental Research on Matter, Holanda, Instituto Nazionale di Fisica Nucleare, Agence de l'Oriental, Marruecos, Generalitat Valenciana, Adrián Martínez, Silvia, Al Samarai, I., Albert, A., Andre, M., Anghinolfi, M., Anton, G., Anvar, S., Ardid Ramírez, Miguel, Astraatmadja, T., Aubert, J. -J., Baret, B., Bou Cabo, Manuel, Ferri García, Marcelino, Larosa, Giuseppina, Martínez Mora, Juan Antonio, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Conseil Régional Provence-Alpes-Côte d'Azur, Ministerio de Ciencia e Innovación, Conseil Régional d'Alsace, Centre National pour la Recherche Scientifique et Technique, Marruecos, Netherlands Organization for Scientific Research, Executive Agency for Higher Education, Scientific Research, Development and Innovation Funding, Rumanía, Council on grants of the President of the Russian Federation, Département du Var and Ville de La Seyne-sur-Mer, European Commission, Centre National de la Recherche Scientifique, Francia, Bundesministerium für Bildung und Forschung, Alemania, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Foundation for Fundamental Research on Matter, Holanda, Instituto Nazionale di Fisica Nucleare, Agence de l'Oriental, Marruecos, Generalitat Valenciana, Adrián Martínez, Silvia, Al Samarai, I., Albert, A., Andre, M., Anghinolfi, M., Anton, G., Anvar, S., Ardid Ramírez, Miguel, Astraatmadja, T., Aubert, J. -J., Baret, B., Bou Cabo, Manuel, Ferri García, Marcelino, Larosa, Giuseppina, and Martínez Mora, Juan Antonio
Abstract: The data taken with the ANTARES neutrino telescope from 2007 to 2010, a total live time of 863 days, are used to measure the oscillation parameters of atmospheric neutrinos. Muon tracks are reconstructed with energies as low as 20 GeV. Neutrino oscillations will cause a suppression of vertical upgoing muon neutrinos of such energies crossing the Earth. The parameters determining the oscillation of atmospheric neutrinos are extracted by fitting the event rate as a function of the ratio of the estimated neutrino energy and reconstructed flight path through the Earth. Measurement contours of the oscillation parameters in a two-flavour approximation are derived. Assuming maximal mixing, a mass difference of Delta m(32)(2) = (3.1 +/- 0.9) . 10(-3) eV(2) is obtained, in good agreement with the world average value. (C) 2012 Elsevier B.V. All rights reserved.
Published: 2012

49. AMADEUS - The acoustic neutrino detection test system of the ANTARES deep-sea neutrino telescope

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Conseil Régional d'Alsace, Ministerio de Ciencia e Innovación, Conseil Régional Provence-Alpes-Côte d'Azur, Agence Nationale de la Recherche, Francia, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, Foundation for Fundamental Research on Matter, Holanda, National Authority for Scientific Research, Rumanía, Département du Var and Ville de La Seyne-sur-Mer, Generalitat Valenciana, Council on grants of the President of the Russian Federation, Instituto Nazionale di Fisica Nucleare, European Commission, Netherlands Organization for Scientific Research, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Aguilar, J. A., Al Samarai, I., Albert, A., Anghinolfi, M., Anton, G., Anvar, S., Ardid Ramírez, Miguel, Jesus, A. C. Assis, Astraatmadja, T., Aubert, J. -J., Auer, R., Bou Cabo, Manuel, Camarena Femenia, Francisco, Larosa, Giuseppina, Martínez Mora, Juan Antonio, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Conseil Régional d'Alsace, Ministerio de Ciencia e Innovación, Conseil Régional Provence-Alpes-Côte d'Azur, Agence Nationale de la Recherche, Francia, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, Foundation for Fundamental Research on Matter, Holanda, National Authority for Scientific Research, Rumanía, Département du Var and Ville de La Seyne-sur-Mer, Generalitat Valenciana, Council on grants of the President of the Russian Federation, Instituto Nazionale di Fisica Nucleare, European Commission, Netherlands Organization for Scientific Research, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Aguilar, J. A., Al Samarai, I., Albert, A., Anghinolfi, M., Anton, G., Anvar, S., Ardid Ramírez, Miguel, Jesus, A. C. Assis, Astraatmadja, T., Aubert, J. -J., Auer, R., Bou Cabo, Manuel, Camarena Femenia, Francisco, Larosa, Giuseppina, and Martínez Mora, Juan Antonio
Abstract: The AMADEUS (ANTARES Modules for the Acoustic Detection Under the Sea) system which is described in this article aims at the investigation of techniques for acoustic detection of neutrinos in the deep sea. It is integrated into the ANTARES neutrino telescope in the Mediterranean Sea. Its acoustic sensors, installed at water depths between 2050 and 2300 m, employ piezo-electric elements for the broad-band recording of signals with frequencies ranging up to 125 kHz. The typical sensitivity of the sensors is around - 145 dB re 1 V/mu Pa (including preamplifier). Completed in May 2008, AMADEUS consists of six "acoustic clusters", each comprising six acoustic sensors that are arranged at distances of roughly 1 m from each other. Two vertical mechanical structures (so-called lines) of the ANTARES detector host three acoustic clusters each. Spacings between the clusters range from 14.5 to 340 m. Each cluster contains custom-designed electronics boards to amplify and digitise the acoustic signals from the sensors. An on-shore computer cluster is used to process and filter the data stream and store the selected events. The daily volume of recorded data is about 10 GB. The system is operating continuously and automatically, requiring only little human intervention. AMADEUS allows for extensive studies of both transient signals and ambient noise in the deep sea, as well as signal correlations on several length scales and localisation of acoustic point sources. Thus the system is excellently suited to assess the background conditions for the measurement of the bipolar pulses expected to originate from neutrino interactions. (C) 2010 Elsevier B.V. All rights reserved.
Published: 2011

50. Search for a diffuse flux of high-energy neutrino mu with the ANTARES neutrino telescope

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Centre National de la Recherche Scientifique, Francia, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Agence Nationale de la Recherche, Francia, European Commission, European Regional Development Fund, Conseil Régional d'Alsace, Conseil Régional Provence-Alpes-Côte d'Azur, Département du Var and Ville de La Seyne-sur-Mer, Bundesministerium für Bildung und Forschung, Alemania, Instituto Nazionale di Fisica Nucleare, Foundation for Fundamental Research on Matter, Holanda, Netherlands Organization for Scientific Research, Council on grants of the President of the Russian Federation, National Authority for Scientific Research, Rumanía, Ministerio de Ciencia e Innovación, Generalitat Valenciana, Aguilar, J. A., Al Samarai, I., Albert, A., André, M., Anghinolfi, M., Anton, G., Anvar, S., Ardid Ramírez, Miguel, Assis Jesus, A.C., Astraatmadja, T., Aubert, J-J., Bou Cabo, Manuel, Camarena Femenia, Francisco, Larosa, Giuseppina, Martínez Mora, Juan Antonio, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Centre National de la Recherche Scientifique, Francia, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Agence Nationale de la Recherche, Francia, European Commission, European Regional Development Fund, Conseil Régional d'Alsace, Conseil Régional Provence-Alpes-Côte d'Azur, Département du Var and Ville de La Seyne-sur-Mer, Bundesministerium für Bildung und Forschung, Alemania, Instituto Nazionale di Fisica Nucleare, Foundation for Fundamental Research on Matter, Holanda, Netherlands Organization for Scientific Research, Council on grants of the President of the Russian Federation, National Authority for Scientific Research, Rumanía, Ministerio de Ciencia e Innovación, Generalitat Valenciana, Aguilar, J. A., Al Samarai, I., Albert, A., André, M., Anghinolfi, M., Anton, G., Anvar, S., Ardid Ramírez, Miguel, Assis Jesus, A.C., Astraatmadja, T., Aubert, J-J., Bou Cabo, Manuel, Camarena Femenia, Francisco, Larosa, Giuseppina, and Martínez Mora, Juan Antonio
Abstract: [EN] A search for a diffuse flux of astrophysical muon neutrinos, using data collected by the ANTARES neutrino telescope is presented. A (0.83×2¿) sr sky was monitored for a total of 334 days of equivalent live time. The searched signal corresponds to an excess of events, produced by astrophysical sources, over the expected atmospheric neutrino background. The observed number of events is found compatible with the background expectation. Assuming an E -2 flux spectrum, a 90% c.l. upper limit on the diffuse ¿ ¿ flux of E 2¿90%=5.3×10 -8 GeVcm -2s -1sr -11 in the energy range 20 TeV-2.5 PeV is obtained. Other signal models with different energy spectra are also tested and some rejected. © 2010 Elsevier B.V.
Published: 2011

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