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38 results on '"Falcke H."'

1. Using pulse-shape information for reconstructing cosmic-ray air showers and validating antenna responses with LOFAR and SKA

Author

Karastathis, Nikolaos, primary, Buitink, S., additional, Corstanje, A., additional, Desmet, M., additional, Falcke, H., additional, Hare, B. M., additional, Hörandel, J. R., additional, Huege, T., additional, Jhansi, V. B., additional, Krampah, G., additional, Mitra, P., additional, Mulrey, K., additional, Neijzen, B., additional, Nelles, A., additional, Pandya, H., additional, Scholten, O., additional, Terveer, K., additional, Thoudam, S., additional, Trinh, G., additional, and ter Veen, S., additional

Published
2023
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2. Constraining the cosmic-ray mass composition by measuring the shower length with SKA

Author

Buitink, Stijn, primary, Corstanje,, A., additional, Bhavani,, J., additional, Desmet,, M., additional, Falcke,, H., additional, Hare,, B.M., additional, Hörandel,, J.R., additional, Huege,, T., additional, Karasthatis,, N., additional, Mitra,, P., additional, Mulrey,, K., additional, Nelles,, A., additional, Nivedita,, K., additional, Pandya,, H., additional, Scholten,, O., additional, Thoudam,, S., additional, and Trinh,, G., additional

Published
2023
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3. The NuMoon experiment: Preliminary results and upper limits on UHE particles

Author

Krampah, Godwin Komla, primary, Buitink, S., additional, Bhavani, J., additional, Desmet, M., additional, Corstanje, A., additional, Falcke, H., additional, Hare, B. M., additional, Hörandel, J. R., additional, Huege, T., additional, Karasthatis, N., additional, Mulrey, K., additional, Mitra, P., additional, Nelles, A., additional, Nivedita, K., additional, Pandya, H., additional, Rachen, J. P., additional, Scholten, O., additional, ter Veen, S., additional, Thoudam, S., additional, Trin, T. N. G., additional, and Winchen, T., additional

Published
2023
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4. Cross-calibrating the energy scales of cosmic-ray experiments using a portable radio array

Author

Mulrey, Katharine, primary, Buitink, S., additional, Corstanje, A., additional, de Vries, K. D, additional, Falcke, H., additional, Hare, B. M, additional, Hörandel, J. R, additional, Huege, T., additional, Krampah, G. K, additional, Mitra, P., additional, Nelles, A., additional, Pandya, H., additional, Rachen, J. P, additional, Santiago, E., additional, Scholten, O., additional, Stanley, R., additional, ter Veen, S, additional, Thoudam, S., additional, Trinh, T. N G, additional, and Winchen, T., additional

Published
2021
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6. Towards an improved mass composition analysis with LOFAR

Author

Buitink, Stijn, primary, Corstanje, A., additional, Bonardi, A., additional, Falcke, H., additional, Hare, B.M, additional, Hörandel, J. R, additional, Huege, T., additional, Krampah, G., additional, Mitra, P., additional, Nelles, A., additional, Pandya, Hershal, additional, Rachen, J. P, additional, Rossetto, L., additional, Scholten, O., additional, ter Veen, S, additional, Trinh, T. N G, additional, and Winchen, T., additional

Published
2019
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7. Reconstructing air showers with LOFAR using event specific GDAS atmospheres

Author

Mitra, Pragati, primary, Bonardi, A., additional, Corstanje, A., additional, Buitink, S., additional, Krampah, G. K, additional, Falcke, H., additional, Hare, B. M, additional, Hörandel, J. R, additional, Huege, T., additional, Mulrey, K., additional, Nelles, A, additional, Pandya, H, additional, Rachen, J.P, additional, Rossetto, L., additional, Scholten, O., additional, ter Veen, S, additional, Trinh, T.N G, additional, and Winchen, T., additional

Published
2019
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10. BlackHoleCam: Fundamental physics of the galactic center

Author

Goddi, C., primary, Falcke, H., additional, Kramer, M., additional, Rezzolla, L., additional, Brinkerink, C., additional, Bronzwaer, T., additional, Davelaar, J. R. J., additional, Deane, R., additional, De Laurentis, M., additional, Desvignes, G., additional, Eatough, R. P., additional, Eisenhauer, F., additional, Fraga-Encinas, R., additional, Fromm, C. M., additional, Gillessen, S., additional, Grenzebach, A., additional, Issaoun, S., additional, Janßen, M., additional, Konoplya, R., additional, Krichbaum, T. P., additional, Laing, R., additional, Liu, K., additional, Lu, R.-S., additional, Mizuno, Y., additional, Moscibrodzka, M., additional, Müller, C., additional, Olivares, H., additional, Pfuhl, O., additional, Porth, O., additional, Roelofs, F., additional, Ros, E., additional, Schuster, K., additional, Tilanus, R., additional, Torne, P., additional, Bemmel, I. van, additional, Langevelde, H. J. van, additional, Wex, N., additional, Younsi, Z., additional, and Zhidenko, A., additional

Published
2017
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11. Cosmic ray mass composition with LOFAR

Author

Buitink, Stijn, primary, Bonardi, A., additional, Corstanje, A., additional, Falcke, H., additional, Hare, B.M., additional, Hörandel, J.R., additional, Mitra, P., additional, Mulrey, K., additional, Nelles, A., additional, Rachen, Jörg Paul, additional, Rossetto, L., additional, Schellart, P., additional, Scholten, O., additional, ter Veen, S., additional, Thoudam, S., additional, Trinh, T.N.G., additional, and Winchen, T., additional

Published
2017
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12. Measuring the expansion velocity of the outflows of LS I +61 303 through low-frequency radio observations

Author

Marcote, B., primary, Ribó, M., additional, Paredes, J. M., additional, Ishwara-Chandra, C. H., additional, Swinbank, J. D., additional, Broderick, J. W., additional, Markoff, S., additional, Fender, R., additional, Wijers, R. A. M. J., additional, Pooley, G. G., additional, Stewart, A. J., additional, Bell, M. E., additional, Breton, R. P., additional, Carbone, D., additional, Corbel, S., additional, Eislöffel, J., additional, Falcke, H., additional, Grießmeier, J.-M., additional, Kuniyoshi, M., additional, Pietka, M., additional, Rowlinson, A., additional, Serylak, M., additional, van der Horst, A. J., additional, van Leeuwen, J., additional, Wise, M. W., additional, and Zarka, P., additional

Published
2017
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13. Properties of the Lunar Detection Mode for ZeV-Scale Particles with LOFAR.

Author

Riccobene, G., Biagi, S., Capone, A., Distefano, C., Piattelli, P., Winchen, T., Bonardi, A., Buitink, S., Corstanje, A., Falcke, H., Hare, B. M., Hörandel, A., Mitra, P., Mulrey, K., Nelles, A., Rachen, J.P., Rossetto, L., Schellart, P., Scholten, O., and ter Veen, S.

Subjects
ULTRA-high energy cosmic rays, RADIO telescopes, PARTICLE detectors, LUNAR petrology, RADIO astronomy
Abstract

The steep decrease of the flux of ultra-high energy cosmic rays (UHECR) provides a challenge to answer the long standing question about their origin and nature. A significant increase in detector volume may be achieved byemploying Earth's moon as a detector that is read out using existing Earth-bound radio telescopes by searching for the radio pulses emitted by the particle shower in the lunar rock. In this contribution we will report on the properties of a corresponding detection mode currently under development for the LOFAR Radio telescope. [ABSTRACT FROM AUTHOR]

Published
2019
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14. Updated Calibration of the LOFAR Low-Band Antennas.

Author

Riccobene, G., Biagi, S., Capone, A., Distefano, C., Piattelli, P., Mulrey, K., Bonardi, A., Buitink, S., Corstanje, A., Falcke, H., Hare, B.M., Hörandel, J., Mitra, P., Nelles, A., Rachen, J.P., Rossetto, L., Schellart, P., Scholten, O., ter Veen, S., and Thoudam, S.

Subjects
RADIO telescopes, CALIBRATION, COSMIC ray showers, PARTICLE detectors, RADIO antennas
Abstract

The LOw-Frequency ARray (LOFAR) telescope measures radio emission from air showers. In order to interpret the data, an absolute, frequency dependent calibration is required. Due to a growing need for a better understanding of the measured frequency spectrum, we revisit the calibration of the LOFAR antennas in the range of 30—80 MHz. Using the galactic radio emission and a detailed model of the LOFAR signal chain, we find a calibration that provides an absolute energy scale and allows us to study frequency dependent features in measured air shower signals. [ABSTRACT FROM AUTHOR]

Published
2019
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15. A new parametrization for the radio emission of air showers applied to LOFAR data.

Author

Riccobene, G., Biagi, S., Capone, A., Distefano, C., Piattelli, P., Plaisier, I., Bonardi, A., Buitink, S., Corstanje, A., Falcke, H., Hare, B.M., Hörandel, J.R., de Jong, S., Mitra, P., Mulrey, K., Nelles, A., Rachen, J., Rossetto, L., Schellart, P., and Scholten, O.

Subjects
COSMIC ray showers, RADIO waves, ENERGY density, RADIO telescopes, GAUSSIAN distribution
Abstract

The energy and mass composition of cosmic rays influence how the energy density of the radio emission of air showers is distributed on the ground. A precise description of the radio profiles can, therefore, be used to reconstruct the properties of the primary cosmic rays. Here, such a description is presented, using a separate treatment of the two radio-emission mechanisms, the geomagnetic effect and the charge excess effect. The model is parametrized as a function that depends only on the shower parameters, allowing for a precise reconstruction of the properties of the primary cosmic rays. This model is applied to cosmic-ray events measured with LOFAR and it is capable of reconstructing the properties of air showers correctly. [ABSTRACT FROM AUTHOR]

Published
2019
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16. The mass composition of cosmic rays measured with LOFAR.

Author

Hörandel, Jörg R., Bonardi, A., Buitink, S., Corstanje, A., Falcke, H., Mitra, P., Mulrey, K., Nelles, A., Rachen, J. P., Rossetto, L., Schellart, P., Scholten, O., ter Veen, S., Thoudam, S., Trinh, T. N. G., and Winchen, T.

Subjects
COSMIC rays, ELECTROMAGNETIC radiation, RADIO telescopes, ASTROPHYSICAL radiation, ATMOSPHERE, PARTICLE physics
Abstract

High-energy cosmic rays, impinging on the atmosphere of the Earth initiate cascades of secondary particles, the extensive air showers. The electrons and positrons in the air shower emit electromagnetic radiation. This emission is detected with the LOFAR radio telescope in the frequency range from 30 to 240 MHz. The data are used to determine the properties of the incoming cosmic rays. The radio technique is now routinely used to measure the arrival direction, the energy, and the particle type (atomic mass) of cosmic rays in the energy range from 1017 to 1018 eV. This energy region is of particular astrophysical interest, since in this regime a transition from a Galactic to an extra-galactic origin of cosmic rays is expected. For illustration, the LOFAR results are used to set constraints on models to describe the origin of high-energy cosmic rays. [ABSTRACT FROM AUTHOR]

Published
2017
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17. Search for Cosmic Particles with the Moon and LOFAR.

Author

Winchen, T., Bonardi, A., Buitink, S., Corstanje, A., Enriquez, J. E., Falcke, H., Hörande, J. R., Mitra, P., Mulrey, K., Nelles, A., Rachen, J. P., Schellart, P., Scholten, O., Thoudam, S., Trinh, T. N. G., and ter Veen, S.

Subjects
FLUX (Energy), COSMIC rays, RADIO detectors, NEUTRINOS, DARK matter
Abstract

The low flux of the ultra-high energy cosmic rays (UHECR) at the highest energies provides a challenge to answer the long standing question about their origin and nature. A significant increase in the number of detected UHECR is expected to be achieved by employing Earth's moon as detector, and search for short radio pulses that are emitted when a particle interacts in the lunar rock. Observation of these short pulses with current and future radio telescopes also allows to search for the even lower fluxes of neutrinos with energies above 1022 eV, that are predicted in certain Grand-Unifying-Theories (GUTs), and e.g. models for super-heavy dark matter (SHDM). In this contribution we present the initial design for such a search with the LOFAR radio telescope. [ABSTRACT FROM AUTHOR]

Published
2017
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18. Circular polarization of radio emission from air showers in thunderstorm conditions.

Author

Trinh, T. N. G., Scholten, O., Bonardi, A., Buitink, S., Corstanje, A., Ebert, U., Enriquez, J. E., Falcke, H., Hörande, J.R., Mitra, P., Mulrey, K., Nelles, A., Thoudam, S., Rachen, J.P., Rossetto, L., Rutjes, C., Schellart, P., ter Veen, S., and Winchen, T.

Subjects
RADIO frequency, COSMIC ray showers, THUNDERSTORMS, LINEAR polarization, CIRCULAR polarization, ATMOSPHERE
Abstract

We present measured radio emission from cosmic-ray-induced air showers under thunderstorm conditions. We observe for these events large differences in intensity, linear polarization and circular polarization from the events measured under fair-weather conditions. This can be explained by the effects of atmospheric electric fields in thunderclouds. Therefore, measuring the intensity and polarization of radio emission from cosmic ray extensive air showers during thunderstorm conditions provides a new tool to probe the atmospheric electric fields present in thunderclouds. [ABSTRACT FROM AUTHOR]

Published
2017
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19. Commensal searches for extraterrestrial intelligence with Arecibo Observatory and the Green Bank Telescope

Author

Siemion, A. P. V., primary, Armour, W., additional, Chennamangalam, J., additional, Cobb, J., additional, Dexter, M., additional, Falcke, H., additional, Ford, J., additional, Garrett, M., additional, Jones, G., additional, Karastergiou, A., additional, Korpela, E., additional, Lebofsky, M., additional, Lorimer, D., additional, MacMahon, D., additional, Maddalena, R., additional, McLaughlin, M., additional, and Werthimer, D., additional

Published
2014
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20. LOPES-3D - vectorial measurements of radio emission from cosmic ray induced air showers

Author

Huber, D., primary, Apel, W. D., additional, Arteaga-Velázquez, J. C., additional, Bähren, L., additional, Bekk, K., additional, Bertaina, M., additional, Biermann, P. L., additional, Blümer, J., additional, Bozdog, H., additional, Brancus, I. M., additional, Chiavassa, A., additional, Daumiller, K., additional, de Souza, V., additional, Di Pierro, F., additional, Doll, P., additional, Engel, R., additional, Falcke, H., additional, Fuchs, B., additional, Fuhrmann, D., additional, Gemmeke, H., additional, Grupen, C., additional, Haungs, A., additional, Heck, D., additional, Hörandel, J. R., additional, Horneffer, A., additional, Huege, T., additional, Isar, P. G., additional, Kampert, K.-H., additional, Kang, D., additional, Krömer, O., additional, Kuijpers, J., additional, Link, K., additional, Łuczak, P., additional, Ludwig, M., additional, Mathes, H. J., additional, Melissas, M., additional, Morello, C., additional, Oehlschläger, J., additional, Palmieri, N., additional, Pierog, T., additional, Rautenberg, J., additional, Rebel, H., additional, Roth, M., additional, Rühle, C., additional, Saftoiu, A., additional, Schieler, H., additional, Schmidt, A., additional, Schröder, F. G., additional, Sima, O., additional, Toma, G., additional, Trinchero, G. C., additional, Weindl, A., additional, Wochele, J., additional, Zabierowski, J., additional, and Zensus, J. A., additional

Published
2013
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21. Comparison of LOPES measurements with CoREAS and REAS 3.11 simulations

Author

Ludwig, M., primary, Apel, W. D., additional, Arteaga-Velázquez, J. C., additional, Bähren, L., additional, Bekk, K., additional, Bertaina, M., additional, Biermann, P. L., additional, Blümer, J., additional, Bozdog, H., additional, Brancus, I. M., additional, Chiavassa, A., additional, Daumiller, K., additional, de Souza, V., additional, Di Pierro, F., additional, Doll, P., additional, Engel, R., additional, Falcke, H., additional, Fuchs, B., additional, Fuhrmann, D., additional, Gemmeke, H., additional, Grupen, C., additional, Haug, M., additional, Haungs, A., additional, Heck, D., additional, Hörandel, J. R., additional, Horneffer, A., additional, Huber, D., additional, Huege, T., additional, Isar, P. G., additional, Kampert, K.-H., additional, Kang, D., additional, Krömer, O., additional, Kuijpers, J., additional, Link, K., additional, Łuczak, P., additional, Mathes, H. J., additional, Melissas, M., additional, Morello, C., additional, Oehlschläger, J., additional, Palmieri, N., additional, Pierog, T., additional, Rautenberg, J., additional, Rebel, H., additional, Roth, M., additional, Rühle, C., additional, Saftoiu, A., additional, Schieler, H., additional, Schmidt, A., additional, Schröder, F. G., additional, Sima, O., additional, Toma, G., additional, Trinchero, G. C., additional, Weindl, A., additional, Wochele, J., additional, Zabierowski, J., additional, and Zensus, J. A., additional

Published
2013
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22. Cosmic ray measurements with LOPES: Status and recent results

Author

Schröder, F. G., primary, Apel, W. D., additional, Arteaga-Velázquez, J. C., additional, Bähren, L., additional, Bekk, K., additional, Bertaina, M., additional, Biermann, P. L., additional, Blümer, J., additional, Bozdog, H., additional, Brancus, I. M., additional, Chiavassa, A., additional, Daumiller, K., additional, de Souza, V., additional, Di Pierro, F., additional, Doll, P., additional, Engel, R., additional, Falcke, H., additional, Fuchs, B., additional, Fuhrmann, D., additional, Gemmeke, H., additional, Grupen, C., additional, Haungs, A., additional, Heck, D., additional, Hörandel, J. R., additional, Horneffer, A., additional, Huber, D., additional, Huege, T., additional, Isar, P. G., additional, Kampert, K.-H., additional, Kang, D., additional, Krömer, O., additional, Kuijpers, J., additional, Link, K., additional, Łuczak, P., additional, Ludwig, M., additional, Mathes, H. J., additional, Melissas, M., additional, Morello, C., additional, Oehlschläger, J., additional, Palmieri, N., additional, Pierog, T., additional, Rautenberg, J., additional, Rebel, H., additional, Roth, M., additional, Rühle, C., additional, Saftoiu, A., additional, Schieler, H., additional, Schmidt, A., additional, Sima, O., additional, Toma, G., additional, Trinchero, G. C., additional, Weindl, A., additional, Wochele, J., additional, Zabierowski, J., additional, and Zensus, J. A., additional

Published
2013
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23. Reconstructing energy and Xmax of cosmic ray air showers using the radio lateral distribution measured with LOPES

Author

Palmieri, N., primary, Apel, W. D., additional, Arteaga-Velázquez, J. C., additional, Bähren, L., additional, Bekk, K., additional, Bertaina, M., additional, Biermann, P. L., additional, Blümer, J., additional, Bozdog, H., additional, Brancus, I. M., additional, Chiavassa, A., additional, Daumiller, K., additional, de Souza, V., additional, Di Pierro, F., additional, Doll, P., additional, Engel, R., additional, Falcke, H., additional, Fuchs, B., additional, Fuhrmann, D., additional, Gemmeke, H., additional, Grupen, C., additional, Haungs, A., additional, Heck, D., additional, Hörandel, J. R., additional, Horneffer, A., additional, Huber, D., additional, Huege, T., additional, Isar, P. G., additional, Kampert, K.-H., additional, Kang, D., additional, Krömer, O., additional, Kuijpers, J., additional, Link, K., additional, Łuczak, P., additional, Ludwig, M., additional, Mathes, H. J., additional, Melissas, M., additional, Morello, C., additional, Oehlschläger, J., additional, Pierog, T., additional, Rautenberg, J., additional, Rebel, H., additional, Roth, M., additional, Rühle, C., additional, Saftoiu, A., additional, Schieler, H., additional, Schmidt, A., additional, Schröder, F. G., additional, Sima, O., additional, Toma, G., additional, Trinchero, G. C., additional, Weindl, A., additional, Wochele, J., additional, Zabierowski, J., additional, and Zensus, J. A., additional

Published
2013
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24. FRATs: a search for Fast Radio Transients with LOFAR

Author

ter Veen, S., primary, Falcke, H., additional, Fender, R., additional, Hörandel, J. R., additional, James, C. W., additional, Rawlings, S., additional, Schellart, P., additional, Stappers, B., additional, Wijers, R., additional, Wise, M., additional, Zarka, P., additional, Burgay, Marta, additional, D’Amico, Nicolò, additional, Esposito, Paolo, additional, Pellizzoni, Alberto, additional, and Possenti, Andrea, additional

Published
2011
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25. SEARCH FOR RADIO BURSTS FROM UHE NEUTRINOS

Author

STROM, R. G., primary, SCHOLTEN, O., additional, SINGH, K., additional, YAHYAOUI, R. AL, additional, BUITINK, S., additional, FALCKE, H., additional, BACELAR, J., additional, BRAUN, R., additional, DE BRUYN, A. G., additional, and STAPPERS, B., additional

Published
2010
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26. Detecting radio pulses from air showers

Author

Horneffer, A., primary, Apel, W.D., additional, Arteaga, J.C., additional, Asch, T., additional, Auffenberg, J., additional, Badea, F., additional, Bahren, L., additional, Bekk, K., additional, Bertaina, M., additional, Biermann, P.L., additional, Blumer, J., additional, Bozdog, H., additional, Brancus, I.M., additional, Bruggemann, M., additional, Buchholz, P., additional, Buitink, S., additional, Cantoni, E., additional, Chiavassa, A., additional, Cossavella, F., additional, Daumiller, K., additional, de Souza, V., additional, Di Pierro, F., additional, Doll, P., additional, Engel, R., additional, Falcke, H., additional, Finger, M., additional, Fuhrmann, D., additional, Gemmeke, H., additional, Ghia, P.L., additional, Glasstetter, R., additional, Grupen, C., additional, Haungs, A., additional, Heck, D., additional, Horandel, J.R., additional, Huege, T., additional, Isar, P.G., additional, Kampert, K.-H., additional, Kang, D., additional, Kickelbick, D., additional, Kolotaev, Y., additional, Kromer, O., additional, Kuijpers, J., additional, Lafebre, S., additional, Luczak, P., additional, Mathes, H.J., additional, Mayer, H.J., additional, Milke, J., additional, Mitrica, B., additional, Morello, C., additional, Navarra, G., additional, Nehls, S., additional, Nigl, A., additional, Oehlschlager, J., additional, Over, S., additional, Petcu, M., additional, Pierog, T., additional, Rautenberg, J., additional, Rebel, H., additional, Roth, M., additional, Saftoiu, A., additional, Schieler, H., additional, Schmidt, A., additional, Schroder, F., additional, Sima, O., additional, Singh, K., additional, Stumpert, M., additional, Toma, G., additional, Trinchero, G.C., additional, Ulrich, H., additional, Walkowiak, W., additional, Weindl, A., additional, Wochele, J., additional, Wommer, M., additional, Zabierowski, J., additional, and Zensus, J.A., additional

Published
2008
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27. HIGH-ENERGY COSMIC RAYS INVESTIGATED BY AIR-SHOWER MEASUREMENTS WITH KASCADE, KASCADE-GRANDE, AND LOPES

Author

HAUNGS, A., primary, APEL, W. D., additional, BADEA, F., additional, BÄHREN, L., additional, BEKK, K., additional, BERCUCI, A., additional, BERTAINA, M., additional, BIERMANN, P. L., additional, BLÜMER, J., additional, BOZDOG, H., additional, BRANCUS, I. M., additional, BRÜGGEMANN, M., additional, BUCHHOLZ, P., additional, BUITINK, S., additional, BUTCHER, H., additional, CHIAVASSA, A., additional, DAUMILLER, K., additional, DE BRUYN, A. G., additional, DE VOS, C. M., additional, DI PIERRO, F., additional, DOLL, P., additional, ENGEL, R., additional, ENGLER, J., additional, FALCKE, H., additional, GEMMEKE, H., additional, GHIA, P. L., additional, GILS, H.-J., additional, GLASSTETTER, R., additional, GRUPEN, C., additional, HECK, D., additional, HÖRANDEL, J. R., additional, HORNEFFER, A., additional, HUEGE, T., additional, KAMPERT, K.-H., additional, KANT, G. W., additional, KLAGES, H. O., additional, KLEIN, U., additional, KOLOTAEV, Y., additional, KOOPMAN, Y., additional, KRÖMER, O., additional, KUIJPERS, J., additional, LAFEBRE, S., additional, MAIER, G., additional, MATHES, H. J., additional, MAYER, H. J., additional, MILKE, J., additional, MITRICA, B., additional, MORELLO, C., additional, MÜLLER, M., additional, NAVARRA, G., additional, NEHLS, S., additional, NIGL, A., additional, OBENLAND, R., additional, OEHLSCHLÄGER, J., additional, OSTAPCHENKO, S., additional, OVER, S., additional, PEPPING, H. J., additional, PETCU, M., additional, PETROVIC, J., additional, PIEROG, T., additional, PLEWNIA, S., additional, REBEL, H., additional, RISSE, A., additional, ROTH, M., additional, SCHIELER, H., additional, SCHOONDERBEEK, G., additional, SIMA, O., additional, STÜMPERT, M., additional, TOMA, G., additional, TRINCHERO, G. C., additional, ULRICH, H., additional, VAN BUREN, J., additional, VAN CAPELLEN, W., additional, WALKOWIAK, W., additional, WEINDL, A., additional, WIJNHOLDS, S., additional, WOCHELE, J., additional, ZABIEROWSKI, J., additional, ZENSUS, J. A., additional, and ZIMMERMANN, D., additional

Published
2006
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28. ADVANCED DETECTION METHODS OF RADIO SIGNALS FROM COSMIC RAYS FOR KASCADE GRANDE AND AUGER

Author

GEMMEKE, H., primary, APEL, W. D., additional, BADEA, F. A., additional, BÄHREN, L., additional, BEKK, K., additional, BERCUCI, A., additional, BERTAINA, M., additional, BIERMANN, P. L., additional, BLÜMER, J., additional, BOZDOG, H., additional, BRANCUS, I. M., additional, BRÜGGEMANN, M., additional, BUCHHOLZ, P., additional, BUITINK, S., additional, BUTCHER, H., additional, CHIAVASSA, A., additional, DAUMILLER, K., additional, DE BRUYN, A. G., additional, DE VOS, C. M., additional, DI PIERRO, F., additional, DOLL, P., additional, ENGEL, R., additional, FALCKE, H., additional, GHIA, P. L., additional, GLASSTETTER, R., additional, GRUPEN, C., additional, HAUNGS, A., additional, HECK, D., additional, HÖRANDEL, J. R., additional, HORNEFFER, A., additional, HUEGE, T., additional, KAMPERT, K.-H., additional, KANT, G. W., additional, KLEIN, U., additional, KOLOTAEV, Y., additional, KOOPMAN, Y., additional, KRÖMER, O., additional, KUIJPERS, J., additional, LAFEBRE, S., additional, MAIER, G., additional, MATHES, H. J., additional, MAYERS, H. J., additional, MILKE, J., additional, MITRICA, B., additional, MORELLO, C., additional, NAVARRA, G., additional, NEHLS, S., additional, NIGL, A., additional, OBENLAND, R., additional, OEHLSCHLÄGER, J., additional, OSTAPCHENKO, S., additional, OVER, S., additional, PEPPING, H. J., additional, PETCU, M., additional, PETROVIC, J., additional, PIEROG, T., additional, PLEWNIA, S., additional, REBEL, H., additional, RISSE, A., additional, ROTH, M., additional, SCHIELER, H., additional, SCHOONDERBEEK, G., additional, SIMA, O., additional, STÜMPERT, M., additional, TOMA, G., additional, TRINCHERO, G. C., additional, ULRICH, H., additional, VAN BUREN, J., additional, VAN CAPELLEN, W., additional, WALKOWIAK, W., additional, WEINDL, A., additional, WIJNHOLDS, S., additional, WOCHELE, J., additional, ZABIEROWSKI, J., additional, ZENSUS, J. A., additional, and ZIMMERMANN, D., additional

Published
2006
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29. RADIO DETECTION OF COSMIC RAYS WITH LOPES

Author

HORNEFFER, A., primary, APEL, W. D., additional, BADEA, F., additional, BÄHREN, L., additional, BEKK, K., additional, BERCUCI, A., additional, BERTAINA, M., additional, BIERMANN, P. L., additional, BLÜMER, J., additional, BOZDOG, H., additional, BRANCUS, I. M., additional, BRÜGGEMANN, M., additional, BUCHHOLZ, P., additional, BUITINK, S., additional, BUTCHER, H., additional, CHIAVASSA, A., additional, DAUMILLER, K., additional, DE BRUYN, A. G., additional, DE VOS, C. M., additional, DI PIERRO, F., additional, DOLL, P., additional, ENGEL, R., additional, FALCKE, H., additional, GEMMEKE, H., additional, GHIA, P. L., additional, GLASSTETTER, R., additional, GRUPEN, C., additional, HAUNGS, A., additional, HECK, D., additional, HÖRANDEL, J. R., additional, HUEGE, T., additional, KAMPERT, K.-H., additional, KANT, G. W., additional, KLEIN, U., additional, KOLOTAEV, Y., additional, KOOPMAN, Y., additional, KRÖMER, O., additional, KUIJPERS, J., additional, LAFEBRE, S., additional, MAIER, G., additional, MATHES, H. J., additional, MAYER, H. J., additional, MILKE, J., additional, MITRICA, B., additional, MORELLO, C., additional, NAVARRA, G., additional, NEHLS, S., additional, NIGL, A., additional, OBENLAND, R., additional, OEHLSCHLÄGER, J., additional, OSTAPCHENKO, S., additional, OVER, S., additional, PEPPING, H. J., additional, PETCU, M., additional, PETROVIC, J., additional, PIEROG, T., additional, PLEWNIA, S., additional, REBEL, H., additional, RISSE, A., additional, ROTH, M., additional, SCHIELER, H., additional, SCHOONDERBEEK, G., additional, SIMA, O., additional, STÜMPERT, M., additional, TOMA, G., additional, TRINCHERO, G. C., additional, ULRICH, H., additional, VAN BUREN, J., additional, VAN CAPELLEN, W., additional, WALKOWIAK, W., additional, WEINDL, A., additional, WIJNHOLDS, S., additional, WOCHELE, J., additional, ZABIEROWSKI, J., additional, ZENSUS, J. A., additional, and ZIMMERMANN, D., additional

Published
2006
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31. ABSOLUTE CALIBRATION OF THE LOPES ANTENNA SYSTEM

Author

NEHLS, S., primary, APEL, W. D., additional, BADEA, F., additional, BÄHREN, L., additional, BEKK, K., additional, BERCUCI, A., additional, BERTAINA, M., additional, BIERMANN, P. L., additional, BLÜMER, J., additional, BOZDOG, H., additional, BRANCUS, I. M., additional, BRÜGGEMANN, M., additional, BUCHHOLZ, P., additional, BUITINK, S., additional, BUTCHER, H., additional, CHIAVASSA, A., additional, DAUMILLER, K., additional, DE BRUYN, A. G., additional, DE VOS, C. M., additional, DI PIERRO, F., additional, DOLL, P., additional, ENGEL, R., additional, FALCKE, H., additional, GEMMEKE, H., additional, GHIA, P. L., additional, GLASSTETTER, R., additional, GRUPEN, C., additional, HAKENJOS, A., additional, HAUNGS, A., additional, HECK, D., additional, HÖRANDEL, J. R., additional, HORNEFFER, A., additional, HUEGE, T., additional, KAMPERT, K.-H., additional, KANT, G. W., additional, KLEIN, U., additional, KOLOTAEV, Y., additional, KOOPMAN, Y., additional, KRÖMER, O., additional, KUIJPERS, J., additional, LAFEBRE, S., additional, MAIER, G., additional, MATHES, H. J., additional, MAYER, H. J., additional, MILKE, J., additional, MITRICA, B., additional, MORELLO, C., additional, NAVARRA, G., additional, NIGL, A., additional, OBENLAND, R., additional, OEHLSCHLÄGER, J., additional, OSTAPCHENKO, S., additional, OVER, S., additional, PEPPING, H. J., additional, PETCU, M., additional, PETROVIC, J., additional, PIEROG, T., additional, PLEWNIA, S., additional, REBEL, H., additional, RISSE, A., additional, ROTH, M., additional, SCHIELER, H., additional, SCHOONDERBEEK, G., additional, SIMA, O., additional, STÜMPERT, M., additional, TOMA, G., additional, TRINCHERO, G. C., additional, ULRICH, H., additional, VAN BUREN, J., additional, VAN CAPELLEN, W., additional, WALKOWIAK, W., additional, WEINDL, A., additional, WIJNHOLDS, S., additional, WOCHELE, J., additional, ZABIEROWSKI, J., additional, ZENSUS, J. A., additional, and ZIMMERMANN, D., additional

Published
2006
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34. Radio follow-up observations of stellar tidal disruption flares: Constraints on off-axis jets.

Author

van Velzen, S., Frail, D. A., Kórding, E., and Falcke, H.

Subjects
ACTIVE galactic nuclei, X-ray binaries, BLACK holes, EARLY stars, RADIO frequency
Abstract

Observations of active galactic nuclei (AGN) and X-ray binaries have shown that relativistic jets are ubiquitous when compact objects accrete. One could therefore anticipate the launch of a jet after a star is disrupted and accreted by a massive black hole. This birth of a relativistic jet may have been observed recently in two stellar tidal disruption flares (TDFs), which were discovered in gamma-rays by Swift. Yet no transient radio emission has been detected from the tens of TDF candidates that were discovered at optical to soft X-ray frequencies. Because the sample that was followed-up at radio frequencies is small, the non-detections can be explained by Doppler boosting, which reduces the jet flux for off-axis observers. Plus, the existing followup observation are mostly within ~ 10 months of the discovery, so the non-detections can also be due to a delay of the radio emission with respect to the time of disruption. To test the conjecture that all TDFs launch jets, we obtained 5 GHz follow-up observations with the Jansky VLA of six known TDFs. To avoid missing delayed jet emission, our observations probe 1-8 years since the estimated time of disruption. None of the sources are detected, with very deep upper limits at the 10 micro Jansky level. These observations rule out the hypothesis that these TDFs launched jets similar to radio-loud quasars. We also constrain the possibility that the flares hosted a jet identical to Sw 1644+57. [ABSTRACT FROM AUTHOR]

Published
2012
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36. KASCADE extensive air shower experiment

Author

Schieler, Harald, primary, Antoni, T., additional, Apel, W. D., additional, Badea, F., additional, Bekk, K., additional, Bercuci, A., additional, Bertaina, M., additional, Bulmer, H., additional, Bozdog, H., additional, Brancus, I. M., additional, Buttner, C., additional, Chiavassa, A., additional, Daumiller, K., additional, de Vos, C. M., additional, Doll, P., additional, Engler, J., additional, Falcke, H., additional, Fessler, F., additional, Ghia, P. L., additional, Gils, H. J., additional, Glasstetter, R., additional, Haeusler, R., additional, Haungs, A., additional, Heck, D., additional, Horandel, J. R., additional, Horneffer, A., additional, Huege, T., additional, Iwan, A., additional, Kampert, Karl-Heinz, additional, Kant, G. W., additional, Klages, H. O., additional, Maier, Gert, additional, Mathes, H. J., additional, Mayer, Helmut J., additional, Milke, J., additional, Morello, C., additional, Muller, M., additional, Navarra, G., additional, Obenland, R., additional, Oehlschlager, J., additional, Ostapchenko, S., additional, Petcu, Mihai, additional, Rebel, H., additional, Risse, M., additional, Roth, M., additional, Schatz, G., additional, Scholz, J., additional, Thouw, T., additional, Trinchero, G. C., additional, Ulrich, Hermann, additional, Weber, J. H., additional, Weindl, A., additional, Wentz, J., additional, Wochele, J., additional, Zabierowski, J., additional, and Zagromski, S., additional

Published
2003
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37. KASCADE extensive air shower experiment.

Author

Schieler, Harald, Antoni, T., Apel, W. D., Badea, F., Bekk, K., Bercuci, A., Bertaina, M., Bulmer, H., Bozdog, H., Brancus, I. M., Buttner, C., Chiavassa, A., Daumiller, K., de Vos, C. M., Doll, P., Engler, J., Falcke, H., Fessler, F., Ghia, P. L., and Gils, H. J.

Published
2003
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38. A jet-disk symbiosis model for gamma ray bursts: Fluence distribution, cosmic rays and neutrinos.

Author

Pugliese, G., Falcke, H., Wang, Y., and Biermann, P. L.

Subjects
DISKS (Astrophysics), GAMMA ray bursts, NEUTRON stars
Abstract

We consider a jet-disk symbiosis model to explain Gamma Ray Bursts and their afterglows. It is proposed that GRBs are created inside a pre-existing jet from a neutron star in a binary system which collapses to a black hole due to accretion. In our model we assume that a fraction of the initial energy due to this transition is deposited in the jet by magnetic fields. The observed emission is then due to an ultrarelativistic shock wave propagating along the jet. Good agreement with observational data can be obtained for systems such as the Galactic jet source SS433. Specifically, we are able to reproduce the typical observed afterglow emission flux, its spectrum as a function of time, and the fluence distribution of the corrected data for the 4B BATSE catalogue. We also studied the relation between the cosmological evolution of our model and the cosmic ray energy distribution. We used the Star Formation Rate (SFR) as a function of redshift to obtain the distribution in fluences of GRBs in our model. The fluence in the gamma ray band has been used to calculate the energy in cosmic rays both in our Galaxy and at extragalactic distances. This energy input has been compared with the Galactic and extragalactic spectrum of cosmic rays and neutrinos. We found that in the context of our model it is not possible to have any contribution from GRBs to either the extragalactic or the Galactic cosmic ray spectra. © 2000 American Institute of Physics. [ABSTRACT FROM AUTHOR]

Published
2000

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