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1. Milli-Hertz Gravitational Waves: LISA and LISA PathFinder.

Author

Araújo, H., Cañizares, P., Chmeissani, M., Conchillo, A., Díaz-Aguiló, M., García-Berro, E., Gesa, L., Gibert, F., Grimani, C., Hajdas, W., Hollington, D., Lloro, I., Lobo, A., Mateos, I., Nofrarias, M., Puigdengoles, C., Ramos-Castro, J., Sanjuán, J., Sopuerta, CF, and Wass, P.

Published
2011
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2. Scientific objectives of Einstein Telescope

Author

V. Fafone, C. Kant Mishra, M. Doets, A. Cumming, M. Lorenzini, Tjonnie G. F. Li, B. Lagrange, M. R. Abernathy, J. H. Hough, Roman Schnabel, Michael Britzger, F. Brueckner, J. F. J. van den Brand, Martin Hendry, Adam Woodcraft, K. V. Tokmakov, Valeria Ferrari, J. Franc, Graham Woan, F. Richard, N. Beveridge, Bernard F. Schutz, A. Morgia, M. van Veggel, G. D. Hammond, C. Graef, Sascha Husa, Alberto Vecchio, S. Chelkowski, Ian Hawke, E. Chassande-Mottin, Kostas Glampedakis, Frédérique Marion, Rosa Poggiani, N. Lastzka, Sheila Rowan, Lucía Santamaría, R. O'. Shaughnessy, Paul Fulda, P. Weßels, B. Mours, Moritz Mehmet, D. J. A. McKechan, A. Colla, Henning Vahlbruch, Alicia M. Sintes, Benno Willke, Badri Krishnan, Hartmut Grote, Ronny Nawrodt, F. Y. Khalili, G. Losurdo, Mauro Tonelli, Loriano Storchi, C. Palomba, E. Genin, S. Van Der Putten, Fumiko Kawazoe, Christian D. Ott, K. Haughian, Tania Regimbau, H. Rehbein, S. P. Vyatchanin, S. L. Danilishin, Ilya Mandel, Ettore Majorana, Ik Siong Heng, Stefanie Kroker, C. Robinson, Paolo Falferi, M. Galimberti, D. Passuello, Y. Minenkov, M. Barsuglia, Benjamin William Allen, Karsten Danzmann, John Nelson, Riccardo Bassiri, S. Braccini, S. Reid, Bangalore Suryanarayana Sathyaprakash, G. M. Guidi, R. Vaccarone, Giancarlo Cella, Carlos F. Sopuerta, L. Moscatelli, C. Van Den Broeck, Mark Beker, V. Re, H. J. Bulten, P. G. Murray, A. Gennai, A. Pasqualetti, L. Naticchioni, G. Parguez, Kostas D. Kokkotas, Jonathan R. Gair, Jan Harms, Leor Barack, Pau Amaro-Seoane, C. N. Colacino, E. Chalkley, Kazuaki Kuroda, J. Dueck, L. Di Fiore, E. J. Daw, M. Punturo, E. Hennes, Daniel Friedrich, P. J. Sutton, R. Passaquieti, E. Coccia, M. A. Bizouard, Federico Ferrini, A. Viceré, A. Giazotto, Aiko Samblowski, B. Kley, Christine Michel, P. Ajith, Benjamin Taylor, G. A. Prodi, R. Flaminio, A. Rocchi, P. Astone, F. Vetrano, M. Di Paolo Emilio, F. Piergiovanni, Angela Delli Paoli, Rajesh Kumar, Massimo Bassan, P. Puppo, Craig A. Bond, L. Cunningham, J. M. Hallam, S. Márka, Kenneth A. Strain, C. Schwarz, F. Fidecaro, Nils Andersson, K. G. Arun, H. Lück, A. Thürin, B. Sorazu, Paul Campsie, Wolfango Plastino, Andrea Chincarini, John K. Scott, I. W. Martin, D. Heinert, F. Ricci, W. Del Pozzo, E. Cuoco, Vuk Mandic, M. V. Plissi, L. Bosi, S. E. Strigin, H. Tournefier, A. Corsi, Patricia Schmidt, Fiona C. Speirits, Benoit Sassolas, R. De Salvo, S. Mosca, John Veitch, Francesco Marin, S. H. Huttner, P. Popolizio, Laurent Pinard, Helge Müller-Ebhardt, Stefan Hild, Suvadeep Bose, R. Gouaty, Sofiane Aoudia, Enrico Calloni, G. T. Jones, P. Rapagnani, Andreas Freise, Kazuhiro Yamamoto, James S. Clark, Mirko Prato, J. Colas, M. Edwards, Matthew Pitkin, W. Graham, F. Frasconi, D. Mc. Leod, M. Granata, D. S. Rabeling, I. Kamaretsos, István Rácz, Jocelyn Read, R. Schilling, Rocco Romano, M. Perciballi, A. Di. Cintio, Marc Favata, J. Marque, L. Carbone, Tomasz Bulik, W. Winkler, V. Malvezzi, N. Morgado, Fabrizio Barone, T. Dent, R. De Rosa, Fausto Acernese, Kentaro Somiya, C. Bradaschia, D. I. Jones, Stephen Fairhurst, Edward K. Porter, B. Barr, Bala R. Iyer, A. Rüdiger, Oliver Burmeister, Gianluca Gemme, S. P. Tarabrin, Paul Seidel, Keiko Kokeyama, D. Huet, A. Dietz, Mark Hannam, S. Gossan, A. Di Virgilio, Astrophysique Relativiste Théories Expériences Métrologie Instrumentation Signaux (ARTEMIS), Centre National de la Recherche Scientifique (CNRS)-Observatoire de la Côte d'Azur, Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA), (Astro)-Particles Physics, Mathematical Analysis, Sathyaprakash, B, Abernathy, M, Acernese, F, Ajith, P, Allen, B, Amaro Seoane, P, Andersson, N, Aoudia, S, Arun, K, Astone, P, Krishnan, B, Barack, L, Barone, F, Barr, B, Barsuglia, M, Bassan, M, Bassiri, R, Beker, M, Beveridge, N, Bizouard, M, Bond, C, Bose, S, Bosi, L, Braccini, S, Bradaschia, C, Britzger, M, Brueckner, F, Bulik, T, Bulten, Hj, Burmeister, O, Calloni, E, Campsie, P, Carbone, L, Cella, G, Chalkley, E, Chassande Mottin, E, Chelkowski, S, Chincarini, A, Cintio, Ad, Clark, J, Coccia, E, Colacino, Cn, Colas, J, Colla, A, Corsi, A, Cumming, A, Cunningham, L, Cuoco, E, Danilishin, S, Danzmann, K, Daw, E, De Salvo, R, Pozzo, Wd, Dent, T, De Rosa, R, Fiore, Ld, Emilio, Mdp, Virgilio, Ad, Dietz, A, Doets, M, Dueck, J, Edwards, M, Fafone, V, Fairhurst, S, Falferi, P, Favata, M, Ferrari, V, Ferrini, F, Fidecaro, F, Flaminio, R, Franc, J, Frasconi, F, Freise, A, Friedrich, D, Fulda, P, Gair, J, Galimberti, M, Gemme, G, Genin, E, Gennai, A, Giazotto, A, Glampedakis, K, Gossan, S, Gouaty, R, Graef, C, Graham, W, Granata, M, Grote, H, Guidi, G, Hallam, J, Hammond, G, Hannam, M, Harms, J, Haughian, K, Hawke, I, Heinert, D, Hendry, M, Heng, I, Hennes, E, Hild, S, Hough, J, Huet, D, Husa, S, Huttner, S, Iyer, B, Jones, Di, Jones, G, Kamaretsos, I, Mishra, Ck, Kawazoe, F, Khalili, F, Kley, B, Kokeyama, K, Kokkotas, K, Kroker, S, Kumar, R, Kuroda, K, Lagrange, B, Lastzka, N, Li, Tgf, Lorenzini, M, Losurdo, G, Lück, H, Majorana, E, Malvezzi, V, Mandel, I, Mandic, V, Marka, S, Marin, F, Marion, F, Marque, J, Martin, I, Leod, Dm, Mckechan, D, Mehmet, M, Michel, C, Minenkov, Y, Morgado, N, Morgia, A, Mosca, S, Moscatelli, L, Mours, B, Müller Ebhardt, H, Murray, P, Naticchioni, L, Nawrodt, R, Nelson, J, Shaughnessy, Ro, Ott, Cd, Palomba, C, Paoli, A, Parguez, G, Pasqualetti, A, Passaquieti, R, Passuello, D, Perciballi, M, Piergiovanni, F, Pinard, L, Pitkin, M, Plastino, Wolfango, Plissi, M, Poggiani, R, Popolizio, P, Porter, E, Prato, M, Prodi, G, Punturo, M, Puppo, P, Rabeling, D, Racz, I, Rapagnani, P, Re, V, Read, J, Regimbau, T, Rehbein, H, Reid, S, Ricci, F, Richard, F, Robinson, C, Rocchi, A, Romano, R, Rowan, S, Rüdiger, A, Samblowski, A, Santamaría, L, Sassolas, B, Schilling, R, Schmidt, P, Schnabel, R, Schutz, B, Schwarz, C, Scott, J, Seidel, P, Sintes, Am, Somiya, K, Sopuerta, Cf, Sorazu, B, Speirits, F, Storchi, L, Strain, K, Strigin, S, Sutton, P, Tarabrin, S, Taylor, B, Thürin, A, Tokmakov, K, Tonelli, M, Tournefier, H, Vaccarone, R, Vahlbruch, H, Van Den Brand, Jfj, Van Den Broeck, C, Van Der Putten, S, Van Veggel, M, Vecchio, A, Veitch, J, Vetrano, F, Vicere, A, Vyatchanin, S, Weels, P, Willke, B, Winkler, W, Woan, G, Woodcraft, A, Yamamoto, K., B., Sathyaprakash, M., Abernathy, F., Acernese, P., Ajith, B., Allen, P., Amaro Seoane, N., Andersson, S., Aoudia, K., Arun, P., Astone, B., Krishnan, L., Barack, F., Barone, B., Barr, M., Barsuglia, M., Bassan, R., Bassiri, M., Beker, N., Beveridge, M., Bizouard, C., Bond, S., Bose, L., Bosi, S., Braccini, C., Bradaschia, M., Britzger, F., Brueckner, T., Bulik, H. J., Bulten, O., Burmeister, Calloni, Enrico, P., Campsie, L., Carbone, G., Cella, E., Chalkley, E., Chassande Mottin, S., Chelkowski, A., Chincarini, A., Di Cintio, J., Clark, E., Coccia, C. N., Colacino, J., Cola, A., Colla, A., Corsi, A., Cumming, L., Cunningham, E., Cuoco, S., Danilishin, K., Danzmann, E., Daw, R., De Salvo, W., Del Pozzo, T., Dent, DE ROSA, Rosario, L., Di Fiore, M., Di Paolo Emilio, A., Di Virgilio, A., Dietz, M., Doet, J., Dueck, M., Edward, V., Fafone, S., Fairhurst, P., Falferi, M., Favata, V., Ferrari, F., Ferrini, F., Fidecaro, R., Flaminio, J., Franc, F., Frasconi, A., Freise, D., Friedrich, P., Fulda, J., Gair, M., Galimberti, G., Gemme, E., Genin, A., Gennai, A., Giazotto, K., Glampedaki, S., Gossan, R., Gouaty, C., Graef, W., Graham, M., Granata, H., Grote, G., Guidi, J., Hallam, G., Hammond, M., Hannam, J., Harm, K., Haughian, I., Hawke, D., Heinert, M., Hendry, I., Heng, E., Henne, S., Hild, J., Hough, D., Huet, S., Husa, S., Huttner, B., Iyer, D. I., Jone, G., Jone, I., Kamaretso, C., Kant Mishra, F., Kawazoe, F., Khalili, B., Kley, K., Kokeyama, K., Kokkota, S., Kroker, R., Kumar, K., Kuroda, B., Lagrange, N., Lastzka, T. G. F., Li, M., Lorenzini, G., Losurdo, H., Lück, E., Majorana, V., Malvezzi, I., Mandel, V., Mandic, S., Marka, F., Marin, F., Marion, J., Marque, I., Martin, D., Mc Leod, D., Mckechan, M., Mehmet, C., Michel, Y., Minenkov, N., Morgado, A., Morgia, S., Mosca, L., Moscatelli, B., Mour, H., Müller Ebhardt, P., Murray, L., Naticchioni, R., Nawrodt, J., Nelson, R., O’ Shaughnessy, C. D., Ott, C., Palomba, A., Paoli, G., Parguez, A., Pasqualetti, R., Passaquieti, D., Passuello, M., Perciballi, F., Piergiovanni, L., Pinard, M., Pitkin, W., Plastino, M., Plissi, R., Poggiani, P., Popolizio, E., Porter, M., Prato, G., Prodi, M., Punturo, P., Puppo, D., Rabeling, I., Racz, P., Rapagnani, V., Re, J., Read, T., Regimbau, H., Rehbein, S., Reid, F., Ricci, F., Richard, C., Robinson, A., Rocchi, R., Romano, S., Rowan, A., Rüdiger, A., Samblowski, L., Santamaría, B., Sassola, R., Schilling, P., Schmidt, R., Schnabel, B., Schutz, C., Schwarz, J., Scott, P., Seidel, A. M., Sinte, K., Somiya, C. F., Sopuerta, B., Sorazu, F., Speirit, L., Storchi, K., Strain, S., Strigin, P., Sutton, S., Tarabrin, B., Taylor, A., Thürin, K., Tokmakov, M., Tonelli, H., Tournefier, R., Vaccarone, H., Vahlbruch, J. F. J., van den Brand, C., Van Den Broeck, S., van der Putten, M., van Veggel, A., Vecchio, J., Veitch, F., Vetrano, A., Vicere, S., Vyatchanin, P., Weßel, B., Willke, W., Winkler, G., Woan, A., Woodcraft, K., Yamamoto, AstroParticule et Cosmologie (APC (UMR_7164)), Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Laboratoire des matériaux avancés (LMA), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon, Observatoire de la Côte d'Azur (OCA), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), APC - Cosmologie, Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-AstroParticule et Cosmologie (APC (UMR_7164)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), APC - Gravitation (APC-Gravitation), PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Max-Planck-Institut für Gravitationsphysik ( Albert-Einstein-Institut ) (AEI), Max-Planck-Gesellschaft-Max-Planck-Gesellschaft, Laboratoire d'Annecy de Physique des Particules (LAPP/Laboratoire d'Annecy-le-Vieux de Physique des Particules), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), and Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Cosmology and Nongalactic Astrophysics (astro-ph.CO), Physics and Astronomy (miscellaneous), [SDU.ASTR.CO]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Physics::Instrumentation and Detectors, Interferometers, Gravitational waves detectors and experiments, Observatories and site testing, GRAVITATIONAL-WAVE OBSERVATIONS, FOS: Physical sciences, GAMMA-RAY BURSTS, BLACK-HOLE, PHYSICS, INTERMEDIATE, BINARIES, TAILS, General Relativity and Quantum Cosmology (gr-qc), onde gravitazionali, Astrophysics, 01 natural sciences, General Relativity and Quantum Cosmology, Cosmology, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Observational astronomy, Settore FIS/05 - Astronomia e Astrofisica, antenne gravitazionali iterferometriche, gravitazione, 0103 physical sciences, 010306 general physics, ComputingMilieux_MISCELLANEOUS, [PHYS]Physics [physics], Physics, Detection of gravitational waves, Einstein Telescope, 010308 nuclear & particles physics, Detector, Settore FIS/01 - Fisica Sperimentale, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Cosmology and Extragalactic Astrophysics, BINARY, Interferometry, Fundamental physics, [PHYS.GRQC]Physics [physics]/General Relativity and Quantum Cosmology [gr-qc], [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

The advanced interferometer network will herald a new era in observational astronomy. There is a very strong science case to go beyond the advanced detector network and build detectors that operate in a frequency range from 1 Hz-10 kHz, with sensitivity a factor ten better in amplitude. Such detectors will be able to probe a range of topics in nuclear physics, astronomy, cosmology and fundamental physics, providing insights into many unsolved problems in these areas., 18 pages, 4 figures, Plenary talk given at Amaldi Meeting, July 2011

Published
2012
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3. Sensor Noise in LISA Pathfinder: In-Flight Performance of the Optical Test Mass Readout.

Author

Armano M, Audley H, Baird J, Binetruy P, Born M, Bortoluzzi D, Brandt N, Castelli E, Cavalleri A, Cesarini A, Cruise AM, Danzmann K, de Deus Silva M, Diepholz I, Dixon G, Dolesi R, Ferraioli L, Ferroni V, Fitzsimons ED, Flatscher R, Freschi M, García A, Gerndt R, Gesa L, Giardini D, Gibert F, Giusteri R, Grimani C, Grzymisch J, Guzman F, Harrison I, Hartig MS, Heinzel G, Hewitson M, Hollington D, Hoyland D, Hueller M, Inchauspé H, Jennrich O, Jetzer P, Johann U, Johlander B, Karnesis N, Kaune B, Killow CJ, Korsakova N, Lobo JA, Liu L, López-Zaragoza JP, Maarschalkerweerd R, Mance D, Martín V, Martin-Polo L, Martin-Porqueras F, Martino J, McNamara PW, Mendes J, Mendes L, Meshksar N, Monsky A, Nofrarias M, Paczkowski S, Perreur-Lloyd M, Petiteau A, Pivato P, Plagnol E, Ramos-Castro J, Reiche J, Rivas F, Robertson DI, Russano G, Sanjuan J, Slutsky J, Sopuerta CF, Steier F, Sumner T, Texier D, Thorpe JI, Vetrugno D, Vitale S, Wand V, Wanner G, Ward H, Wass PJ, Weber WJ, Wissel L, Wittchen A, and Zweifel P

Abstract

We report on the first subpicometer interferometer flown in space. It was part of ESA's Laser Interferometer Space Antenna (LISA) Pathfinder mission and performed the fundamental measurement of the positional and angular motion of two free-falling test masses. The interferometer worked immediately, stably, and reliably from switch on until the end of the mission with exceptionally low residual noise of 32.0_{-1.7}^{+2.4}  fm/sqrt[Hz], significantly better than required. We present an upper limit for the sensor performance at millihertz frequencies and a model for the measured sensitivity above 200 mHz.

Published
2021
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4. Analysis of the accuracy of actuation electronics in the laser interferometer space antenna pathfinder.

Author

Armano M, Audley H, Baird J, Born M, Bortoluzzi D, Cardines N, Castelli E, Cavalleri A, Cesarini A, Cruise AM, Danzmann K, de Deus Silva M, Dixon G, Dolesi R, Ferraioli L, Ferroni V, Fitzsimons ED, Freschi M, Gesa L, Giardini D, Gibert F, Giusteri R, Grimani C, Grzymisch J, Harrison I, Hartig MS, Heinzel G, Hewitson M, Hollington D, Hoyland D, Hueller M, Inchauspé H, Jennrich O, Jetzer P, Karnesis N, Kaune B, Killow CJ, Korsakova N, López-Zaragoza JP, Maarschalkerweerd R, Mance D, Martín V, Martin-Polo L, Martino J, Martin-Porqueras F, Mateos I, McNamara PW, Mendes J, Mendes L, Meshksar N, Nofrarias M, Paczkowski S, Perreur-Lloyd M, Petiteau A, Pivato P, Plagnol E, Ramos-Castro J, Reiche J, Rivas F, Robertson DI, Russano G, Slutsky J, Sopuerta CF, Sumner T, Texier D, Ten Pierick J, Thorpe JI, Vetrugno D, Vitale S, Wanner G, Ward H, Wass PJ, Weber WJ, Wissel L, Wittchen A, and Zweifel P

Abstract

The Laser Interferometer Space Antenna Pathfinder (LPF) main observable, labeled Δg, is the differential force per unit mass acting on the two test masses under free fall conditions after the contribution of all non-gravitational forces has been compensated. At low frequencies, the differential force is compensated by an applied electrostatic actuation force, which then must be subtracted from the measured acceleration to obtain Δg. Any inaccuracy in the actuation force contaminates the residual acceleration. This study investigates the accuracy of the electrostatic actuation system and its impact on the LPF main observable. It is shown that the inaccuracy is mainly caused by the rounding errors in the waveform processing and also by the random error caused by the analog to digital converter random noise in the control loop. Both errors are one order of magnitude smaller than the resolution of the commanded voltages. We developed a simulator based on the LPF design to compute the close-to-reality actuation voltages and, consequently, the resulting actuation forces. The simulator is applied during post-processing the LPF data.

Published
2020
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5. LISA Pathfinder Performance Confirmed in an Open-Loop Configuration: Results from the Free-Fall Actuation Mode.

Author

Armano M, Audley H, Baird J, Binetruy P, Born M, Bortoluzzi D, Castelli E, Cavalleri A, Cesarini A, Cruise AM, Danzmann K, de Deus Silva M, Diepholz I, Dixon G, Dolesi R, Ferraioli L, Ferroni V, Fitzsimons ED, Freschi M, Gesa L, Gibert F, Giardini D, Giusteri R, Grimani C, Grzymisch J, Harrison I, Hartig MS, Heinzel G, Hewitson M, Hollington D, Hoyland D, Hueller M, Inchauspé H, Jennrich O, Jetzer P, Karnesis N, Kaune B, Korsakova N, Killow CJ, Lobo JA, Liu L, López-Zaragoza JP, Maarschalkerweerd R, Mance D, Meshksar N, Martín V, Martin-Polo L, Martino J, Martin-Porqueras F, Mateos I, McNamara PW, Mendes J, Mendes L, Nofrarias M, Paczkowski S, Perreur-Lloyd M, Petiteau A, Pivato P, Plagnol E, Ramos-Castro J, Reiche J, Robertson DI, Rivas F, Russano G, Slutsky J, Sopuerta CF, Sumner T, Texier D, Thorpe JI, Vetrugno D, Vitale S, Wanner G, Ward H, Wass PJ, Weber WJ, Wissel L, Wittchen A, and Zweifel P

Abstract

We report on the results of the LISA Pathfinder (LPF) free-fall mode experiment, in which the control force needed to compensate the quasistatic differential force acting on two test masses is applied intermittently as a series of "impulse" forces lasting a few seconds and separated by roughly 350 s periods of true free fall. This represents an alternative to the normal LPF mode of operation in which this balancing force is applied continuously, with the advantage that the acceleration noise during free fall is measured in the absence of the actuation force, thus eliminating associated noise and force calibration errors. The differential acceleration noise measurement presented here with the free-fall mode agrees with noise measured with the continuous actuation scheme, representing an important and independent confirmation of the LPF result. An additional measurement with larger actuation forces also shows that the technique can be used to eliminate actuation noise when this is a dominant factor.

Published
2019
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6. Beyond the Required LISA Free-Fall Performance: New LISA Pathfinder Results down to 20  μHz.

Author

Armano M, Audley H, Baird J, Binetruy P, Born M, Bortoluzzi D, Castelli E, Cavalleri A, Cesarini A, Cruise AM, Danzmann K, de Deus Silva M, Diepholz I, Dixon G, Dolesi R, Ferraioli L, Ferroni V, Fitzsimons ED, Freschi M, Gesa L, Gibert F, Giardini D, Giusteri R, Grimani C, Grzymisch J, Harrison I, Heinzel G, Hewitson M, Hollington D, Hoyland D, Hueller M, Inchauspé H, Jennrich O, Jetzer P, Karnesis N, Kaune B, Korsakova N, Killow CJ, Lobo JA, Lloro I, Liu L, López-Zaragoza JP, Maarschalkerweerd R, Mance D, Meshksar N, Martín V, Martin-Polo L, Martino J, Martin-Porqueras F, Mateos I, McNamara PW, Mendes J, Mendes L, Nofrarias M, Paczkowski S, Perreur-Lloyd M, Petiteau A, Pivato P, Plagnol E, Ramos-Castro J, Reiche J, Robertson DI, Rivas F, Russano G, Slutsky J, Sopuerta CF, Sumner T, Texier D, Thorpe JI, Vetrugno D, Vitale S, Wanner G, Ward H, Wass PJ, Weber WJ, Wissel L, Wittchen A, and Zweifel P

Abstract

In the months since the publication of the first results, the noise performance of LISA Pathfinder has improved because of reduced Brownian noise due to the continued decrease in pressure around the test masses, from a better correction of noninertial effects, and from a better calibration of the electrostatic force actuation. In addition, the availability of numerous long noise measurement runs, during which no perturbation is purposely applied to the test masses, has allowed the measurement of noise with good statistics down to 20  μHz. The Letter presents the measured differential acceleration noise figure, which is at (1.74±0.05)  fm s^{-2}/sqrt[Hz] above 2 mHz and (6±1)×10  fm s^{-2}/sqrt[Hz] at 20  μHz, and discusses the physical sources for the measured noise. This performance provides an experimental benchmark demonstrating the ability to realize the low-frequency science potential of the LISA mission, recently selected by the European Space Agency.

Published
2018
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7. Sub-Femto-g Free Fall for Space-Based Gravitational Wave Observatories: LISA Pathfinder Results.

Author

Armano M, Audley H, Auger G, Baird JT, Bassan M, Binetruy P, Born M, Bortoluzzi D, Brandt N, Caleno M, Carbone L, Cavalleri A, Cesarini A, Ciani G, Congedo G, Cruise AM, Danzmann K, de Deus Silva M, De Rosa R, Diaz-Aguiló M, Di Fiore L, Diepholz I, Dixon G, Dolesi R, Dunbar N, Ferraioli L, Ferroni V, Fichter W, Fitzsimons ED, Flatscher R, Freschi M, García Marín AF, García Marirrodriga C, Gerndt R, Gesa L, Gibert F, Giardini D, Giusteri R, Guzmán F, Grado A, Grimani C, Grynagier A, Grzymisch J, Harrison I, Heinzel G, Hewitson M, Hollington D, Hoyland D, Hueller M, Inchauspé H, Jennrich O, Jetzer P, Johann U, Johlander B, Karnesis N, Kaune B, Korsakova N, Killow CJ, Lobo JA, Lloro I, Liu L, López-Zaragoza JP, Maarschalkerweerd R, Mance D, Martín V, Martin-Polo L, Martino J, Martin-Porqueras F, Madden S, Mateos I, McNamara PW, Mendes J, Mendes L, Monsky A, Nicolodi D, Nofrarias M, Paczkowski S, Perreur-Lloyd M, Petiteau A, Pivato P, Plagnol E, Prat P, Ragnit U, Raïs B, Ramos-Castro J, Reiche J, Robertson DI, Rozemeijer H, Rivas F, Russano G, Sanjuán J, Sarra P, Schleicher A, Shaul D, Slutsky J, Sopuerta CF, Stanga R, Steier F, Sumner T, Texier D, Thorpe JI, Trenkel C, Tröbs M, Tu HB, Vetrugno D, Vitale S, Wand V, Wanner G, Ward H, Warren C, Wass PJ, Wealthy D, Weber WJ, Wissel L, Wittchen A, Zambotti A, Zanoni C, Ziegler T, and Zweifel P

Abstract

We report the first results of the LISA Pathfinder in-flight experiment. The results demonstrate that two free-falling reference test masses, such as those needed for a space-based gravitational wave observatory like LISA, can be put in free fall with a relative acceleration noise with a square root of the power spectral density of 5.2±0.1  fm s^{-2}/sqrt[Hz], or (0.54±0.01)×10^{-15}  g/sqrt[Hz], with g the standard gravity, for frequencies between 0.7 and 20 mHz. This value is lower than the LISA Pathfinder requirement by more than a factor 5 and within a factor 1.25 of the requirement for the LISA mission, and is compatible with Brownian noise from viscous damping due to the residual gas surrounding the test masses. Above 60 mHz the acceleration noise is dominated by interferometer displacement readout noise at a level of (34.8±0.3)  fm/sqrt[Hz], about 2 orders of magnitude better than requirements. At f≤0.5  mHz we observe a low-frequency tail that stays below 12  fm s^{-2}/sqrt[Hz] down to 0.1 mHz. This performance would allow for a space-based gravitational wave observatory with a sensitivity close to what was originally foreseen for LISA.

Published
2016
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8. New Features of Gravitational Collapse in Anti-de Sitter Spacetimes.

Author

Santos-Oliván D and Sopuerta CF

Abstract

Gravitational collapse of a massless scalar field in spherically symmetric anti-de Sitter (AdS) spacetimes presents a new phenomenology with a series of critical points whose dynamics is discretely self-similar as in the asymptotically flat case. Each critical point is the limit of a branch of scalar field configurations that have bounced off the AdS boundary a fixed number of times before forming an apparent horizon. We present results from a numerical study that focus on the interfaces between branches. We find that there is a mass gap between branches and that subcritical configurations near the critical point form black holes with an apparent horizon mass that follows a power law of the form M(AH)-M(g)∝(p(c)-p)^(ξ), where M(g) is the mass gap and the exponent ξ≃0.7 appears to be universal.

Published
2016
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9. String inspired brane world cosmology.

Author

Germani C and Sopuerta CF

Abstract

We consider brane world scenarios including the leading correction to the Einstein-Hilbert action suggested by superstring theory, the Gauss-Bonnet term. We obtain and study the complete set of equations governing the cosmological dynamics. We find they have the same form as those in Randall-Sundrum scenarios but with time-varying four-dimensional gravitational and cosmological constants. By studying the bulk geometry we show that this variation is produced by bulk curvature terms parametrized by the mass of a black hole. Finally, we show there is a coupling between these curvature terms and matter that can be relevant for early universe cosmology.

Published
2002
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