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30 results on '"Einstein@Home"'

1. Einstein@Home all-sky search for continuous gravitational waves in LIGO O2 public data

Author: Reinhard Prix, B. Machenschalk, S. Walsh, S. Kwang, Heinz-Bernd Eggenstein, Benjamin William Allen, M. A. Papa, Sylvia J. Zhu, B. Steltner, Vladimir Dergachev, and Oliver Behnke
Subjects: High Energy Astrophysical Phenomena (astro-ph.HE), Physics, Einstein@Home, 010308 nuclear & particles physics, Gravitational wave, media_common.quotation_subject, FOS: Physical sciences, Astronomy, Astronomy and Astrophysics, General Relativity and Quantum Cosmology (gr-qc), 01 natural sciences, General Relativity and Quantum Cosmology, LIGO, Neutron star, Space and Planetary Science, Sky, 0103 physical sciences, ddc:520, Astrophysics - High Energy Astrophysical Phenomena, 010303 astronomy & astrophysics, media_common
Abstract: The astrophysical journal 909(1), 79 (2021). doi:10.3847/1538-4357/abc7c9, We conduct an all-sky search for continuous gravitational waves in the LIGO O2 data from the Hanford and Livingston detectors. We search for nearly monochromatic signals with frequency 20.0 Hz �� f �� 585.15 Hz and spin-down Hz s��1. We deploy the search on the Einstein@Home volunteer-computing project and follow-up the waveforms associated with the most significant results with eight further search stages, reaching the best sensitivity ever achieved by an all-sky survey up to 500 Hz. Six of the inspected waveforms pass all the stages but they are all associated with hardware injections, which are fake signals simulated at the LIGO detector for validation purposes. We recover all these fake signals with consistent parameters. No other waveform survives, so we find no evidence of a continuous gravitational wave signal at the detectability level of our search. We constrain the h 0 amplitude of continuous gravitational waves at the detector as a function of the signal frequency, in half-Hz bins. The most constraining upper limit at 163.0 Hz is h 0 = 1.3 �� 10��25, at the 90% confidence level. Our results exclude neutron stars rotating faster than 5 ms with equatorial ellipticities larger than 10��7 closer than 100 pc. These are deformations that neutron star crusts could easily support, according to some models., Published by Univ., Chicago, Ill. [u.a.]
Published: 2021

2. Discovery of a Gamma-Ray Black Widow Pulsar by GPU-accelerated Einstein@Home

Author: Tom Marsh, Roger W. Romani, Fernando Camilo, B. Machenschalk, C. Aulbert, Mallory S. E. Roberts, M. A. Papa, D. Kandel, S. Kwang, Paul S. Ray, Jayanta Roy, H. J. Pletsch, Michael Kramer, Di Li, Elizabeth C. Ferrara, Paulo C. C. Freire, Cees Bassa, Matthew Kerr, Pei Wang, Scott M. Ransom, Banafsheh Beheshtipour, M. B. Mickaliger, L. Nieder, C. J. Clark, S. Sanpa-arsa, Benjamin William Allen, Lucas Guillemot, Rene P. Breton, C. Choquet, Ramesh Karuppusamy, Ewan Barr, Ismaël Cognard, H. Fehrmann, A. Ashok, Bhaswati Bhattacharyya, O. Behnke, V. S. Dhillon, J. Wu, Jason W. T. Hessels, Zhichen Pan, B. Steltner, Ziggy Pleunis, High Energy Astrophys. & Astropart. Phys (API, FNWI), Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (LPC2E), Observatoire des Sciences de l'Univers en région Centre (OSUC), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), Unité Scientifique de la Station de Nançay (USN), Centre National de la Recherche Scientifique (CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers en région Centre (OSUC), and Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Université d'Orléans (UO)
Subjects: Einstein@Home, Physics, High Energy Astrophysical Phenomena (astro-ph.HE), 010504 meteorology & atmospheric sciences, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics, Light curve, Orbital period, 01 natural sciences, Binary pulsar, Neutron star, Pulsar, [SDU]Sciences of the Universe [physics], Space and Planetary Science, Millisecond pulsar, 0103 physical sciences, Astrophysics::Earth and Planetary Astrophysics, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Astrophysics - High Energy Astrophysical Phenomena, 010303 astronomy & astrophysics, 0105 earth and related environmental sciences, Fermi Gamma-ray Space Telescope
Abstract: We report the discovery of 1.97 ms period gamma-ray pulsations from the 75 minute orbital-period binary pulsar now named PSR J1653-0158. The associated Fermi Large Area Telescope gamma-ray source 4FGL J1653.6-0158 has long been expected to harbor a binary millisecond pulsar. Despite the pulsar-like gamma-ray spectrum and candidate optical/X-ray associations -- whose periodic brightness modulations suggested an orbit -- no radio pulsations had been found in many searches. The pulsar was discovered by directly searching the gamma-ray data using the GPU-accelerated Einstein@Home distributed volunteer computing system. The multi-dimensional parameter space was bounded by positional and orbital constraints obtained from the optical counterpart. More sensitive analyses of archival and new radio data using knowledge of the pulsar timing solution yield very stringent upper limits on radio emission. Any radio emission is thus either exceptionally weak, or eclipsed for a large fraction of the time. The pulsar has one of the three lowest inferred surface magnetic-field strengths of any known pulsar with $B_{\rm surf} \approx 4 \times 10^{7}\,$G. The resulting mass function, combined with models of the companion star's optical light curve and spectra, suggests a pulsar mass $\gtrsim 2\,M_{\odot}$. The companion is light-weight with mass $\sim 0.01\,M_{\odot}$, and the orbital period is the shortest known for any rotation-powered binary pulsar. This discovery demonstrates the Fermi Large Area Telescope's potential to discover extreme pulsars that would otherwise remain undetected., Comment: 12 pages, 3 figures, published in ApJL
Published: 2020

3. The Einstein@Home Survey for Gamma-ray Pulsars

Author: C. J. Clark, L. Guillemot, J. Wu, and Holger J. Pletsch
Subjects: Einstein@Home, Physics, Pulsar, Space and Planetary Science, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Instrumentation and Methods for Astrophysics, Gamma ray, Astrophysics::Solar and Stellar Astrophysics, Astronomy and Astrophysics, Astrophysics
Abstract: Since the launch of the Fermi Gamma-ray Space Telescope in 2008, the onboard Large Area Telescope (LAT) has detected gamma-ray pulsations from more than 200 pulsars. A large fraction of these remain undetected in radio observations, and could only be found by directly searching the LAT data for pulsations. However, the sensitivity of such “blind” searches is limited by the sparse photon data and vast computational requirements. In this contribution we present the latest large-scale blind-search survey for gamma-ray pulsars, which ran on the distributed volunteer computing system, Einstein@Home, and discovered 19 new gamma-ray pulsars. We explain how recent improvements to search techniques and LAT data reconstruction have boosted the sensitivity of blind searches, and present highlights from the survey’s discoveries. These include: two glitching pulsars; the youngest known radio-quiet gamma-ray pulsar; and two isolated millisecond pulsars (MSPs), one of which is the only known radio-quiet rotationally powered MSP.
Published: 2017

4. Results from an Einstein@Home search for continuous gravitational waves from Cassiopeia A, Vela Jr. and G347.3

Author: Heinz-Bernd Eggenstein, B. Machenschalk, Reinhard Prix, Yi-Ming Hu, J. Ming, Benjamin William Allen, Christian Beer, Avneet Singh, Sylvia J. Zhu, Oliver Behnke, Maria Alessandra Papa, and Vladimir Dergachev
Subjects: Physics, Einstein@Home, High Energy Astrophysical Phenomena (astro-ph.HE), 010308 nuclear & particles physics, Gravitational wave, FOS: Physical sciences, Target population, Astrophysics, General Relativity and Quantum Cosmology (gr-qc), Vela, 01 natural sciences, General Relativity and Quantum Cosmology, Cassiopeia A, Amplitude, 0103 physical sciences, Sensitivity (control systems), 010306 general physics, Astrophysics - High Energy Astrophysical Phenomena
Abstract: We report results of the most sensitive search to date for periodic gravitational waves from Cassiopeia A, Vela Jr., and G347.3 with frequency between 20 and 1500 Hz. The search was made possible by the computing power provided by the volunteers of the Einstein@Home project and improves on previous results by a factor of 2 across the entire frequency range for all targets. We find no significant signal candidate and set the most stringent upper limits to date on the amplitude of gravitational wave signals from the target population, corresponding to sensitivity depths between 54 $[1/\sqrt{\mathrm{Hz}}]$ and 83 $[1/\sqrt{\mathrm{Hz}}]$, depending on the target and the frequency range. At the frequency of best strain sensitivity, near 172 Hz, we set 90% confidence upper limits on the gravitational wave intrinsic amplitude of ${h}_{0}^{90%}\ensuremath{\approx}{10}^{\ensuremath{-}25}$, probing ellipticity values for Vela Jr. as low as $3\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}8}$, assuming a distance of 200 pc.
Published: 2019

5. Improved post-processing in searches for continuous gravitational waves and a model for transient continuous gravitational wave emission from neutron star glitches

Author: Papa, Maria Alessandra, Singh, Avneet, Papa, Maria Alessandra, and Singh, Avneet
Abstract: (english) Gravitational waves (GW) are tiny oscillations in the fabric of space-time, first hypothesised within the framework of Einstein’s General theory of Relativity (GR) a little more than 100 years ago. The first direct detection of gravitational waves (GW150914) was made on Sept. 14, 2015 by the two LIGO detectors in Hanford and Livingston. In this path-breaking discovery, the first GW observation revealed a coalescence of two black holes in a binary orbit. Besides compact binary systems, isolated rotating neutron stars with physical asymmetries are also expected to emit GW; in this case, the emission is in the form of long lasting nearly monochromatic continuous gravitational waves (CW). In addition to these standard CW, transient-continuous gravitational waves (tCW) are another subset within the category of CW, characterised by their relatively shorter duration timescales. CW and tCW are considered to bear an important and direct association with the internal dynamics of neutron stars, such as their elusive equations of state. Unfortunately, no direct detections of CW have yet been made despite their enormous importance to astrophysics and astronomy. This thesis encompasses several aspects of the science surrounding CW and tCW, such as the source-modeling and the emission mechanisms for tCW, searches for CW, and improvements to the post-processing methods in the deepest searches for CW. In source-modeling, we address the dynamics during the post-glitch relaxation phase of a neutron star and estimate the extent of tCW emission expected to occur via the process of Ekman pumping. We explore multiple GW emission channels, and compare the physical expectation with the current and future detection capabilities of the LIGO detectors. This thesis details the first high-frequency search in LIGO’s fifth science run data, which is one of the very few CW searches targeting the high-frequency bandwidth of the LIGO spectrum. We report no detection and quote the strictest, (deutsch) Gravitationswellen (GW) sind winzige Schwingungen in der Struktur der Raumzeit und wurden erstmals vor etwas mehr als 100 Jahren im Rahmen der Einstein’schen Allgemeinen Relativitätstheorie vorhergesagt. Der erste direkte Nachweis von Gravitationswellen (GW150914) gelang am 14. September 2015 durch die zwei LIGO-Detektoren in Hanford und Livingston. In dieser bahnbrechenden Entdeckung enthüllte die erste Beobachtung von Gravitationswellen eine Verschmelzung zweier einander umkreisender schwarzer Löcher. Abgesehen von kompakten Binärsystemen wird auch von isoliert rotierenden Neutronensternen mit physischer Asymmetrie erwartet, dass diese GW emittieren. In diesem Fall wird die Emission in Form lang anhaltender, fast monochromatischer und kontinuierlicher Gravitationswellen (CW) vorhergesagt. Zusätzlich zu diesen Standard-CW sind flüchtig-kontinuierliche Gravitationswellen (tCW) eine weitere Unterklasse der Klasse der CW und werden charakterisiert durch ihre vergleichsweise kürzere Lebensdauer. CW und tCW werden als wichtige und direkte Verbindung zur internen Dynamik der Neutronensterne wie der schwer fassbaren Zustandsgleichung angesehen. Unglücklicherweise ist bisher trotz der enormen Bedeutung für die Astrophysik und Astronomie noch keine direkte Entdeckung einer CW gelungen. Diese Arbeit umfasst mehrere Aspekte der Wissenschaft um CW and tCW wie die Modellbildung von Quellen und die Emissionsmechanismen von tCW, sowie Suchen nach CW und Verbesserungen der Nachbereitungsmethoden in den empfindlichsten Suchen nach CW. Bei der Modellbildung von Quellen befassen wir uns mit der Dynamik während der Post-Glitch-Erholungsphase eines Neutronensterns und schätzen den Umfang der zu erwartenden tCW-Emission ab, die im Verlauf des Ekman-Pumpens auftritt. Wir untersuchen zahlreiche GW-Emissionskanäle und vergleichen die physikalischen Erwartungen mit dem gegenwärtigen und zukünftigen Nachweisvermögen der LIGO-Detektoren. Diese Arbeit beschreibt detail
Published: 2018

6. Improved post-processing in searches for continuous gravitational waves and a model for transient continuous gravitational wave emission from neutron star glitches

Author: Singh, Avneet and Papa, Maria Alessandra
Subjects: Continuous gravitational waves, Equation of state, Zustandsgleichung, Einstein@Home, Data analysis, Topologie, Topology, neutron stars, Gravitational waves, Datenanalyse, Fluid dynamics, kontinuierliche Gravitationswellen, Neutronensterne, Fluiddynamik, ddc:530, Gravitationswellen, Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik, Algorithmen, LIGO, Algorithms
Abstract: (english) Gravitational waves (GW) are tiny oscillations in the fabric of space-time, first hypothesised within the framework of Einstein’s General theory of Relativity (GR) a little more than 100 years ago. The first direct detection of gravitational waves (GW150914) was made on Sept. 14, 2015 by the two LIGO detectors in Hanford and Livingston. In this path-breaking discovery, the first GW observation revealed a coalescence of two black holes in a binary orbit. Besides compact binary systems, isolated rotating neutron stars with physical asymmetries are also expected to emit GW; in this case, the emission is in the form of long lasting nearly monochromatic continuous gravitational waves (CW). In addition to these standard CW, transient-continuous gravitational waves (tCW) are another subset within the category of CW, characterised by their relatively shorter duration timescales. CW and tCW are considered to bear an important and direct association with the internal dynamics of neutron stars, such as their elusive equations of state. Unfortunately, no direct detections of CW have yet been made despite their enormous importance to astrophysics and astronomy. This thesis encompasses several aspects of the science surrounding CW and tCW, such as the source-modeling and the emission mechanisms for tCW, searches for CW, and improvements to the post-processing methods in the deepest searches for CW. In source-modeling, we address the dynamics during the post-glitch relaxation phase of a neutron star and estimate the extent of tCW emission expected to occur via the process of Ekman pumping. We explore multiple GW emission channels, and compare the physical expectation with the current and future detection capabilities of the LIGO detectors. This thesis details the first high-frequency search in LIGO’s fifth science run data, which is one of the very few CW searches targeting the high-frequency bandwidth of the LIGO spectrum. We report no detection and quote the strictest upper-limits from the fifth science run. We also present a new clustering algorithm aimed at reducing the computational cost of hierarchical multi-stage follow-up search schemes. This new procedure adaptively analyses the topology of the data and offers a novel way to cluster contrasting densities of candidates from broad parameter space grid-based searches. This allows us to lower the threshold and gain sensitivity when operating at a fixed computing budget. Lastly, we describe the procedure for setting the upper-limits on the continuous gravitational wave amplitudes in the latest CW searches on the Einstein@Home volunteer distributed computing project. This procedure is robust in its implementation and details the uncertainty measurement in the final upper-limit statements quoted by the respective searches., (deutsch) Gravitationswellen (GW) sind winzige Schwingungen in der Struktur der Raumzeit und wurden erstmals vor etwas mehr als 100 Jahren im Rahmen der Einstein’schen Allgemeinen Relativitätstheorie vorhergesagt. Der erste direkte Nachweis von Gravitationswellen (GW150914) gelang am 14. September 2015 durch die zwei LIGO-Detektoren in Hanford und Livingston. In dieser bahnbrechenden Entdeckung enthüllte die erste Beobachtung von Gravitationswellen eine Verschmelzung zweier einander umkreisender schwarzer Löcher. Abgesehen von kompakten Binärsystemen wird auch von isoliert rotierenden Neutronensternen mit physischer Asymmetrie erwartet, dass diese GW emittieren. In diesem Fall wird die Emission in Form lang anhaltender, fast monochromatischer und kontinuierlicher Gravitationswellen (CW) vorhergesagt. Zusätzlich zu diesen Standard-CW sind flüchtig-kontinuierliche Gravitationswellen (tCW) eine weitere Unterklasse der Klasse der CW und werden charakterisiert durch ihre vergleichsweise kürzere Lebensdauer. CW und tCW werden als wichtige und direkte Verbindung zur internen Dynamik der Neutronensterne wie der schwer fassbaren Zustandsgleichung angesehen. Unglücklicherweise ist bisher trotz der enormen Bedeutung für die Astrophysik und Astronomie noch keine direkte Entdeckung einer CW gelungen. Diese Arbeit umfasst mehrere Aspekte der Wissenschaft um CW and tCW wie die Modellbildung von Quellen und die Emissionsmechanismen von tCW, sowie Suchen nach CW und Verbesserungen der Nachbereitungsmethoden in den empfindlichsten Suchen nach CW. Bei der Modellbildung von Quellen befassen wir uns mit der Dynamik während der Post-Glitch-Erholungsphase eines Neutronensterns und schätzen den Umfang der zu erwartenden tCW-Emission ab, die im Verlauf des Ekman-Pumpens auftritt. Wir untersuchen zahlreiche GW-Emissionskanäle und vergleichen die physikalischen Erwartungen mit dem gegenwärtigen und zukünftigen Nachweisvermögen der LIGO-Detektoren. Diese Arbeit beschreibt detailliert die erste Hochfrequenz-Suche in den Daten von LIGOs fünftem Beobachtungslauf, welche eine unter sehr wenigen CW-Suchen ist, die auf das Hochfrequenz-Band des LIGO-Spektrums ausgerichtet ist. Wir haben keinen Nachweis erzielt und geben die strengsten Obergrenzen für den fünften Beobachtungslauf an. Auβerdem präsentieren wir einen neuen Gruppierungsalgorithmus, der darauf abzielt Rechenkosten der hierarchischen, mehrstufigen Methoden der Nachbearbeitung zu reduzieren. Dieses neue Verfahren analysiert die Topologie der Daten adaptiv und ermöglicht es sich abhebende Dichten von Kandidaten zu gruppieren, die aus Gitter-basierten Suchen über weite Parameterräume resultieren. Dies erlaubt es uns bei vorgegebenen Rechenkosten die Obergrenzen zu senken und empfindlicher zu werden. Schlieβlich beschreiben wir das Verfahren zur Festlegung von Höchstgrenzen für die Amplituden der CW in den aktuellsten CW-Suchen auf dem verteilten freiwilligen Rechenprojekt Einstein@Home. Das Verfahren ist stabil implementiert und beschreibt die Unsicherheitsmessung in den abschlieβenden Angaben von Höchstgrenzen, die von den jeweiligen Suchen zitiert werden.
Published: 2018

7. Einstein@Home discovers a radio-quiet gamma-ray millisecond pulsar

Author: Clark, Colin J., Pletsch, Holger J., Aulbert, Carsten, Orienti, Monica, Orlando, Elena, Palatiello, Michele, Paliya, Vaidehi S., de Palma, Francesco, Paneque, David, Perkins, Jeremy S., Persic, Massimo, Pesce-Rollins, Melissa, Porter, Troy A., Beer, Christian, Principe, Giacomo, Rainò, Silvia, Rando, Riccardo, Ray, Paul S., Razzano, Massimiliano, Reimer, Anita, Reimer, Olaf, Romani, Roger W., Saz Parkinson, Pablo M., Sgrò, Carmelo, Bock, Oliver, Siskind, Eric J., Smith, David A., Spada, Francesca, Spandre, Gloria, Spinelli, Paolo, Thayer, Jana B., Thompson, David J., Torres, Diego F., Troja, Eleonora, Vianello, Giacomo, Cuéllar, Andres, Wood, Kent, Wood, Matthew, Fermi-LAT Collaboration, Eggenstein, Heinz-Bernd, Fehrmann, Henning, Kramer, Michael, Kwang, Shawn A., Machenschalk, Bernd, Nieder, Lars, Wu, Jason, Ackermann, Markus, Ajello, Marco, Baldini, Luca, Ballet, Jean, Barbiellini, Guido, Bastieri, Denis, Bellazzini, Ronaldo, Bissaldi, Elisabetta, Blandford, Roger D., Bloom, Elliott D., Guillemot, Lucas, Bonino, Raffaella, Bottacini, Eugenio, Brandt, Terri J., Bregeon, Johan, Bruel, Philippe, Buehler, Rolf, Burnett, Toby H., Buson, Sara, Cameron, Rob A., Caputo, Regina, Kerr, Matthew, Caraveo, Patrizia A., Cavazzuti, Elisabetta, Cecchi, Claudia, Charles, Eric, Chekhtman, Alexandre, Ciprini, Stefano, Cominsky, Lynn R., Costantin, Denise, Cutini, Sara, D'Ammando, Filippo, Johnson, Tyrel J., De Luca, Andrea, Desiante, Rachele, Di Venere, Leonardo, Di Mauro, Mattia, Di Lalla, Niccolò, Digel, Seth W., Favuzzi, Cecilia, Ferrara, Elizabeth C., Franckowiak, Anna, Fukazawa, Yasushi, Camilo, Fernando, Funk, Stefan, Fusco, Piergiorgio, Gargano, Fabio, Gasparrini, Dario, Giglietto, Nico, Giordano, Francesco, Giroletti, Marcello, Gomez-Vargas, Germán A., Green, David, Grenier, Isabelle A., Salvetti, David, Guiriec, Sylvain, Harding, Alice K., Hewitt, John W., Horan, Deirdre, Jóhannesson, Guðlaugur, Kensei, Shiki, Kuss, Michael, La Mura, Giovanni, Larsson, Stefan, Latronico, Luca, Allen, Bruce, Li, Jian, Longo, Francesco, Loparco, Francesco, Lovellette, Michael N., Lubrano, Pasquale, Magill, Jeffrey D., Maldera, Simone, Manfreda, Alberto, Mazziotta, Mario N., McEnery, Julie E., Anderson, David, Michelson, Peter F., Mirabal, Nestor, Mitthumsiri, Warit, Mizuno, Tsunefumi, Monzani, Maria Elena, Morselli, Aldo, Moskalenko, Igor V., Nuss, Eric, Ohsugi, Takashi, Omodei, Nicola, Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (LPC2E), Observatoire des Sciences de l'Univers en région Centre (OSUC), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université d'Orléans (UO)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université d'Orléans (UO)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Centre National d’Études Spatiales [Paris] (CNES), Unité Scientifique de la Station de Nançay (USN), Université d'Orléans (UO)-Observatoire des Sciences de l'Univers en région Centre (OSUC), PSL Research University (PSL)-PSL Research University (PSL)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, PSL Research University (PSL)-Centre National de la Recherche Scientifique (CNRS), Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Univers et Particules de Montpellier (LUPM), Université de Montpellier (UM)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Fermi-LAT, Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS), Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), ITA, Centre National de la Recherche Scientifique (CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers en région Centre (OSUC), Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Université d'Orléans (UO), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), PSL Research University (PSL)-PSL Research University (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), Laboratoire de Physique et Chimie de l'Environnement et de l'Espace ( LPC2E ), Centre National de la Recherche Scientifique ( CNRS ) -Université d'Orléans ( UO ) -Institut national des sciences de l'Univers ( INSU - CNRS ), Unité Scientifique de la Station de Nançay ( USN ), Institut national des sciences de l'Univers ( INSU - CNRS ) -Observatoire de Paris-Université d'Orléans ( UO ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire AIM, Université Paris Diderot - Paris 7 ( UPD7 ) -Centre d'Etudes de Saclay, Laboratoire Univers et Particules de Montpellier ( LUPM ), Centre National de la Recherche Scientifique ( CNRS ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Université Montpellier 2 - Sciences et Techniques ( UM2 ) -Université de Montpellier ( UM ), Laboratoire Leprince-Ringuet ( LLR ), Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -École polytechnique ( X ) -Centre National de la Recherche Scientifique ( CNRS ), Centre d'Etudes Nucléaires de Bordeaux Gradignan ( CENBG ), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Centre National de la Recherche Scientifique ( CNRS ), Raunvísindastofnun (HÍ), Science Institute (UI), Verkfræði- og náttúruvísindasvið (HÍ), School of Engineering and Natural Sciences (UI), Háskóli Íslands, University of Iceland, Clark, Colin J., Pletsch, Holger J., Wu, Jason, Guillemot, Luca, Kerr, Matthew, Johnson, Tyrel J., Camilo, Fernando, Salvetti, David, Allen, Bruce, Anderson, David, Aulbert, Carsten, Beer, Christian, Bock, Oliver, Cuéllar, Andre, Eggenstein, Heinz-Bernd, Fehrmann, Henning, Kramer, Michael, Kwang, Shawn A., Machenschalk, Bernd, Nieder, Lar, Ackermann, Marku, Ajello, Marco, Baldini, Luca, Ballet, Jean, Barbiellini, Guido, Bastieri, Deni, Bellazzini, Ronaldo, Bissaldi, Elisabetta, Blandford, Roger D., Bloom, Elliott D., Bonino, Raffaella, Bottacini, Eugenio, Brandt, Terri J., Bregeon, Johan, Bruel, Philippe, Buehler, Rolf, Burnett, Toby H., Buson, Sara, Cameron, Rob A., Caputo, Regina, Caraveo, Patrizia A., Cavazzuti, Elisabetta, Cecchi, Claudia, Charles, Eric, Chekhtman, Alexandre, Ciprini, Stefano, Cominsky, Lynn R., Costantin, Denise, Cutini, Sara, D'Ammando, Filippo, De Luca, Andrea, Desiante, Rachele, Di Venere, Leonardo, Di Mauro, Mattia, Di Lalla, Niccolò, Digel, Seth W., Favuzzi, Cecilia, Ferrara, Elizabeth C., Franckowiak, Anna, Fukazawa, Yasushi, Funk, Stefan, Fusco, Piergiorgio, Gargano, Fabio, Gasparrini, Dario, Giglietto, Nico, Giordano, Francesco, Giroletti, Marcello, Gomez-Vargas, Germán A., Green, David, Grenier, Isabelle A., Guiriec, Sylvain, Harding, Alice K., Hewitt, John W., Horan, Deirdre, Jóhannesson, Guolaugur, Kensei, Shiki, Kuss, Michael, La Mura, Giovanni, Larsson, Stefan, Latronico, Luca, Li, Jian, Longo, Francesco, Loparco, Francesco, Lovellette, Michael N., Lubrano, Pasquale, Magill, Jeffrey D., Maldera, Simone, Manfreda, Alberto, Mazziotta, Mario N., Mcenery, Julie E., Michelson, Peter F., Mirabal, Nestor, Mitthumsiri, Warit, Mizuno, Tsunefumi, Monzani, Maria Elena, Morselli, Aldo, Moskalenko, Igor V., Nuss, Eric, Ohsugi, Takashi, Omodei, Nicola, Orienti, Monica, Orlando, Elena, Palatiello, Michele, Paliya, Vaidehi S., De Palma, Francesco, Paneque, David, Perkins, Jeremy S., Persic, Massimo, Pesce-Rollins, Melissa, Porter, Troy A., Principe, Giacomo, Rainò, Silvia, Rando, Riccardo, Ray, Paul S., Razzano, Massimiliano, Reimer, Anita, Reimer, Olaf, Romani, Roger W., Parkinson, Pablo M. Saz, Sgrò, Carmelo, Siskind, Eric J., Smith, David A., Spada, Francesca, Spandre, Gloria, Spinelli, Paolo, Thayer, Jana B., Thompson, David J., Torres, Diego F., Troja, Eleonora, Vianello, Giacomo, Wood, Kent, and Wood, Matthew
Subjects: Einstein@Home, Gammageislar, [ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph], Astronomy, Astrophysics::High Energy Astrophysical Phenomena, Population, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, law.invention, Telescope, Computer Science::Hardware Architecture, Bulge, Millisecond pulsar, law, 0103 physical sciences, Astrophysics::Solar and Stellar Astrophysics, 010306 general physics, education, 010303 astronomy & astrophysics, Research Articles, Physics, High Energy Astrophysical Phenomena (astro-ph.HE), education.field_of_study, Line-of-sight, Multidisciplinary, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], Nifteindastjörnur, Astrophysics::Instrumentation and Methods for Astrophysics, SciAdv r-articles, Computer Science::Computers and Society, Stjörnusjónaukar, Neutron star, ddc:500, Astrophysics - High Energy Astrophysical Phenomena, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Fermi Gamma-ray Space Telescope, Research Article
Abstract: Millisecond pulsars (MSPs) are old neutron stars that spin hundreds of times per second and appear to pulsate as their emission beams cross our line of sight. To date, radio pulsations have been detected from all rotation-powered MSPs. In an attempt to discover radio-quiet gamma-ray MSPs, we used the aggregated power from the computers of tens of thousands of volunteers participating in the Einstein@Home distributed computing project to search for pulsations from unidentified gamma-ray sources in Fermi Large Area Telescope data. This survey discovered two isolated MSPs, one of which is the only known rotation-powered MSP to remain undetected in radio observations. These gamma-ray MSPs were discovered in completely blind searches without prior constraints from other observations, raising hopes for detecting MSPs from a predicted Galactic bulge population., This work was supported by the Max-Planck-Gesellschaft, the Deutsche Forschungsgemeinschaft through an Emmy Noether Research Grant [no. PL 710/1-1 (H.J.P.)], and NSF award 1104902. C.J.C. acknowledges support from the European Research Council under the European Union’s Horizon 2020 research and innovation programme (grant agreement no. 715051; Spiders). W.M. was partially supported by the Thailand Research Fund (grants TRG5880173 and RTA5980003). M.R. was funded by the Italian Ministry of Education, University and Research (contract no. FIRB-2012-RBFR12PM1F). Work at the Naval Research Laboratory is supported by NASA. The Parkes Observatory is part of the Australia Telescope, funded by the Commonwealth of Australia for operation as a National Facility managed by the Commonwealth Scientific and Industrial Research Organisation (CSIRO). The Fermi LAT Collaboration acknowledges generous ongoing support from a number of agencies and institutes that have supported both the development and the operation of the LAT, as well as scientific data analysis. These include the National Aeronautics and Space Administration and the Department of Energy in the United States, the Commissariat à l’Energie Atomique and the Centre National de la Recherche Scientifique/Institut National de Physique Nucléaire et de Physique des Particules in France; the Agenzia Spaziale Italiana and the Istituto Nazionale di Fisica Nucleare in Italy, the Ministry of Education, Culture, Sports, Science and Technology (MEXT), High Energy Accelerator Research Organization (KEK), and Japan Aerospace Exploration Agency (JAXA) in Japan; and the K. A. Wallenberg Foundation, the Swedish Research Council, and the Swedish National Space Board in Sweden. Additional support for science analysis during the operations phase is gratefully acknowledged from the Istituto Nazionale di Astrofisica in Italy and the Centre National d’Études Spatiales in France. This work performed in part under DOE Contract DE-AC02-76SF00515.
Published: 2018

8. The Einstein@Home Gamma-ray Pulsar Survey. II. Source Selection, Spectral Analysis, and Multiwavelength Follow-up

Author: A. Cuéllar, S. Sanpa-arsa, H. Fehrmann, B. Machenschalk, D. Salvetti, Heinz-Bernd Eggenstein, Holger J. Pletsch, Julia Deneva, Elizabeth C. Ferrara, Bhaswati Bhattacharyya, Ismaël Cognard, Michael Kramer, Fernando Camilo, Scott M. Ransom, Paul S. Ray, C. Aulbert, C. J. Clark, Jingwen Wu, Christian Beer, Matthew Kerr, L. Guillemot, K. S. Wood, O. Bock, Pablo Torne, T. J. Johnson, D. J. Champion, Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (LPC2E), Observatoire des Sciences de l'Univers en région Centre (OSUC), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université d'Orléans (UO)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université d'Orléans (UO)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Centre National d’Études Spatiales [Paris] (CNES), Unité Scientifique de la Station de Nançay (USN), Université d'Orléans (UO)-Observatoire des Sciences de l'Univers en région Centre (OSUC), PSL Research University (PSL)-PSL Research University (PSL)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, PSL Research University (PSL)-Centre National de la Recherche Scientifique (CNRS), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), Centre National de la Recherche Scientifique (CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers en région Centre (OSUC), Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Université d'Orléans (UO), Laboratoire de Physique et Chimie de l'Environnement et de l'Espace ( LPC2E ), Centre National de la Recherche Scientifique ( CNRS ) -Université d'Orléans ( UO ) -Institut national des sciences de l'Univers ( INSU - CNRS ), Unité Scientifique de la Station de Nançay ( USN ), and Institut national des sciences de l'Univers ( INSU - CNRS ) -Observatoire de Paris-Université d'Orléans ( UO ) -Centre National de la Recherche Scientifique ( CNRS )
Subjects: Einstein@Home, [ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph], Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, gamma rays: stars, 01 natural sciences, law.invention, Telescope, individual (PSR J0002+6216, PSR J0631+0646, PSR J1624-4041, PSR J2017+3625) [pulsars], Pulsar, law, 0103 physical sciences, Spectral analysis, 010303 astronomy & astrophysics, High Energy Astrophysical Phenomena (astro-ph.HE), Physics, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], 010308 nuclear & particles physics, Spectral properties, Gamma ray, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy and Astrophysics, stars [gamma rays], pulsars: individual, Space and Planetary Science, Astrophysics - High Energy Astrophysical Phenomena, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Fermi Gamma-ray Space Telescope
Abstract: We report on the analysis of 13 gamma-ray pulsars discovered in the Einstein@Home blind search survey using Fermi Large Area Telescope (LAT) Pass 8 data. The 13 new gamma-ray pulsars were discovered by searching 118 unassociated LAT sources from the third LAT source catalog (3FGL), selected using the Gaussian Mixture Model (GMM) machine learning algorithm on the basis of their gamma-ray emission properties being suggestive of pulsar magnetospheric emission. The new gamma-ray pulsars have pulse profiles and spectral properties similar to those of previously-detected young gamma-ray pulsars. Follow-up radio observations have revealed faint radio pulsations from two of the newly-discovered pulsars, and enabled us to derive upper limits on the radio emission from the others, demonstrating that they are likely radio-quiet gamma-ray pulsars. We also present results from modeling the gamma-ray pulse profiles and radio profiles, if available, using different geometric emission models of pulsars. The high discovery rate of this survey, despite the increasing difficulty of blind pulsar searches in gamma rays, suggests that new systematic surveys such as presented in this article should be continued when new LAT source catalogs become available., Comment: Accepted for publication in ApJ
Published: 2018

9. First low-frequency Einstein@Home all-sky search for continuous gravitational waves in Advanced LIGO data

Author: Abbott, B.P., Abbott, R., Abbott, T.D., Acernese, F., Ackley, K., Adams, C., et al., LIGO Scientific Collaboration, Virgo Collaboration, Abbott, B.P., Abbott, R., Abbott, T.D., Acernese, F., Ackley, K., Adams, C., et al., LIGO Scientific Collaboration, and Virgo Collaboration
Abstract: We report results of a deep all-sky search for periodic gravitational waves from isolated neutron stars in data from the first Advanced LIGO observing run. This search investigates the low frequency range of Advanced LIGO data, between 20 and 100 Hz, much of which was not explored in initial LIGO. The search was made possible by the computing power provided by the volunteers of the Einstein@Home project. We find no significant signal candidate and set the most stringent upper limits to date on the amplitude of gravitational wave signals from the target population, corresponding to a sensitivity depth of 48.7 [1/√Hz]. At the frequency of best strain sensitivity, near 100 Hz, we set 90% confidence upper limits of 1.8×10−25. At the low end of our frequency range, 20 Hz, we achieve upper limits of 3.9×10−24. At 55 Hz we can exclude sources with ellipticities greater than 10−5 within 100 pc of Earth with fiducial value of the principal moment of inertia of 1038 kg m2.
Published: 2017

10. Results of the deepest all-sky survey for continuous gravitational waves on LIGO S6 data running on the Einstein@Home volunteer distributed computing project

Author: L. Kleybolte, A. Perreca, Susan M. Scott, Y. Wang, Daniele Trifirò, Chad Hanna, J. Oberling, Jordan Camp, D. B. Kelley, Heinz-Bernd Eggenstein, M. C. Heintze, T. Hardwick, D. Steinmeyer, Fiodor Sorrentino, F. Carbognani, D. Moraru, Gianpietro Cagnoli, F. Nocera, C. Zhao, Rosa Poggiani, F. Travasso, E. O. Lebigot, Thibaut Jacqmin, M. Merzougui, C. I. Torrie, N. Straniero, Z. Patrick, D. R. Ingram, V. Malvezzi, M. Saleem, H. Fair, Andrea Taracchini, J. V. van Heijningen, Eric Thrane, C. Michel, Sarah Caudill, R. Quitzow-James, R. Day, F. Ohme, V. B. Adya, Christopher P. L. Berry, A. D. Silva, P. J. Sutton, V. Frey, T. B. Edo, Alex B. Nielsen, J. H. Romie, Maximiliano Isi, Lionel Martellini, Peter Fritschel, M. Masso-Reid, S. Qiu, Kazuhiro Agatsuma, Enrico Calloni, G. Traylor, Thomas Corbitt, L. Salconi, C. A. Costa, M. K. Gupta, A. Allocca, F. Vetrano, C. C. Arceneaux, J. M. Gonzalez Castro, B. D. Cheeseboro, Archisman Ghosh, G. Cerretani, A. F. Brooks, G. Gemme, M. Drago, Guenakh Mitselmakher, B. A. Boom, A. M. Sergeev, John A. Clark, Ben Farr, Christophe Collette, Ho-Gyu Lee, Debnandini Mukherjee, G. McIntyre, Leo Singer, G. M. Harry, K. Venkateswara, Yuri Levin, A. Conte, T. A. Callister, N. Kijbunchoo, Reinhard Prix, M. Haney, R. Douglas, F. J. Raab, N. Mukund, L. R. Cominsky, B. L. Pearlstone, V. Fafone, Namjun Kim, Michael E Zucker, S. E. Dwyer, David Keitel, H. S. Cho, Roman Schnabel, T. Isogai, S. Doravari, Carl-Johan Haster, L. Rolland, J. E. Brau, A. A. van Veggel, S. Farinon, A. Pele, Efim A. Khazanov, G. Ballardin, P. Raffai, J. Hanks, D. J. McManus, Kendall Ackley, R. K. Nayak, F. Magaña-Sandoval, A. Staley, S. Jawahar, Matthew Evans, Suvadeep Bose, M. Fays, R. Gouaty, N. Indik, Fabrizio Barone, M. Mohan, N. Man, F. Frasconi, Graham Woan, Robert L. Byer, R. Inta, S. Klimenko, C. Palomba, S. Privitera, M. S. Shahriar, L. Sammut, Lionel London, Peter Aufmuth, Jiayi Qin, A. Singer, Jong H. Chow, B. D. Lackey, A. Di Lieto, S. J. Chamberlin, M. Vasúth, H. J. Jang, K. Haughian, Jade Powell, V. Loriette, T. Huynh-Dinh, Z. Márka, C. M. Reed, R. Robie, Chunglee Kim, Francesco Salemi, T. Sadecki, S. Mirshekari, P. Geng, W. Z. Korth, Jonathan Cripe, V. Mangano, Innocenzo M. Pinto, M. Rakhmanov, Robert Stone, A. Di Virgilio, A. R. Williamson, Lei Zhang, F. Clara, A. Pasqualetti, D. Barta, V. Germain, Marek Szczepanczyk, C. Bradaschia, K. Siellez, J. S. Kissel, J. N. Marx, D. J. Vine, Xing-Jiang Zhu, P. Oppermann, Alberto Vecchio, N. Mazumder, S. Kaufer, S. Grunewald, S. J. Kapadia, Rainer Weiss, Sylvia J. Zhu, Steven Reyes, F. Ricci, László Á. Gergely, Kevin M. Ryan, R. W. P. Drever, M. Boer, J. B. Kanner, M. Korobko, D. Talukder, Sascha Husa, R. Flaminio, J.-P. Coulon, J. S. Areeda, B. J. J. Slagmolen, Meng Wang, D.B. DeBra, D. M. Macleod, Ik Siong Heng, W. W. Johnson, Stuart Reid, G. Valdes, A. Samajdar, S. D'Antonio, Robinjeet Singh, I. W. Harry, M. Yvert, T. D. Abbott, David H. Reitze, Yi-Ming Hu, L. Prokhorov, Y. Setyawati, C. Tomlinson, J. D. Lough, Soma Mukherjee, H. R. Paris, H. J. Bulten, G. D. Meadors, Will M. Farr, G. Greco, S. S. Eikenberry, Tobias Westphal, X. F. Wang, John Miller, T. Prestegard, J. Ming, Riccardo Bassiri, M. Montani, B. L. Swinkels, P. Thomas, P. Weßels, Nancy Aggarwal, Zahoor Ali Khan, David Blair, K. Nedkova, Marc Favata, A. Gennai, Rahul Kumar, Magnus Manske, H. Fehrmann, V. Dolique, A. Chiummo, Erik Katsavounidis, X. Guo, David Jones, R. De Rosa, E. Maros, Bernard F. Schutz, Roger Jones, C. Baune, Li Ju, D. Ugolini, V. J. Roma, M. C. Tringali, A. C. Green, William Yam, L. Wallace, L. Kuo, H. Yamamoto, A. Królak, I. Nardecchia, E. Capocasa, A. Schönbeck, B. Klein, Bala R. Iyer, Odylio D. Aguiar, M. Lormand, P. B. Graff, Fausto Acernese, P. Brockill, Carlos Cepeda, Robert J. McCarthy, A. Glaefke, A. L. Miller, H. S. Chen, T. Dal Canton, J. Warner, K. A. Thorne, A. Sheperd, Luca Gammaitoni, H. Rew, Linqing Wen, Piotr Jaranowski, Florent Robinet, Daniel A. Shaddock, Marco Cavaglia, R. Passaquieti, V. Re, D. D. Brown, Mi Zhang, C. Gray, G. H. Ogin, T. J. Shaffer, Vuk Mandic, László Gondán, J. Prasad, C. Rajan, Vladimir B. Braginsky, Benjamin William Allen, M. Mantovani, R. Frey, Duncan Meacher, Abhirup Ghosh, Karsten Danzmann, Z. Tornasi, Tania Regimbau, S. McCormick, V. Tiwari, S. Brunett, N. A. Gordon, M. Rizzo, Kipp Cannon, V. Predoi, I. W. Martin, M. Steinke, P. Astone, Larne Pekowsky, M. M. Hanke, E. A. Houston, David E. McClelland, G. Vedovato, D. B. Kozak, H. Vahlbruch, K. Riles, G. A. Prodi, R. DeSalvo, H. Middleton, Neil Gehrels, S. Mastrogiovanni, P. J. Veitch, N. van Bakel, Steven Bloemen, Hua Wang, I. Dave, C. V. Kalaghatgi, J. Hanson, M. Punturo, Leopoldo Milano, Slawomir Gras, Yann Bouffanais, O. V. Palashov, Sean T. McWilliams, A. K. Zadrożny, F. Piergiovanni, S. Koley, Chang-Hwan Lee, G. Kang, M. K. M. Bader, G. Wang, W. D. Vousden, A. Brillet, L. Matone, A. Pal-Singh, C. Vorvick, Jonathan R. Gair, V. Kondrashov, B. Shapiro, J. L. Willis, Howard Pan, Arunava Mukherjee, M. Fletcher, B. Hughey, M. Neri, M. van Beuzekom, J. A. Giaime, Matthew Abernathy, M. Weinert, F. Fidecaro, G. M. Guidi, D. Pascucci, L. M. Perri, H. A. G. Gabbard, Kasem Mossavi, S. B. Anderson, Y. M. Kim, Christopher M. Biwer, N. A. Lockerbie, Blake Moore, S. Frasca, Aaron Buikema, M. Factourovich, C. C. Wipf, E. J. King, P. Kumar, B. R. Hall, M. Davier, H. N. Isa, Y. Minenkov, A. Bisht, M. J. Cowart, M. Poe, L. Conti, Evan Ochsner, C. Affeldt, A. J. Weinstein, M. C. Araya, A. Masserot, K. Kawabe, C. Aulbert, R. Cavalieri, Denis Martynov, A. W. Heptonstall, Vivien Raymond, Marco Bazzan, Peter R. Saulson, S. Penn, C. Lazzaro, R. Mittleman, Haocun Yu, Patricia Schmidt, V. Brisson, Guido Mueller, Thomas Dent, L. Trozzo, R. Taylor, A. K. Srivastava, V. Boschi, H. Wittel, Vladimir Dergachev, Stephen Fairhurst, Carl Blair, James Whelan, Nelson Christensen, L. Cerboni Baiardi, S. Mitra, C. C. Yancey, A. Kutynia, L. Pinard, Y.-H. Zhang, M. Landry, A. Bohe, Ruslan Vaulin, Archana Pai, S. M. Aston, R. T. DeRosa, C. Buy, M. Oliver, L. Di Fiore, P. J. King, Michael W. Coughlin, I. Khan, M. Phelps, J. Betzwieser, F. Paoletti, E. G. Thomas, A. Basti, R. Abbott, P. Ruggi, G. L. Mansell, S. E. Gossan, Samaya Nissanke, W. G. Anderson, M. Barsuglia, E. Cesarini, Kieran Craig, Samuele Cortese, Federico Ferrini, G. Vajente, David B. Tanner, A. Mullavey, T. J. N. Nelson, Giacomo Ciani, D. C. Coyne, J. J. Hacker, V. Dattilo, Tejinder Kaur, Xiaohui Fan, Antoine Heidmann, A. Grant, P. G. Murray, S. G. Crowder, J. O'Dell, K. Izumi, M. Turconi, Richard O'Shaughnessy, B. Barr, Terry G. McRae, B. P. Abbott, E. K. Gustafson, Edwin J. Son, J. Worden, F. Jiménez-Forteza, B. K. Berger, Fabien Kéfélian, A. Rüdiger, J. Eichholz, A. Ain, N. M. Brown, J. H. Hough, Andreas Freise, Vincenzo Pierro, J. R. Palamos, J. Birch, B. Mours, Michael Thomas, D. Töyrä, Rana X. Adhikari, H. Overmier, Avneet Singh, Paul D. Lasky, David Murphy, Stefan Hild, Y. Ma, C. C. Buchanan, S. Ascenzi, S. Vass, Francesco Pannarale, Alessandro Bertolini, Douglas R. Cook, Michele Zanolin, D. Schuette, E. Coccia, C. Graef, B. A. Weaver, T. J. Massinger, T. Vo, J. G. Rollins, B. Machenschalk, R. Coyne, Joey Shapiro Key, A. Rocchi, P. Popolizio, Koji Arai, J. R. Sanders, Matthew Pitkin, L.-W. Wei, Roland Schilling, Fabrice Matichard, R. Birney, F. Donovan, Adam A. Libson, J. E. Broida, Sebastien Biscans, J. C. Driggers, Charlotte Bond, S. A. Usman, G. D. Hammond, E. J. Sanchez, W. Kells, Swetha Bhagwat, L. Jian, A. Effler, R. Kennedy, S. P. Tarabrin, D. Sellers, D. Huet, D. Passuello, S. H. Huttner, J. Schmidt, J. C. Barayoga, Laleh Sadeghian, M. Granata, Roy Williams, Mairi Sakellariadou, G. Pillant, S. B. Coughlin, M. Vardaro, J. Meidam, R. L. Savage, A. S. Bell, A. L. Lombardi, P. T. Baker, V. P. Mitrofanov, Minchuan Zhou, F. Cleva, Andrew Melatos, M. Lorenzini, P. A. 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D., Frasca, S., Frasconi, F., Frei, Z., Freise, A., Frey, R., Frey, V., Fritschel, P., Frolov, V. .v., Fulda, P., Fyffe, M., Gabbard, H. .a. .g., Gair, J. .r., Gammaitoni, L., Gaonkar, S. .g., Garufi, F., Gaur, G., Gehrels, N., Gemme, G., Geng, P., Genin, E., Gennai, A., George, J., Gergely, L., Germain, V., Ghosh, Abhirup, Ghosh, Archisman, Ghosh, S., Giaime, J. .a., Giardina, K. .d., Giazotto, A., Gill, K., Glaefke, A., Goetz, E., Goetz, R., Gondan, L., González, G., Gonzalez Castro, J. .m., Gopakumar, A., Gordon, N. .a., Gorodetsky, M. .l., Gossan, S. .e., Gosselin, M., Gouaty, R., Grado, A., Graef, C., Graff, P. .b., Granata, M., Grant, A., Gras, S., Gray, C., GRECO, GIUSEPPE, Green, A. .c., Groot, P., Grote, H., Grunewald, S., GUIDI, GIANLUCA MARIA, Guo, X., Gupta, A., Gupta, M. .k., Gushwa, K. .e., Gustafson, E. .k., Gustafson, R., Hacker, J. .j., Hall, B. .r., Hall, E. .d., Hammond, G., Haney, M., Hanke, M. .m., Hanks, J., Hanna, C., Hanson, J., Hardwick, T., HARMS, JAN, Harry, G. .m., Harry, I. .w., Hart, M. .j., Hartman, M. .t., Haster, C. J., Haughian, K., Heidmann, A., Heintze, M. .c., Heitmann, H., Hello, P., Hemming, G., Hendry, M., Heng, I. .s., Hennig, J., Henry, J., Heptonstall, A. .w., Heurs, M., Hild, S., Hoak, D., Hofman, D., Holt, K., Holz, D. .e., Hopkins, P., Hough, J., Houston, E. .a., Howell, E. .j., Hu, Y. .m., Huang, S., Huerta, E. .a., Huet, D., Hughey, B., Husa, S., Huttner, S. .h., Huynh Dinh, T., Indik, N., Ingram, D. .r., Inta, R., Isa, H. .n., Isac, J. 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Subjects: Einstein@Home, Nuclear and High Energy Physics, [PHYS.ASTR.IM]Physics [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], gr-qc, media_common.quotation_subject, Distributed computing, Astronomy, FOS: Physical sciences, S6, Astrophysics, General Relativity and Quantum Cosmology (gr-qc), 01 natural sciences, General Relativity and Quantum Cosmology, [ PHYS.GRQC ] Physics [physics]/General Relativity and Quantum Cosmology [gr-qc], 0103 physical sciences, Range (statistics), Sensitivity (control systems), LIGO, 010306 general physics, Hardware_REGISTER-TRANSFER-LEVELIMPLEMENTATION, Instrumentation and Methods for Astrophysics (astro-ph.IM), STFC, QC, media_common, QB, Physics, Gravitational Waves, 010308 nuclear & particles physics, Gravitational wave, Physique, RCUK, Einstein@Home, LIGO, S6, Gravitational Waves, Neutron star, Amplitude, Physics and Astronomy, Sky, [PHYS.GRQC]Physics [physics]/General Relativity and Quantum Cosmology [gr-qc], [ PHYS.ASTR.IM ] Physics [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], Astrophysics - Instrumentation and Methods for Astrophysics, astro-ph.IM
Abstract: We report results of a deep all-sky search for periodic gravitational waves from isolated neutron stars in data from the S6 LIGO science run. The search was possible thanks to the computing power provided by the volunteers of the Einstein@Home distributed computing project. We find no significant signal candidate and set the most stringent upper limits to date on the amplitude of gravitational wave signals from the target population. At the frequency of best strain sensitivity, between 170.5 and 171 Hz we set a 90% confidence upper limit of 5.5×10^{-25}, while at the high end of our frequency range, around 505 Hz, we achieve upper limits ≃10^{-24}. At 230 Hz we can exclude sources with ellipticities greater than 10^{-6} within 100 pc of Earth with fiducial value of the principal moment of inertia of 10^{38} kg m^{2}. If we assume a higher (lower) gravitational wave spin-down we constrain farther (closer) objects to higher (lower) ellipticities., National Science Foundation (U.S.), United States. National Aeronautics and Space Administration, Carnegie Trust, Leverhulme Trust, David & Lucile Packard Foundation, Research Corporation, Alfred P. Sloan Foundation
Published: 2016

11. Einstein@Home Discovery of a Double Neutron Star Binary in the PALFA Survey

Author: Jason W. T. Hessels, J. M. Cordes, Adam Brazier, Paulo C. C. Freire, Fredrick A. Jenet, Slavko Bogdanov, H. Fehrmann, Benjamin William Allen, Wei Zhu, C. Karako-Argaman, Robert D. Ferdman, J. van Leeuwen, B. Machenschalk, O. Bock, Ryan Lynch, Xavier Siemens, C. Aulbert, P. Lazarus, E. Madsen, Heinz-Bernd Eggenstein, Ingrid H. Stairs, Joseph K. Swiggum, Paul Scholz, V. M. Kaspi, Maura McLaughlin, Fernando Camilo, C. Patel, A. Venkataraman, Fronefield Crawford, Shami Chatterjee, Kevin Stovall, Laura Spitler, Scott M. Ransom, Benjamin Knispel, Andrew Seymour, F. Cardoso, Julia Deneva, and High Energy Astrophys. & Astropart. Phys (API, FNWI)
Subjects: Einstein@Home, General relativity, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, General Relativity and Quantum Cosmology (gr-qc), Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, 01 natural sciences, General Relativity and Quantum Cosmology, Gravitation, Pulsar, 0103 physical sciences, Astrophysics::Solar and Stellar Astrophysics, 010303 astronomy & astrophysics, Solar and Stellar Astrophysics (astro-ph.SR), Astrophysics::Galaxy Astrophysics, High Energy Astrophysical Phenomena (astro-ph.HE), Physics, 010308 nuclear & particles physics, Gravitational wave, Astronomy and Astrophysics, Neutron star, Stars, Supernova, Astrophysics - Solar and Stellar Astrophysics, Space and Planetary Science, Astrophysics::Earth and Planetary Astrophysics, Astrophysics - High Energy Astrophysical Phenomena
Abstract: We report here the Einstein@Home discovery of PSR J1913+1102, a 27.3-ms pulsar found in data from the ongoing Arecibo PALFA pulsar survey. The pulsar is in a 4.95-hr double neutron star (DNS) system with an eccentricity of 0.089. From radio timing with the Arecibo 305-m telescope, we measure the rate of advance of periastron to be 5.632(18) deg/yr. Assuming general relativity accurately models the orbital motion, this corresponds to a total system mass of 2.875(14) solar masses, similar to the mass of the most massive DNS known to date, B1913+16, but with a much smaller eccentricity. The small eccentricity indicates that the second-formed neutron star (the companion of PSR J1913+1102) was born in a supernova with a very small associated kick and mass loss. In that case this companion is likely, by analogy with other systems, to be a light (1.2 solar mass) neutron star; the system would then be highly asymmetric. A search for radio pulsations from the companion yielded no plausible detections, so we can't yet confirm this mass asymmetry. By the end of 2016, timing observations should permit the detection of two additional post-Keplerian parameters: the Einstein delay, which will enable precise mass measurements and a verification of the possible mass asymmetry of the system, and the orbital decay due to the emission of gravitational waves, which will allow another test of the radiative properties of gravity. The latter effect will cause the system to coalesce in ~0.5 Gyr., 20 pages in referee format, 3 figures, 2 tables, Accepted for publication in the Astrophysical Journal
Published: 2016

12. Hierarchical follow-up of subthreshold candidates of an all-sky Einstein@Home search for continuous gravitational waves on LIGO sixth science run data

Author: Irene Di Palma, O. Bock, Xavier Siemens, S. Walsh, B. Machenschalk, Bernard F. Schutz, Maria Alessandra Papa, Avneet Singh, Reinhard Prix, P. Astone, T. D. Creighton, Sylvia J. Zhu, Benjamin William Allen, David Keitel, and Heinz-Bernd Eggenstein
Subjects: Physics, Einstein@Home, 010308 nuclear & particles physics, Gravitational wave, Subthreshold conduction, media_common.quotation_subject, FOS: Physical sciences, General Relativity and Quantum Cosmology (gr-qc), Astrophysics, Target population, 01 natural sciences, General Relativity and Quantum Cosmology, LIGO, Neutron star, Amplitude, Sky, 0103 physical sciences, Einstein, ddc:530, Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik, Astrophysics - Instrumentation and Methods for Astrophysics, 010306 general physics, Instrumentation and Methods for Astrophysics (astro-ph.IM), media_common
Abstract: We report results of an all-sky search for periodic gravitational waves with frequency between 50 and 510 Hz from isolated compact objects, i.e. neutron stars. A new hierarchical multi-stage approach is taken, supported by the computing power of the Einstein@Home project, allowing to probe more deeply than ever before. 16 million sub-threshold candidates from the initial search [LVC,arXiv:1606.09619] are followed up in three stages. None of those candidates is consistent with an isolated gravitational wave emitter, and 90% confidence level upper limits are placed on the amplitudes of continuous waves from the target population. Between 170.5 and 171 Hz we set the most constraining 90% confidence upper limit on the strain amplitude h0 at 4.3x10-25 , while at the high end of our frequency range we achieve an upper limit of 7.6x10-25. These are the most constraining all-sky upper limits to date and constrain the ellipticity of rotating compact objects emitting at 300 Hz at a distance D to less than 6x10-7 [d/100pc]., 14 pages, 11 figures, extensive tables in the appendixes on pages 10-13
Published: 2016

13. Einstein@Home search for continuous gravitational waves from Cassiopeia A

Author: Xavier Siemens, B. Machenschalk, Heinz-Bernd Eggenstein, Benjamin William Allen, M. Shaltev, O. Bock, David Keitel, Badri Krishnan, Reinhard Prix, Sylvia J. Zhu, K. Wette, and Maria Alessandra Papa
Subjects: Einstein@Home, Beat (acoustics), FOS: Physical sciences, Astrophysics, General Relativity and Quantum Cosmology (gr-qc), Compact star, 01 natural sciences, General Relativity and Quantum Cosmology, 0103 physical sciences, ddc:530, LIGO, Supernova remnant, 010303 astronomy & astrophysics, Instrumentation and Methods for Astrophysics (astro-ph.IM), gravitational-wave, Physics, High Energy Astrophysical Phenomena (astro-ph.HE), Gravitationswelle, Cas A, 010308 nuclear & particles physics, Gravitational wave, Astronomy, Cassiopeia A, Amplitude, Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik, Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract: We report the results of a directed search for continuous gravitational-wave emission in a broad frequency range (between 50 and 1000 Hz) from the central compact object of the supernova remnant Cassiopeia A (Cas A). The data comes from the sixth science run of LIGO and the search is performed on the volunteer distributed computing network Einstein@Home. We find no significant signal candidate, and set the most constraining upper limits to date on the gravitational-wave emission from Cas A, which beat the indirect age-based upper limit across the entire search range. At around 170 Hz (the most sensitive frequency range), we set 90% confidence upper limits on the gravitational wave amplitude $h_0$ of $\sim\!\!~2.9\times 10^{-25}$, roughly twice as constraining as the upper limits from previous searches on Cas A. The upper limits can also be expressed as constraints on the ellipticity of Cas A; with a few reasonable assumptions, we show that at gravitational-wave frequencies greater than 300~Hz, we can exclude an ellipticity of $\gtrsim\!\!~10^{-5}$., Comment: 29 pages, 7 figures, 3 tables
Published: 2016

14. Results of the deepest all-sky survey for continuous gravitational waves on LIGO S6 data running on the Einstein@Home volunteer distributed computing project

Author: Abbott, B.P., Abbott, R., Abbott, T.D., Abernathy, M.R., Acernese, F., LIGO Scientific Collaboration, and Virgo Collaboration
Subjects: Gravitationswelle, LIGO gravitational wave network, gravitational waves, Einstein@Home, ddc:530, Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik
Abstract: We report results of a deep all-sky search for periodic gravitational waves from isolated neutron stars in data from the S6 LIGO science run. The search was possible thanks to the computing power provided by the volunteers of the Einstein@Home distributed computing project. We find no significant signal candidate and set the most stringent upper limits to date on the amplitude of gravitational wave signals from the target population. At the frequency of best strain sensitivity, between 170.5 and 171 Hz we set a 90% confidence upper limit of 5.5×10-25, while at the high end of our frequency range, around 505 Hz, we achieve upper limits ≃10-24. At 230 Hz we can exclude sources with ellipticities greater than 10-6 within 100 pc of Earth with fiducial value of the principal moment of inertia of 1038 kg m2. If we assume a higher (lower) gravitational wave spin-down we constrain farther (closer) objects to higher (lower) ellipticities. © 2016 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the http://creativecommons.org/licenses/by/3.0/ Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
Published: 2016
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15. Results of an all-sky high-frequency Einstein@Home search for continuous gravitational waves in LIGO's fifth science run

Author: Holger J. Pletsch, Xavier Siemens, Reinhard Prix, O. Bock, Maria Alessandra Papa, Avneet Singh, Benjamin William Allen, Sylvia J. Zhu, Bernd Maschenchalk, and Heinz-Bernd Eggenstein
Subjects: Einstein@Home, Star (game theory), media_common.quotation_subject, FOS: Physical sciences, General Relativity and Quantum Cosmology (gr-qc), Astrophysics, Rotation, 01 natural sciences, General Relativity and Quantum Cosmology, 0103 physical sciences, ddc:530, LIGO, Instrumentation and Methods for Astrophysics (astro-ph.IM), 010303 astronomy & astrophysics, media_common, High Energy Astrophysical Phenomena (astro-ph.HE), Physics, Gravitationswelle, 010308 nuclear & particles physics, Gravitational wave, Amplitude, gravitational waves, Sky, Moment (physics), Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik, Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract: We present results of a high-frequency all-sky search for continuous gravitational waves from isolated compact objects in LIGO's 5th Science Run (S5) data, using the computing power of the Einstein@Home volunteer computing project. This is the only dedicated continuous gravitational wave search that probes this high frequency range on S5 data. We find no significant candidate signal, so we set 90%-confidence level upper-limits on continuous gravitational wave strain amplitudes. At the lower end of the search frequency range, around 1250 Hz, the most constraining upper-limit is $5.0\times 10^{-24}$, while at the higher end, around 1500 Hz, it is $6.2\times 10^{-24}$. Based on these upper-limits, and assuming a fiducial value of the principal moment of inertia of $10^{38}$kg$\,$m$^2$, we can exclude objects with ellipticities higher than roughly $2.8\times10^{-7}$ within 100 pc of Earth with rotation periods between 1.3 and 1.6 milliseconds., 13 pages, 10 figures, 5 tables; v1: initial submission; v2: internal review; v3-4: journal review; v5: copyedited version; v6-7 (final): updated references and minor typos corrected
Published: 2016
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16. Results of the Deepest All-Sky Survey for Continuous Gravitational Waves on LIGO S6 Data Running on the Einstein@Home Volunteer Distributed Computing Project

Author: 1388603, Abbott, B. P., Gill, K., Hughey, B., Szczepańczyk, M. J., Zanolin, Michele, al., et, 1388603, Abbott, B. P., Gill, K., Hughey, B., Szczepańczyk, M. J., Zanolin, Michele, and al., et
Abstract: We report results of a deep all-sky search for periodic gravitational waves from isolated neutron stars in data from the S6 LIGO science run. The search was possible thanks to the computing power provided by the volunteers of the Einstein@Home distributed computing project.
Published: 2016

17. An Exploration of CUDA and CBEA for a Gravitational Wave Data- Analysis Application (Einstein@Home)

Author: Gaurav Khanna and Jens Breitbart
Subjects: Physics, Einstein@Home, 010308 nuclear & particles physics, Gravitational wave, business.industry, FOS: Physical sciences, General Relativity and Quantum Cosmology (gr-qc), Computational Physics (physics.comp-ph), 01 natural sciences, General Relativity and Quantum Cosmology, Computational science, CUDA, Software, 0103 physical sciences, business, 010303 astronomy & astrophysics, Physics - Computational Physics
Abstract: We present a detailed approach for making use of two new computer hardware architectures -- CBEA and CUDA -- for accelerating a scientific data-analysis application (Einstein@Home). Our results suggest that both the architectures suit the application quite well and the achievable performance in the same software developmental time-frame, is nearly identical., Accepted for publication in International Conference on Parallel Processing and Applied Mathematics (PPAM 2009)
Published: 2009

18. Einstein@Home Discovery of a PALFA Millisecond Pulsar in an Eccentric Binary Orbit

Author: J. van Leeuwen, A. Brazier, H.-B. Eggenstein, C. Aulbert, Benjamin Knispel, Fredrick A. Jenet, Fernando Camilo, Benjamin William Allen, Ingrid H. Stairs, Paul Scholz, O. Bock, Maura McLaughlin, Scott M. Ransom, Jason W. T. Hessels, J. M. Cordes, Duncan R. Lorimer, A. Venkataraman, C. Patel, Paulo C. C. Freire, Slavko Bogdanov, Laura Spitler, E. C. Madsen, C. Karako-Argaman, Weiwei Zhu, Ben Stappers, Andrew Lyne, Robert Wharton, V. M. Kaspi, Fronefield Crawford, F. Cardoso, Shami Chatterjee, Kevin Stovall, Julia Deneva, H. Fehrmann, Joseph K. Swiggum, P. Lazarus, B. Machenschalk, X. Siemens, R. S. Lynch, Robert D. Ferdman, and High Energy Astrophys. & Astropart. Phys (API, FNWI)
Subjects: Physics, Einstein@Home, High Energy Astrophysical Phenomena (astro-ph.HE), education.field_of_study, Proper motion, Astrophysics::High Energy Astrophysical Phenomena, Population, White dwarf, FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics, General Relativity and Quantum Cosmology (gr-qc), Astrophysics::Cosmology and Extragalactic Astrophysics, General Relativity and Quantum Cosmology, Neutron star, Pulsar, 13. Climate action, Space and Planetary Science, Millisecond pulsar, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics, Circumbinary planet, Astrophysics - High Energy Astrophysical Phenomena, education, Astrophysics::Galaxy Astrophysics
Abstract: We report the discovery of the millisecond pulsar (MSP) PSR J1950+2414 ($P=4.3$ ms) in a binary system with an eccentric ($e=0.08$) 22-day orbit in Pulsar ALFA survey observations with the Arecibo telescope. Its companion star has a median mass of 0.3 $M_\odot$ and is most likely a white dwarf. Fully recycled MSPs like this one are thought to be old neutron stars spun-up by mass transfer from a companion star. This process should circularize the orbit, as is observed for the vast majority of binary MSPs, which predominantly have orbital eccentricities $e < 0.001$. However, four recently discovered binary MSPs have orbits with $0.027 < e < 0.44$; PSR J1950+2414 is the fifth such system to be discovered. The upper limits for its intrinsic spin period derivative and inferred surface magnetic field strength are comparable to those of the general MSP population. The large eccentricities are incompatible with the predictions of the standard recycling scenario: something unusual happened during their evolution. Proposed scenarios are a) initial evolution of the pulsar in a triple system which became dynamically unstable, b) origin in an exchange encounter in an environment with high stellar density, c) rotationally delayed accretion-induced collapse of a super-Chandrasekhar white dwarf, and d) dynamical interaction of the binary with a circumbinary disk. We compare the properties of all five known eccentric MSPs with the predictions of these formation channels. Future measurements of the masses and proper motion might allow us to firmly exclude some of the proposed formation scenarios., 9 pages, 2 figures, 2 tables; accepted for publication in The Astrophysical Journal
Published: 2015

19. THE EINSTEIN@HOME GAMMA-RAY PULSAR SURVEY. I. SEARCH METHODS, SENSITIVITY, AND DISCOVERY OF NEW YOUNG GAMMA-RAY PULSARS

Author: A. Cuéllar, C. Beer, Jingwen Wu, C. Aulbert, Michael Kramer, H. Fehrmann, C. J. Clark, Benjamin William Allen, H. J. Pletsch, Lucas Guillemot, H.-B. Eggenstein, O. Bock, B. Machenschalk, L. Nieder, Leibniz Universität Hannover [Hannover] (LUH), Max-Planck-Institut für Gravitationsphysik ( Albert-Einstein-Institut ) (AEI), Max-Planck-Gesellschaft, Max-Planck-Institut für Radioastronomie (MPIFR), Unité Scientifique de la Station de Nançay (USN), Centre National de la Recherche Scientifique (CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers en région Centre (OSUC), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Université d'Orléans (UO), Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (LPC2E), Observatoire des Sciences de l'Univers en région Centre (OSUC), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), Jodrell Bank Centre for Astrophysics, and University of Manchester [Manchester]
Subjects: Einstein@Home, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Astrophysics, 01 natural sciences, stars [gamma-rays], Pulsar, PSR J1350−6225, 0103 physical sciences, 010306 general physics, Supernova remnant, 010303 astronomy & astrophysics, High Energy Astrophysical Phenomena (astro-ph.HE), PSR J1057−5851, Physics, gamma rays: stars — pulsars: individual (PSR J0359+5414, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], Center (category theory), Gamma ray, Astronomy and Astrophysics, individual (PSR J0359+5414, PSR J1057-5851, PSR J1350-6225, PSR J1827-1446, PSR J1844-0346) [pulsars], PSR J1827−1446, Neutron star, Space and Planetary Science, PSR J1844−0346), Glitch (astronomy), Astrophysics - High Energy Astrophysical Phenomena, Fermi Gamma-ray Space Telescope
Abstract: We report on the results of a recent blind search survey for gamma-ray pulsars in Fermi Large Area Telescope (LAT) data being carried out on the distributed volunteer computing system, Einstein@Home. The survey has searched for pulsations in 118 unidentified pulsar-like sources, requiring about 10,000 years of CPU core time. In total, this survey has resulted in the discovery of 17 new gamma-ray pulsars, of which 13 are newly reported in this work, and an accompanying paper. These pulsars are all young, isolated pulsars with characteristic ages between 12 kyr and 2 Myr, and spin-down powers between $10^{34}$ and $4\times10^{36}$ erg/s. Two of these are the slowest spinning gamma-ray pulsars yet known. One pulsar experienced a very large glitch $\Delta f/f \approx 3.5\times10^{-6}$ during the Fermi mission. In this, the first of two associated papers, we describe the search scheme used in this survey, and estimate the sensitivity of our search to pulsations in unidentified Fermi-LAT sources. One such estimate results in an upper limit of 57% for the fraction of pulsed emission from the gamma-ray source associated with the Cas A supernova remnant, constraining the pulsed gamma-ray photon flux that can be produced by the neutron star at its center. We also present the results of precise timing analyses for each of the newly detected pulsars., Comment: 23 pages, 11 figures, accepted for publication in ApJ
Published: 2017

20. Fully coherent follow-up of continuous gravitational-wave candidates: An application to Einstein@Home results

Author: Maria Alessandra Papa, P. Leaci, M. Shaltev, and Reinhard Prix
Subjects: Einstein@Home, Physics, Nuclear and High Energy Physics, Gravitational wave, Pipeline (computing), FOS: Physical sciences, General Relativity and Quantum Cosmology (gr-qc), General Relativity and Quantum Cosmology, symbols.namesake, Robustness (computer science), Gaussian noise, Outlier, symbols, Zoom, Algorithm
Abstract: We characterize and present the details of the follow-up method used on the most significant outliers of the Hough Einstein@Home all-sky search for continuous gravitational waves arXiv:1207.7176. This follow-up method is based on the two-stage approach introduced in arXiv:1303.2471, consisting of a semicoherent refinement followed by a fully coherent zoom. We quantify the efficiency of the follow-up pipeline using simulated signals in Gaussian noise. This pipeline does not search beyond first-order frequency spindown, and therefore we also evaluate its robustness against second-order spindown. We present the details of the Hough Einstein@Home follow-up (arXiv:1207.7176) on three hardware-injected signals and on the 8 most significant outliers of unknown origin., Comment: 8 pages, 3 figures, 3 tables
Published: 2014

21. Einstein@Home all-sky search for periodic gravitational waves in LIGO S5 data

Author: R. L. Ward, N. Letendre, A. Langley, S. Penn, P. J. Sutton, F. Paoletti, J. H. Romie, G. Kuehn, L. Cunningham, F. J. Raab, R. Cavalieri, P. Ruggi, Laura Cadonati, Benjamin Aylott, G. Kang, M. Jacobson, R. Gustafson, Michael L. Gorodetsky, T. Westphal, J. Franc, S. Giampanis, M. Di Paolo Emilio, E. Tournefier, A. Basti, S. E. Strigin, J.-P. Coulon, Jens Birch, Z. Frei, N. D. Smith-Lefebvre, V. Dattilo, Stefan Hild, H. Müller-Ebhardt, A. Brillet, K. Kaufman, Susan M. Scott, Teviet Creighton, M. Born, K. Mailand, Hyun-Chul Kim, R. Mittleman, Nelson Christensen, C. T. Y. Chung, Michael E Zucker, J. Zweizig, David H. Shoemaker, Holger J. Pletsch, D. Verkindt, M. V. Plissi, C. Griffo, Richard O'Shaughnessy, B. Barr, Malik Rakhmanov, J. Worden, L. Williams, D. Ugolini, J.-D. Fournier, Sebastian Steinlechner, Chad Hanna, C. Wilkinson, M. Lormand, Kipp Cannon, R. S. Ottens, M. T. Hartman, V. Kringel, I. Di Palma, B. Behnke, V. Necula, R. Paoletti, I. Santiago-Prieto, Hartmut Grote, R. Passaquieti, M. Branchesi, G. Losurdo, J. C. Batch, K. A. Hodge, Jong H. Chow, A. Pasqualetti, J. Macarthur, M. Tse, D. M. Macleod, Riccardo Sturani, K. Venkateswara, E. Forsi, S. Braccini, V. Litvine, T. Bhadbade, G. Cagnoli, S. Chung, M. E. Normandin, Zoltán Keresztes, E. Jesse, R. Riesen, V. V. Frolov, Neil J. Cornish, P. E. Lindquist, G. A. Prodi, Alexander Wanner, Rahul Biswas, I. Fiori, Mirko Prato, F. Robinet, C. J. Bell, Robert Stone, A. Di Virgilio, D. Amariutei, F. Nocera, D. J. White, C. Zhao, Alicia M. Sintes, C. Poux, D. Fazi, F. Piergiovanni, S. H. Huttner, D. Atkinson, L. Palladino, N. Zotov, K. Mason, Sanjeev Dhurandhar, Andrew Melatos, Elena Cesarini, M. Pihlaja, Tomasz Bulik, P. G. Murray, M. Lorenzini, A. Masserot, J. H. Hough, B. Bouhou, Douglas R. Cook, Michele Zanolin, V. Kalogera, B. L. Swinkels, C. Graef, Timothy A Welborn, E. Amador Ceron, Xin Chen, R. M. Martin, M. Prijatelj, Xavier Siemens, Roy Williams, D. H. Reitze, L. Taffarello, G. Gelencser, M. Davier, A. Conte, A. Viceré, Yi Chen, Ilya Belopolski, A. Di Lieto, M. Vasúth, S. Márka, A. Mytidis, N. Beveridge, M. Blom, T. Regimbau, C. I. Torrie, S. P. Tarabrin, J. C. Barayoga, Richard J. Abbott, D. R. Ingram, Phil Willems, Stanislav Babak, Kenneth A. Strain, Jordan Camp, D. Feldbaum, T. Meier, P. Puppo, S. Sankar, Marco Aurelio Diaz, C. Bogan, François Bondu, V. Malvezzi, Fabio Marchesoni, P. Hello, Charlotte Bond, G. D. Hammond, B. J. J. Slagmolen, Hee-Suk Cho, Chiara M. F. Mingarelli, A. M. Cruise, R. L. Savage, A. S. Bell, S. Vitale, Grant David Meadors, T. Isogai, Tenglin Li, Stefan Goßler, I. Kowalska, Atsushi J. Nishizawa, H. J. Bulten, Seiji Kawamura, Reinhard Prix, Elizabeth Harstad, A. F. Brooks, Y. Wan, Duncan A. Brown, N. A. Robertson, C. N. Colacino, W. Chen, D. Hammer, Kyungmin Kim, Y. J. Jang, F. Travasso, Michał Bejger, B. O'Reilly, F. Y. Khalili, G. Mazzolo, V. Lhuillier, Walter Winkler, A. S. Markosyan, T. T. Fricke, Harald Lück, Paul Fulda, M. Britzger, Ilya Mandel, E. Macdonald, I. Maksimovic, J. Marque, B. K. Kim, Richard A. Matzner, Eric Thrane, G. McIntyre, Leo Singer, Riccardo Bassiri, E. Maros, A. E. Villar, Roberto Conte, Nergis Mavalvala, J. Aasi, Masa-Katsu Fujimoto, M. Shaltev, D. S. Rabeling, Vuk Mandic, Eric Oelker, Yi Pan, Peter Aufmuth, A. Singer, M. A. Barton, Carl L. Rodriguez, Sascha Husa, Eric W. James, F. Garufi, L. Rolland, Fabrizio Barone, M. Mohan, D. Rosińska, Jerome Degallaix, Rana X. Adhikari, Jordi Burguet-Castell, J. P. Zendri, A. Allocca, H. Yamamoto, C. Michel, C. Aulbert, Sarah Caudill, D. Simakov, Scott Koranda, R. Quitzow-James, R. Day, L. Matone, Gregory M. Harry, R. G. Oldenberg, Sunil Susmithan, N. Man, J. Heefner, Rocco Romano, A. Effler, T. Accadia, K. Haughian, B. Daudert, John A. Clark, Ben Farr, J. N. Marx, László Á. Gergely, V. Re, Ho-Gyu Lee, Kevin M. Ryan, Piotr Jaranowski, Matthew Evans, A. Gennai, Badri Krishnan, M. Holtrop, Katrin Dahl, H. Kaufer, Meng Wang, A. R. Wade, D.B. DeBra, C. M. Mow-Lowry, Sergey P. Vyatchanin, E. Goetz, T. Dent, Mallory S. E. Roberts, Kazuhiro Hayama, J. Logue, John D. Scott, D. L. Kinzel, A. Giazotto, V. Predoi, I. W. Martin, Peter Kalmus, Virginio Sannibale, J. R. Leong, B. Machenschalk, R. A. Mercer, David E. McClelland, F. Donovan, R. Inta, J. H. Clayton, B. F. Whiting, S. Dorsher, C. Bradaschia, P. Shawhan, I. Ferrante, D. Passuello, F. Cleva, Ik Siong Heng, A. Rüdiger, S. Steplewski, Hyun Lee, M. Galimberti, A. Perreca, G. Gemme, M. Drago, Guenakh Mitselmakher, V. Raymond, Fan Zhang, C. Van Den Broeck, Jonathan R. Gair, M. Pichot, S. Klimenko, M. Was, Th. S. Bauer, Christian D. Ott, C. Palomba, S. Privitera, I. Yakushin, L. Sammut, Fabio Postiglione, P. Charlton, P. Kwee, Ruxandra Bondarescu, S. E. Whitcomb, S. C. McGuire, K. A. Thorne, G. Mendell, J. A. Giaime, N. A. Lockerbie, Y. M. Kim, Emma L. Robinson, O. Puncken, John Nelson, D. Talukder, C. V. Torres, I. Leonor, C. Messenger, A. M. Sergeev, F. Seifert, D. Friedrich, C. Lawrie, H. Vocca, P. Astone, R. J. S. Greenhalgh, S. Ast, I. W. Harry, R. Gouaty, C. M. Reed, F. Marion, N. Leroy, V. Kondrashov, M. Kasprzack, Peter Fritschel, Ping Koy Lam, G. Debreczeni, I. A. Bilenko, David J. Ottaway, Vladimir Dergachev, James Whelan, P. Ajith, A. P. M. ter Braack, M. Bastarrika, M. J. Cowart, Y. Minenkov, Y. Bao, P. J. Veitch, John Miller, S. Foley, Shaun Hooper, D. F. Menéndez, T. Prestegard, Saranya Ghosh, R. De Rosa, V. Loriette, R. Schilling, M. Bebronne, Jonah Kanner, A. Morgia, Alessandra Corsi, M. Cordier, D. B. Kelley, Zhihui Du, H. Wittel, M. S. Meyer, W. Z. Korth, Xiaomin Wang, P. Wessels, A. L. Stuver, Ludovico Carbone, P. Couvares, Benno Willke, R. Kurdyumov, R. Kasturi, Matthew P. Edgar, Namjun Kim, Enrico Calloni, E. J. Daw, G. Traylor, J. C. Driggers, Thomas Corbitt, L. Naticchioni, Kazuhiro Agatsuma, F. Frasconi, A. S. Stroeer, Carlos Cepeda, Jessica McIver, Robert J. McCarthy, J. C. Dumas, Rosa Poggiani, V. Herrera, Albert Lazzarini, Anton B. Ivanov, Samuel J. Waldman, M. Tonelli, Larry R. Price, Takao Mori, C. Osthelder, D. O. Bridges, Rebecca Fisher, Jesper Munch, J. Li, David Jones, Marco Cavaglia, P. Raffai, M. A. Bizouard, J. Hanks, S. Van Der Putten, Ranjan Gupta, M. Heurs, Huan Yang, Koji Arai, C. R. Ramet, R. Flaminio, K. Kokeyama, Rainer Weiss, S. D'Antonio, M. A. Frei, E. Saracco, C. Tomlinson, C. A. Costa, Soma Mukherjee, Fausto Acernese, F. Ricci, J. Breyer, Alessandra Buonanno, Paolo Addesso, K. D. Giardina, C. Gill, S. Doravari, Igor Neri, Linqing Wen, A. W. Heptonstall, Peter R. Saulson, Prayush Kumar, G. P. Newton, M. Fyffe, R. W. P. Drever, Drew Keppel, C. Gray, P. Baker, B. Moe, M. Damjanic, E. Coccia, M. Rodruck, J. G. Rollins, C. L. Mueller, Yueh-Feng Liu, S. Grunewald, M. Mantovani, B. Sorazu, A. Thüring, A. C. Melissinos, Andrea Chincarini, T. Z. Summerscales, W. Katzman, R. J.E. Smith, Gabriela Gonzalez, Ettore Majorana, D. Keitel, L. G. Prokhorov, J. M. Hallam, Innocenzo M. Pinto, Kentaro Somiya, M. Brinkmann, Matthew West, W. W. Johnson, Amanda J. Page, D. Lodhia, P. Ehrens, C-H. Lee, S. B. Anderson, Joseph Gleason, V. Fafone, G. R. Skelton, Andrew Lundgren, G. Santostasi, Ruslan Vaulin, David B. Tanner, M. Bitossi, Maik Frede, B. Mours, M. C. Araya, S. Kandhasamy, A. Chiummo, M. Factourovich, M. E. Gáspár, A. K. Zadrożny, K. Wette, Ryan DeRosa, G. Vedovato, D. B. Kozak, John J. Oh, Timothy Evans, C. Vorvick, V. Brisson, M. Sung, C. Adams, A. Khalaidovski, R. Engel, V. Boschi, Joseph D. Romano, B. Bland, T. Etzel, H. P. Daveloza, Moritz Mehmet, B. Lantz, Thanh Vinh Nguyen, David Blair, F. Salemi, D. Sigg, S. W. Ballmer, Philip Graff, R. M. Cutler, M. Pedraza, J. Steinlechner, P. Campsie, P. Leaci, A. Colla, Luca Gammaitoni, Kasem Mossavi, P. Thomas, D. Nolting, L. Bonelli, P. Schwinberg, Stefaan Franco, Maria Alessandra Papa, C. C. Yancey, G. Moreno, F. Cavalier, A. Nitz, W. G. Anderson, G. Cella, Karoline Wiesner, R. M. S. Schofield, T. Eberle, Erik Katsavounidis, Giacomo Ciani, A. Mullavey, B. P. Abbott, Matthew Benacquista, E. K. Gustafson, D. E. Clark, D. Barker, Benjamin J. Owen, F. Martelli, J. F. J. van den Brand, Collin Capano, S. Vass, S. Frasca, C. Robinson, Benjamin William Allen, M. Tacca, C. Affeldt, Martin Hendry, Christopher Wipf, Douglas H Beck, G. Szeifert, K. V. Tokmakov, Gianluca Persichetti, Fabrice Matichard, W. Kells, Lucía Santamaría, R. Taylor, J. Slutsky, Imre Bartos, M. J. Lubinski, Jolien D. E. Creighton, Karsten Danzmann, M. Colombini, Martin Hewitson, Junwei Cao, N. Morgado, K. Evans, Stephen Fairhurst, S. Caride, Lindy Blackburn, V. Quetschke, Bangalore Suryanarayana Sathyaprakash, E. Black, Sanichiro Yoshida, T. P. Bodiya, J. R. Smith, R. Bork, M. Punturo, Leopoldo Milano, S. Roddy, C. Buy, Graham Woan, K. Holt, Tristan Briant, T. Nash, Robert L. Byer, Stuart Reid, Rajesh Kumar, G. Endroczi, Chunglee Kim, V. Sandberg, S. Mosca, M. Vavoulidis, Vladimir B. Braginsky, Jeffery Kline, G. H. Ogin, L. Pinard, J. D. Lough, B. Schulz, H. Vahlbruch, H. Fehrmann, J. Garcia, J. O'Dell, T. Dayanga, K. Riles, J. Y. Vinet, F. Carbognani, Federico Ferrini, Haixing Miao, S. L. Danilishin, G. Vajente, Bernard F. Schutz, O. Bock, N. Fotopoulos, István Rácz, Li Ju, D. Moraru, Daniel A. Shaddock, Lee Samuel Finn, K. L. Dooley, Kip S. Thorne, T. Chalermsongsak, Alessandro Bertolini, J. Hanson, M. Stefszky, M. Weinert, D. Yeaton-Massey, T. Reed, Lisa Barsotti, F. Fidecaro, G. M. Guidi, J.-F. Hayau, M. Yvert, T. D. Abbott, Guido Mueller, A. Stochino, V. P. Mitrofanov, W. Del Pozzo, P. F. Cohadon, Trevor Sidery, H. Heitmann, B. Rankins, Joshua Yablon, Alessandra Toncelli, David Murphy, R. J. G. Jonker, L. Wallace, H. Radkins, F. Vetrano, A. Królak, M. H. Wimmer, R. Frey, J. Abadie, Evan Ochsner, S. E. Dwyer, P. J. King, B. Shapiro, J. M. Berliner, A. J. Weinstein, J. Pöld, A. G. Wiseman, David Coward, Sheon Chua, P. T. Beyersdorf, C. J. Guido, Christian Röver, R. Bonnand, L. Sperandio, Suvadeep Bose, Z. Márka, D. C. Coyne, K. Grover, Jan Harms, M. Landry, K. Izumi, Satyanarayan Ray Pitambar Mohapatra, L. Di Fiore, E. Steinert, M. R. Smith, Eric Howell, M. Edwards, M. Pickenpack, M. Barsuglia, A. Rocchi, L. K. Nuttall, D. Buskulic, F. Kawazoe, O. Torre, E. Cuoco, S. Gil-Casanova, M. R. Abernathy, Nico Lastzka, G. Billingsley, S. Meshkov, Seog Oh, A. Grant, T. Hong, L. Bosi, A. Cumming, E. Genin, Maria Ilaria Del Principe, L. Zhang, M. Agathos, S. R. Morriss, Alberto Vecchio, A. M. Gretarsson, J. Bauchrowitz, Roman Schnabel, A. Dietz, J. K. Blackburn, E. Chassande-Mottin, J. E. Brau, B. Canuel, A. A. van Veggel, Sheila Rowan, Lutz Winkelmann, Efim A. Khazanov, G. Ballardin, Todd Adams, Fiona C. Speirits, B. Hughey, M. Phelps, John Veitch, C. Titsler, F. Clara, M. MacInnis, P. Rapagnani, Andreas Freise, Vincenzo Pierro, Matthew Pitkin, R. Wooley, M. Wade, M. Granata, M. Parisi, M. G. Beker, T. Huynh-Dinh, Dustin Anderson, J. S. Kissel, Marc Favata, K. Yamamoto, L. E. Wade, Roger Jones, K. Kawabe, S. M. Aston, Michael W. Coughlin, M. Mageswaran, J. Betzwieser, Antoine Heidmann, H. Overmier, D. Sellers, D. Hoak, D. Sentenac, Patrick Brady, Zhi Liu, Laboratoire d'Annecy de Physique des Particules ( LAPP/Laboratoire d'Annecy-le-Vieux de Physique des Particules ), 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 ), 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 ) -Université Paris Diderot - Paris 7 ( UPD7 ) -Centre National de la Recherche Scientifique ( CNRS ) -Collège de France ( CdF ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Université Paris Diderot - Paris 7 ( UPD7 ) -Centre National de la Recherche Scientifique ( CNRS ) -AstroParticule et Cosmologie ( APC - UMR 7164 ), Centre National de la Recherche Scientifique ( CNRS ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Observatoire de Paris-Université Paris Diderot - Paris 7 ( UPD7 ) -Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) -Centre National de la Recherche Scientifique ( CNRS ) -Observatoire de Paris-Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ), Laboratoire de l'Accélérateur Linéaire ( LAL ), 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 ), Institut de Physique de Rennes ( IPR ), Université de Rennes 1 ( UR1 ), Université de Rennes ( UNIV-RENNES ) -Université de Rennes ( UNIV-RENNES ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire des matériaux avancés ( LMA ), 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 ), AstroParticule et Cosmologie ( APC - UMR 7164 ), Centre National de la Recherche Scientifique ( CNRS ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Observatoire de Paris-Université Paris Diderot - Paris 7 ( UPD7 ) -Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ), Astrophysique Relativiste Théories Expériences Métrologie Instrumentation Signaux ( ARTEMIS ), Université Nice Sophia Antipolis ( UNS ), Université Côte d'Azur ( UCA ) -Université Côte d'Azur ( UCA ) -Institut national des sciences de l'Univers ( INSU - CNRS ) -Observatoire de la Côte d'Azur, Université Côte d'Azur ( UCA ) -Centre National de la Recherche Scientifique ( CNRS ), APC - Gravitation ( APC-Gravitation ), Centre National de la Recherche Scientifique ( CNRS ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Observatoire de Paris-Université Paris Diderot - Paris 7 ( UPD7 ) -Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) -Centre National de la Recherche Scientifique ( CNRS ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Observatoire de Paris-Université Paris Diderot - Paris 7 ( UPD7 ) -Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) -Max-Planck-Institut für Gravitationsphysik (Albert-Einstein-Institut), Max-Planck-Institut-Max-Planck-Institut, (Astro)-Particles Physics, 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), AstroParticule et Cosmologie (APC (UMR_7164)), 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), Laboratoire de l'Accélérateur Linéaire (LAL), 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), Institut de Physique de Rennes (IPR), Université de Rennes (UR)-Centre National de la Recherche Scientifique (CNRS), Laboratoire des matériaux avancés (LMA), 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), Astrophysique Relativiste Théories Expériences Métrologie Instrumentation Signaux (ARTEMIS), Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Annecy de Physique des Particules (LAPP/Laboratoire d'Annecy-le-Vieux de Physique des Particules), 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 de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS), 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), Université Nice Sophia Antipolis (... - 2019) (UNS), Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, Université Côte d'Azur (UCA)-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, Aasi, J., Abadie, J., Abbott, B. P., Abbott, R., Abbott, T. D., Abernathy, M., Accadia, T., Acernese, F., Adams, C., Adams, T., Addesso, P., Adhikari, R., Affeldt, C., Agathos, M., Agatsuma, K., Ajith, P., Allen, B., Allocca, A., Amador Ceron, E., Amariutei, D., Anderson, S. B., Anderson, W. G., Arai, K., Araya, M. C., Ast, S., Aston, S. M., Astone, P., Atkinson, D., Aufmuth, P., Aulbert, C., Aylott, B. E., Babak, S., Baker, P., Ballardin, G., Ballmer, S., Bao, Y., Barayoga, J. C. B., Barker, D., Barone, F., Barr, B., Barsotti, L., Barsuglia, M., Barton, M. A., Bartos, I., Bassiri, R., Bastarrika, M., Basti, A., Batch, J., Bauchrowitz, J., Bauer, T. h. S., Bebronne, M., Beck, D., Behnke, B., Bejger, M., Beker, M. G., Bell, A. S., Bell, C., Belopolski, I., Benacquista, M., Berliner, J. M., Bertolini, A., Betzwieser, J., Beveridge, N., Beyersdorf, P. T., Bhadbade, T., Bilenko, I. A., Billingsley, G., Birch, J., Biswas, R., Bitossi, M., Bizouard, M. A., Black, E., Blackburn, J. K., Blackburn, L., Blair, D., Bland, B., Blom, M., Bock, O., Bodiya, T. P., Bogan, C., Bond, C., Bondarescu, R., Bondu, F., Bonelli, L., Bonnand, R., Bork, R., Born, M., Boschi, V., Bose, S., Bosi, L., Bouhou, B., Braccini, S., Bradaschia, C., Brady, P. R., Braginsky, V. B., Branchesi, M., Brau, J. E., Breyer, J., Briant, T., Bridges, D. O., Brillet, A., Brinkmann, M., Brisson, V., Britzger, M., Brooks, A. F., Brown, D. A., Bulik, T., Bulten, H. J., Buonanno, A., Burguet Castell, J., Buskulic, D., Buy, C., Byer, R. L., Cadonati, L., Cagnoli, G., Calloni, Enrico, Camp, J. B., Campsie, P., Cannon, K., Canuel, B., Cao, J., Capano, C. D., Carbognani, F., Carbone, L., Caride, S., Caudill, S., Cavaglià, M., Cavalier, F., Cavalieri, R., Cella, G., Cepeda, C., Cesarini, E., Chalermsongsak, T., Charlton, P., Chassande Mottin, E., Chen, W., Chen, X., Chen, Y., Chincarini, A., Chiummo, A., Cho, H. S., Chow, J., Christensen, N., Chua, S. S. Y., Chung, C. T. Y., Chung, S., Ciani, G., Clara, F., Clark, D. E., Clark, J. A., Clayton, J. H., Cleva, F., Coccia, E., Cohadon, P. F., Colacino, C. N., Colla, A., Colombini, M., Conte, A., Conte, R., Cook, D., Corbitt, T. R., Cordier, M., Cornish, N., Corsi, A., Costa, C. A., Coughlin, M., Coulon, J. P., Couvares, P., Coward, D. M., Cowart, M., Coyne, D. C., Creighton, J. D. E., Creighton, T. D., Cruise, A. M., Cumming, A., Cunningham, L., Cuoco, E., Cutler, R. M., Dahl, K., Damjanic, M., Danilishin, S. L., D’Antonio, S., Danzmann, K., Dattilo, V., Daudert, B., Daveloza, H., Davier, M., Daw, E. J., Day, R., Dayanga, T., DE ROSA, Rosario, Debra, D., Debreczeni, G., Degallaix, J., Del Pozzo, W., Dent, T., Dergachev, V., Derosa, R., Dhurandhar, S., Di Fiore, L., Di Lieto, A., Di Palma, I., Di Paolo Emilio, M., Di Virgilio, A., Díaz, M., Dietz, A., Donovan, F., Dooley, K. L., Doravari, S., Dorsher, S., Drago, M., Drever, R. W. P., Driggers, J. C., Du, Z., Dumas, J. C., Dwyer, S., Eberle, T., Edgar, M., Edwards, M., Effler, A., Ehrens, P., Endrőczi, G., Engel, R., Etzel, T., Evans, K., Evans, M., Evans, T., Factourovich, M., Fafone, V., Fairhurst, S., Farr, B. F., Favata, M., Fazi, D., Fehrmann, H., Feldbaum, D., Ferrante, I., Ferrini, F., Fidecaro, F., Finn, L. S., Fiori, I., Fisher, R. P., Flaminio, R., Foley, S., Forsi, E., Fotopoulos, N., Fournier, J. D., Franc, J., Franco, S., Frasca, S., Frasconi, F., Frede, M., Frei, M. A., Frei, Z., Freise, A., Frey, R., Fricke, T. T., Friedrich, D., Fritschel, P., Frolov, V. V., Fujimoto, M. K., Fulda, P. J., Fyffe, M., Gair, J., Galimberti, M., Gammaitoni, L., Garcia, J., Garufi, Fabio, Gáspár, M. E., Gelencser, G., Gemme, G., Genin, E., Gennai, A., Gergely, L. Á., Ghosh, S., Giaime, J. A., Giampanis, S., Giardina, K. D., Giazotto, A., Gil Casanova, S., Gill, C., Gleason, J., Goetz, E., González, G., Gorodetsky, M. L., Goßler, S., Gouaty, R., Graef, C., Graff, P. B., Granata, M., Grant, A., Gray, C., Greenhalgh, R. J. S., Gretarsson, A. M., Griffo, C., Grote, H., Grover, K., Grunewald, S., Guidi, G. M., Guido, C., Gupta, R., Gustafson, E. K., Gustafson, R., Hallam, J. M., Hammer, D., Hammond, G., Hanks, J., Hanna, C., Hanson, J., Harms, J., Harry, G. M., Harry, I. W., Harstad, E. D., Hartman, M. T., Haughian, K., Hayama, K., Hayau, J. F., Heefner, J., Heidmann, A., Heitmann, H., Hello, P., Hendry, M. A., Heng, I. S., Heptonstall, A. W., Herrera, V., Heurs, M., Hewitson, M., Hild, S., Hoak, D., Hodge, K. A., Holt, K., Holtrop, M., Hong, T., Hooper, S., Hough, J., Howell, E. J., Hughey, B., Husa, S., Huttner, S. H., Huynh Dinh, T., Ingram, D. R., Inta, R., Isogai, T., Ivanov, A., Izumi, K., Jacobson, M., James, E., Jang, Y. J., Jaranowski, P., Jesse, E., Johnson, W. W., Jones, D. I., Jones, R., Jonker, R. J. G., Ju, L., Kalmus, P., Kalogera, V., Kandhasamy, S., Kang, G., Kanner, J. B., Kasprzack, M., Kasturi, R., Katsavounidis, E., Katzman, W., Kaufer, H., Kaufman, K., Kawabe, K., Kawamura, S., Kawazoe, F., Keitel, D., Kelley, D., Kells, W., Keppel, D. G., Keresztes, Z., Khalaidovski, A., Khalili, F. Y., Khazanov, E. A., Kim, B. K., Kim, C., Kim, H., Kim, K., Kim, N., Kim, Y. M., King, P. J., Kinzel, D. L., Kissel, J. S., Klimenko, S., Kline, J., Kokeyama, K., Kondrashov, V., Koranda, S., Korth, W. Z., Kowalska, I., Kozak, D., Kringel, V., Krishnan, B., Królak, A., Kuehn, G., Kumar, P., Kumar, R., Kurdyumov, R., Kwee, P., Lam, P. K., Landry, M., Langley, A., Lantz, B., Lastzka, N., Lawrie, C., Lazzarini, A., Leaci, P., Lee, C. H., Lee, H. K., Lee, H. M., Leong, J. R., Leonor, I., Leroy, N., Letendre, N., Lhuillier, V., Li, J., T. G. F., Li, Lindquist, P. E., Litvine, V., Liu, Y., Liu, Z., Lockerbie, N. A., Lodhia, D., Logue, J., Lorenzini, M., Loriette, V., Lormand, M., Losurdo, G., Lough, J., Lubinski, M., Lück, H., Lundgren, A. P., Macarthur, J., Macdonald, E., Machenschalk, B., Macinnis, M., Macleod, D. M., Mageswaran, M., Mailand, K., Majorana, E., Maksimovic, I., Malvezzi, V., Man, N., Mandel, I., Mandic, V., Mantovani, M., Marchesoni, F., Marion, F., Márka, S., Márka, Z., Markosyan, A., Maros, E., Marque, J., Martelli, F., Martin, I. W., Martin, R. M., Marx, J. N., Mason, K., Masserot, A., Matichard, F., Matone, L., Matzner, R. A., Mavalvala, N., Mazzolo, G., Mccarthy, R., Mcclelland, D. E., Mcguire, S. C., Mcintyre, G., Mciver, J., Meadors, G. D., Mehmet, M., Meier, T., Melatos, A., Melissinos, A. C., Mendell, G., Menéndez, D. F., Mercer, R. A., Meshkov, S., Messenger, C., Meyer, M. S., Miao, H., Michel, C., Milano, L., Miller, J., Minenkov, Y., Mingarelli, C. M. F., Mitrofanov, V. P., Mitselmakher, G., Mittleman, R., Moe, B., Mohan, M., Mohapatra, S. R. P., Moraru, D., Moreno, G., Morgado, N., Morgia, A., Mori, T., Morriss, S. R., Mosca, S., Mossavi, K., Mours, B., Mow Lowry, C. M., Mueller, C. L., Mueller, G., Mukherjee, S., Mullavey, A., Müller Ebhardt, H., Munch, J., Murphy, D., Murray, P. G., Mytidis, A., Nash, T., Naticchioni, L., Necula, V., Nelson, J., Neri, I., Newton, G., Nguyen, T., Nishizawa, A., Nitz, A., Nocera, F., Nolting, D., Normandin, M. E., Nuttall, L., Ochsner, E., O’Dell, J., Oelker, E., Ogin, G. H., J. J., Oh, S. H., Oh, Oldenberg, R. G., O’Reilly, B., O’Shaughnessy, R., Osthelder, C., Ott, C. D., Ottaway, D. J., Ottens, R. S., Overmier, H., Owen, B. J., Page, A., Palladino, L., Palomba, C., Pan, Y., Paoletti, F., Paoletti, R., Papa, M. A., Parisi, M., Pasqualetti, A., Passaquieti, R., Passuello, D., Pedraza, M., Penn, S., Perreca, A., Persichetti, G., Phelps, M., Pichot, M., Pickenpack, M., Piergiovanni, F., Pierro, V., Pihlaja, M., Pinard, L., Pinto, I. M., Pitkin, M., Pletsch, H. J., Plissi, M. V., Poggiani, R., Pöld, J., Postiglione, F., Poux, C., Prato, M., Predoi, V., Prestegard, T., Price, L. R., Prijatelj, M., Principe, M., Privitera, S., Prix, R., Prodi, G. A., Prokhorov, L. G., Puncken, O., Punturo, M., Puppo, P., Quetschke, V., Quitzow James, R., Raab, F. J., Rabeling, D. S., Rácz, I., Radkins, H., Raffai, P., Rakhmanov, M., Ramet, C., Rankins, B., Rapagnani, P., Raymond, V., Re, V., Reed, C. M., Reed, T., Regimbau, T., Reid, S., Reitze, D. H., Ricci, F., Riesen, R., Riles, K., Roberts, M., Robertson, N. A., Robinet, F., Robinson, C., Robinson, E. L., Rocchi, A., Roddy, S., Rodriguez, C., Rodruck, M., Rolland, L., Rollins, J. G., Romano, J. D., Romano, R., Romie, J. H., Rosińska, D., Röver, C., Rowan, S., Rüdiger, A., Ruggi, P., Ryan, K., Salemi, F., Sammut, L., Sandberg, V., Sankar, S., Sannibale, V., Santamaría, L., Santiago Prieto, I., Santostasi, G., Saracco, E., Sathyaprakash, B. S., Saulson, P. R., Savage, R. L., Schilling, R., Schnabel, R., Schofield, R. M. S., Schulz, B., Schutz, B. F., Schwinberg, P., Scott, J., Scott, S. M., Seifert, F., Sellers, D., Sentenac, D., Sergeev, A., Shaddock, D. A., Shaltev, M., Shapiro, B., Shawhan, P., Shoemaker, D. H., Sidery, T. L., Siemens, X., Sigg, D., Simakov, D., Singer, A., Singer, L., Sintes, A. M., Skelton, G. R., Slagmolen, B. J. J., Slutsky, J., Smith, J. R., Smith, M. R., Smith, R. J. E., Smith Lefebvre, N. D., Somiya, K., Sorazu, B., Speirits, F. C., Sperandio, L., Stefszky, M., Steinert, E., Steinlechner, J., Steinlechner, S., Steplewski, S., Stochino, A., Stone, R., Strain, K. A., Strigin, S. E., Stroeer, A. S., Sturani, R., Stuver, A. L., Summerscales, T. Z., Sung, M., Susmithan, S., Sutton, P. J., Swinkels, B., Szeifert, G., Tacca, M., Taffarello, L., Talukder, D., Tanner, D. B., Tarabrin, S. P., Taylor, R., ter Braack, A. P. M., Thomas, P., Thorne, K. A., Thorne, K. S., Thrane, E., Thüring, A., Titsler, C., Tokmakov, K. V., Tomlinson, C., Toncelli, A., Tonelli, M., Torre, O., Torres, C. V., Torrie, C. I., Tournefier, E., Travasso, F., Traylor, G., Tse, M., Ugolini, D., Vahlbruch, H., Vajente, G., van den Brand, J. F. J., Van Den Broeck, C., van der Putten, S., van Veggel, A. A., Vass, S., Vasuth, M., Vaulin, R., Vavoulidis, M., Vecchio, A., Vedovato, G., Veitch, J., Veitch, P. J., Venkateswara, K., Verkindt, D., Vetrano, F., Viceré, A., Villar, A. E., Vinet, J. Y., Vitale, S., Vocca, H., Vorvick, C., Vyatchanin, S. P., Wade, A., Wade, L., Wade, M., Waldman, S. J., Wallace, L., Wan, Y., Wang, M., Wang, X., Wanner, A., Ward, R. L., Was, M., Weinert, M., Weinstein, A. J., Weiss, R., Welborn, T., Wen, L., Wessels, P., West, M., Westphal, T., Wette, K., Whelan, J. T., Whitcomb, S. E., White, D. J., Whiting, B. F., Wiesner, K., Wilkinson, C., Willems, P. A., Williams, L., Williams, R., Willke, B., Wimmer, M., Winkelmann, L., Winkler, W., Wipf, C. C., Wiseman, A. G., Wittel, H., Woan, G., Wooley, R., Worden, J., Yablon, J., Yakushin, I., Yamamoto, H., Yamamoto, K., Yancey, C. C., Yang, H., Yeaton Massey, D., Yoshida, S., Yvert, M., Zadrożny, A., Zanolin, M., Zendri, J. P., Zhang, F., Zhang, L., Zhao, C., Zotov, N., Zucker, M. E., Zweizig, J., Anderson, D. P., Pinto, Innocenzo, Massachusetts Institute of Technology. Department of Physics, MIT Kavli Institute for Astrophysics and Space Research, LIGO (Observatory : Massachusetts Institute of Technology), Barsotti, Lisa, Bodiya, Timothy Paul, Corbitt, Thomas R., Donovan, Frederick J., Evans, Matthew J., Fritschel, Peter K., Katsavounidis, Erotokritos, Kissel, Jeffrey S., Kwee, Patrick, MacInnis, Myron E., Matichard, Fabrice, Mavalvala, Nergis, Mittleman, Richard K., Oelker, Eric Glenn, Shoemaker, David H., Vaulin, Ruslan, Wipf, Christopher, Zucker, Michael E., 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), 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), 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, 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), The LIGO Scientific Collaboration, and The Virgo Collaboration
Subjects: Physics and Astronomy (miscellaneous), gravitational waves, pulsar, interferometers, Astrophysics, 01 natural sciences, General Relativity and Quantum Cosmology, general relativity, Range (statistics), PACS number: 04.80.Nn, PACS numbers: 95.55.Ym, PACS number: 97.60.Gb, PACS number: 07.05.Kf, NEUTRON-STAR, HOUGH TRANSFORM, PULSAR, RADIATION, EMISSION, 010303 astronomy & astrophysics, QC, QB, media_common, LIGO Scientific Collaboration, Physics, Settore FIS/01 - Fisica Sperimentale, [ SDU.ASTR.IM ] Sciences of the Universe [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], Nuclear and High Energy Physics, 3. Good health, Neutron-star, Amplitude, [PHYS.GRQC]Physics [physics]/General Relativity and Quantum Cosmology [gr-qc], Astrophysics - Instrumentation and Methods for Astrophysics, Gravitation, Einstein@Home, [PHYS.ASTR.IM]Physics [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], media_common.quotation_subject, FOS: Physical sciences, General Relativity and Quantum Cosmology (gr-qc), [ PHYS.GRQC ] Physics [physics]/General Relativity and Quantum Cosmology [gr-qc], Settore FIS/05 - Astronomia e Astrofisica, Pulsar, 0103 physical sciences, Instrumentation and Methods for Astrophysics (astro-ph.IM), 010308 nuclear & particles physics, Gravitational wave, LIGO, [SDU.ASTR.IM]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], Sky, [ PHYS.ASTR.IM ] Physics [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM]
Abstract: This paper presents results of an all-sky searches for periodic gravitational waves in the frequency range [50, 1190] Hz and with frequency derivative ranges of [-2 x 10^-9, 1.1 x 10^-10] Hz/s for the fifth LIGO science run (S5). The novelty of the search lies in the use of a non-coherent technique based on the Hough-transform to combine the information from coherent searches on timescales of about one day. Because these searches are very computationally intensive, they have been deployed on the Einstein@Home distributed computing project infrastructure. The search presented here is about a factor 3 more sensitive than the previous Einstein@Home search in early S5 LIGO data. The post-processing has left us with eight surviving candidates. We show that deeper follow-up studies rule each of them out. Hence, since no statistically significant gravitational wave signals have been detected, we report upper limits on the intrinsic gravitational wave amplitude h0. For example, in the 0.5 Hz-wide band at 152.5 Hz, we can exclude the presence of signals with h0 greater than 7.6 x 10^-25 with a 90% confidence level., 29 pages, 14 figures, 6 tables. Science summary page at http://www.ligo.org/science/Publication-FullS5EatH/index.php ; Public access area to figures and tables at https://dcc.ligo.org/cgi-bin/DocDB/ShowDocument?docid=p1200026
Published: 2013

22. The Einstein@Home search for radio pulsars and PSR J2007+2722 discovery

Author: J. M. Cordes, C. Messenger, Fredrick A. Jenet, P. Lazarus, B. Machenschalk, O. Bock, Eric V. Gotthelf, Kejia Lee, Scott M. Ransom, Dustin Anderson, Paul Scholz, Weiwei Zhu, Ingrid H. Stairs, Maura McLaughlin, Paul Demorest, Reinhard Prix, H. Fehrmann, V. M. Kaspi, A. Brazier, George Heald, J. van Leeuwen, Andrew Lyne, Benjamin Knispel, Fronefield Crawford, C. Aulbert, David Champion, Benjamin William Allen, H.-B. Eggenstein, Fernando Camilo, Shami Chatterjee, D. Hammer, Kevin Stovall, J. S. Deneva, M. A. Papa, Jason W. T. Hessels, R. Rosen, Holger J. Pletsch, N. D. R. Bhat, Paulo C. C. Freire, Slavko Bogdanov, Ben Stappers, R. S. Lynch, X. Siemens, Gregory Desvignes, Michael Kramer, A. Venkataraman, and High Energy Astrophys. & Astropart. Phys (API, FNWI)
Subjects: Einstein@Home, Physics, High Energy Astrophysical Phenomena (astro-ph.HE), 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Detector, Flux, Astronomy, Binary number, FOS: Physical sciences, Astronomy and Astrophysics, Parameter space, 01 natural sciences, Astrophysics - Astrophysics of Galaxies, Neutron star, Pulsar, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), 0103 physical sciences, Arecibo Observatory, Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - High Energy Astrophysical Phenomena, 010303 astronomy & astrophysics, Instrumentation and Methods for Astrophysics (astro-ph.IM)
Abstract: Einstein@Home aggregates the computer power of hundreds of thousands of volunteers from 193 countries, to search for new neutron stars using data from electromagnetic and gravitational-wave detectors. This paper presents a detailed description of the search for new radio pulsars using Pulsar ALFA survey data from the Arecibo Observatory. The enormous computing power allows this search to cover a new region of parameter space; it can detect pulsars in binary systems with orbital periods as short as 11 minutes. We also describe the first Einstein@Home discovery, the 40.8 Hz isolated pulsar PSR J2007+2722, and provide a full timing model. PSR J2007+2722's pulse profile is remarkably wide with emission over almost the entire spin period. This neutron star is most likely a disrupted recycled pulsar, about as old as its characteristic spin-down age of 404 Myr. However there is a small chance that it was born recently, with a low magnetic field. If so, upper limits on the X-ray flux suggest but can not prove that PSR J2007+2722 is at least ~ 100 kyr old. In the future, we expect that the massive computing power provided by volunteers should enable many additional radio pulsar discoveries., Comment: ArXiv version updated to correspond to the published ApJ version. This includes pulse profiles for PSR J2007+2722 at 327 and 430 MHz, correction of a sign error in the polarimetry conventions, improvements to the estimate of the expected shortest orbital period of a Galactic DNS system, and other changes made in refereeing and proof. 32 pages, 19 figures, 7 tables
Published: 2013
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23. Einstein@Home Discovery of 24 Pulsars in the Parkes Multi-beam Pulsar Survey

Author: Evan Keane, Fronefield Crawford, Benjamin Knispel, Ben Stappers, H. Fehrmann, M. A. Papa, D. Rastawicki, D. Hammer, C. Aulbert, Benjamin William Allen, B. Machenschalk, Hyoun-Woo Kim, Andrew Lyne, O. Bock, X. Siemens, Michael Kramer, Ralph Eatough, H.-B. Eggenstein, Dustin Anderson, John Sarkissian, and R. Miller
Subjects: Einstein@Home, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Binary number, General Relativity and Quantum Cosmology (gr-qc), Astrophysics, 01 natural sciences, General Relativity and Quantum Cosmology, symbols.namesake, Pulsar, Millisecond pulsar, Volunteer computing, 0103 physical sciences, Instrumentation and Methods for Astrophysics (astro-ph.IM), 010303 astronomy & astrophysics, Physics, 010308 nuclear & particles physics, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy and Astrophysics, Orbital period, Astrophysics - Astrophysics of Galaxies, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), Multi beam, symbols, Astrophysics - Instrumentation and Methods for Astrophysics, Doppler effect
Abstract: We have conducted a new search for radio pulsars in compact binary systems in the Parkes multi-beam pulsar survey (PMPS) data, employing novel methods to remove the Doppler modulation from binary motion. This has yielded unparalleled sensitivity to pulsars in compact binaries. The required computation time of approximately 17000 CPU core years was provided by the distributed volunteer computing project Einstein@Home, which has a sustained computing power of about 1 PFlop/s. We discovered 24 new pulsars in our search, of which 18 were isolated pulsars, and six were members of binary systems. Despite the wide filterbank channels and relatively slow sampling time of the PMPS data, we found pulsars with very large ratios of dispersion measure (DM) to spin period. Among those is PSR J1748-3009, the millisecond pulsar with the highest known DM (approximately 420 pc/cc). We also discovered PSR J1840-0643, which is in a binary system with an orbital period of 937 days, the fourth largest known. The new pulsar J1750-2536 likely belongs to the rare class of intermediate-mass binary pulsars. Three of the isolated pulsars show long-term nulling or intermittency in their emission, further increasing this growing family. Our discoveries demonstrate the value of distributed volunteer computing for data-driven astronomy and the importance of applying new analysis methods to extensively searched data., Comment: 17 pages, 9 figures, 3 tables; updated version to agree with version published in ApJ
Published: 2013

24. An Exploration of CUDA and CBEA for Einstein@Home

Author: Jens Breitbart and Gaurav Khanna
Subjects: Einstein@Home, CUDA, Software, Computer architecture, Computer science, business.industry, Operating system, computer.software_genre, business, computer
Abstract: We present a detailed approach for making use of two new computer hardware architectures-CBEA and CUDA-for accelerating a scientific data-analysis application (Einstein@Home). Our results suggest that both the architectures suit the application quite well and the achievable performance in the same software developmental timeframe is nearly identical.
Published: 2010

25. Einstein@Home search for periodic gravitational waves in early S5 LIGO data

Author: C. T. Y. Chung, Walter Winkler, Michael E Zucker, J. Dueck, H. Lin, Laura Cadonati, A. S. Markosyan, Harald Lück, H. Mukhopadhyay, C. Aulbert, Kipp Cannon, R. S. Ottens, S. C. McGuire, D. J. A. McKechan, S. Giampanis, Susan M. Scott, E. Chalkley, S. Kandhasamy, Teviet Creighton, P. Ehrens, Z. Frei, D. S. Rabeling, Ilya Mandel, Rana X. Adhikari, M. R. Smith, Vincenzo Galdi, Marco Aurelio Diaz, Chad Hanna, C. Wilkinson, R. L. Ward, A. S. Sengupta, V. Kondrashov, C. Echols, S. H. Huttner, Chunnong Zhao, K. Wette, Timothy Evans, D. Sigg, S. W. Ballmer, G. Moreno, Antonio Lucianetti, J. Ulmen, Kirk McKenzie, David H. Shoemaker, Sanichiro Yoshida, R. DeSalvo, Andrew Melatos, G. McIntyre, Richard A. Matzner, P. J. Sutton, J. H. Romie, R. J. S. Greenhalgh, Gareth Jones, B. Machenschalk, F. Donovan, P. Lu, O. Burmeister, Shantanu Desai, D. Barker, Kip S. Thorne, P. Shawhan, P. Charlton, B. Sorazu, A. Thüring, A. C. Melissinos, T. Z. Summerscales, Graham Woan, B. Schulz, S. Goßler, T. Chalermsongsak, A. Dietz, R. Taylor, Robert L. Byer, Stuart Reid, E. E. Doomes, Gavin Davies, Benno Willke, S. Roddy, L. Cunningham, John D. Scott, Bruce Allen, T. P. Bodiya, T. Reed, F. J. Raab, Tyson Littenberg, Badri Krishnan, B. Johnson, D. Kasprzyk, Alessandra Buonanno, B. Sears, Bernard F. Schutz, R. A. Mercer, Li Ju, Chad Forrest, M. A. Barton, Roman Schnabel, A. M. Sintes, C. M. Mow-Lowry, B. F. Whiting, V. V. Frolov, V. Parameshwaraiah, Helena Armandula, J. O'Dell, Ke-Xun Sun, N. Rainer, A. F. Brooks, J. Hanson, L. Sancho De La Jordana, Maria Ilaria Del Principe, Peter Fritschel, K. A. Hodge, I. Wilmut, Dustin Anderson, J. S. Kissel, I. A. Bilenko, V. Dergachev, David J. Ottaway, M. A. Arain, Gregory M. Harry, A. Stochino, S. L. Danilishin, K. L. Dooley, J. E. Brau, Guido Mueller, N. D. Smith, C. Van Den Broeck, A. A. van Veggel, D.B. DeBra, Lee Samuel Finn, Giuseppe Castaldi, V. P. Mitrofanov, Boris Hage, S. Saraf, R. Gustafson, Cheng Li, Vicky Kalogera, S. J. Waldman, D. Muhammad, Roger Jones, M. Bastarrika, Efim A. Khazanov, Moritz Mehmet, Lisa Barsotti, Supriyo Sinha, Stanislav Babak, A. J. Stein, M. Lei, Fabio Postiglione, P. Kwee, K. A. Thorne, F. Matichard, I. Yakushin, S. E. Whitcomb, M. Ito, Kevin M. Ryan, Duncan A. Brown, A. Cumming, Matthew P. Edgar, Yoichi Aso, L. Wallace, R. Frey, K. Haughian, P. J. Veitch, S. Penn, Pamela J. Russell, K. Kawabe, G. Allen, A. C. Searle, R. M. Culter, E. Hirose, Jesper Munch, S. E. Strigin, N. Fotopoulos, C. Barker, Atsushi J. Nishizawa, P. J. King, S. M. Aston, B. Rivera, Pablo Barriga, M. Mageswaran, B. Moe, J. Myers, Nick Leindecker, C. Veltkamp, B. Behnke, J. Zweizig, Kazuhiro Hayama, A. G. Wiseman, D. Talukder, C. Pankow, Stefan Hild, Andreas Freise, Vincenzo Pierro, H. R. Williams, A. Franzen, Matthew Pitkin, Shourov Chatterji, Pankaj Sarin, D. Fazi, Suvadeep Bose, Yaohui Fan, H. Müller-Ebhardt, H. J. Pletsch, T. Etzel, G. Traylor, J. Minelli, Thomas Corbitt, I. W. Harry, D. C. Coyne, Yasushi Mino, A. M. Gretarsson, I. W. Martin, R. Wooley, O. Punken, M. Frei, Z. Márka, Robert Stone, Roberto Conte, David Jones, S. Sakata, J. R. Taylor, M. C. Araya, Scott Koranda, S. Wen, Virginio Sannibale, David E. McClelland, Alberto Vecchio, H. Fehrmann, K. Flasch, L. Matone, Marco Cavaglia, L. Prokhorov, L. Tang, Jon M. Miller, J. K. Blackburn, A. Perreca, Guenakh Mitselmakher, Rubab Khan, Miquel Trias, A. Mullavey, Soumya D. Mohanty, Richard O'Shaughnessy, B. Barr, Martin P McHugh, B. J. J. Slagmolen, P. Patel, Malik Rakhmanov, J. Worden, A. W. Heptonstall, Peter R. Saulson, C. I. Torrie, G. Billingsley, Sheila Rowan, A. M. Sergeev, Mark A. Satterthwaite, J. Slutsky, Imre Bartos, C. Gray, J. Betzwieser, L. Williams, A. E. Villar, A. Sibley, N. Zotov, A. Ivanov, R. Abbott, C. Robinson, Riccardo Bassiri, V. Quetschke, Bangalore Suryanarayana Sathyaprakash, E. Myers, Kentaro Somiya, Evan Ochsner, B. Hughey, A. Rüdiger, H. Radkins, A. J. Weinstein, I. Gholami, W. Wu, P. T. Beyersdorf, M. V. van der Sluys, H. Overmier, E. Maros, Karsten Danzmann, S. P. Vyachanin, B. Lantz, R. Riesen, D. R. Ingram, E. Black, Roland Schilling, Phil Willems, J. R. Smith, R. Bork, A. Brummit, K. Mason, Kenji Numata, T. Nash, M. Brinkmann, Innocenzo M. Pinto, Slawomir Gras, M. Landry, F. Grimaldi, Nergis Mavalvala, Jerome Degallaix, J. Garofoli, G. H. Ogin, Sanjeev Dhurandhar, David Coward, D. Sellers, Thomas Cokelaer, Carlos Cepeda, Robert J. McCarthy, Linqing Wen, Christian Röver, Shuichi Sato, C. Messenger, Y. Faltas, Jan Harms, Lutz Winkelmann, Alexander Khalaidovski, Simon Chelkowski, M. Guenther, John Veitch, J. Heefner, R. Grosso, A. Grant, R. M. Martin, G. Mendell, R. M. S. Schofield, Evan Goetz, M. MacInnis, Sarah Caudill, Patrick Brady, L. Zhang, John A. Clark, Matthew Benacquista, Ping Koy Lam, Jolien D. E. Creighton, Lisa M. Goggin, S. Caride, R. Gouaty, B. Daudert, Paul Roberts, Lindy Blackburn, Karel E. Urbanek, K. Holt, D. O. Bridges, V. Sandberg, S. Meshkov, Keisuke Goda, D. Lodhia, Benjamin J. Owen, B. Bland, M. Scanlan, Xavier Siemens, G. Brunet, Seiji Kawamura, G. P. Newton, Reinhard Prix, A. Effler, Elizabeth Harstad, Erik Katsavounidis, M. Fyffe, Christopher Wipf, K. V. Tokmakov, T. Morioka, Ravi Kumar Kopparapu, K. Mailand, Maurizio Longo, M. J. Lubinski, Gabriela Gonzalez, J. M. Hallam, B. Shapiro, Osamu Miyakawa, David H. Reitze, Z. Raics, R. Mittleman, Nelson Christensen, Martin Hewitson, A. M. Cruise, John G. Dwyer, Rajesh Kumar, Vladimir B. Braginsky, H. Vahlbruch, K. Riles, V. Boschi, Joseph D. Romano, Jared Markowitz, S. Foley, Junwei Cao, Michele Vallisneri, Yi Chen, Stephen Fairhurst, E. Espinoza, M. Weinert, R. S. Amin, Hansheng Lei, K. Mors, Ik Siong Heng, S. Steplewski, Emma L. Robinson, Kasem Mossavi, G. P. Szokoly, Vuk Mandic, S. P. Tarabrin, Gregory Ely, John Nelson, J. A. Giaime, D. F. Menéndez, Jonah Kanner, J. C. Dumas, Albert Lazzarini, Tom Fricke, K. Kokeyama, P. Baker, S. Grunewald, D. J. Hosken, J. G. Rollins, Leo C. Stein, N. A. Robertson, D. Hammer, F. Seifert, R. L. Savage, P. Armor, S. R. P. Mohapatra, T. Isogai, Peter Kalmus, C. Torres, F. Y. Khalili, C. N. Colacino, I. Leonor, John K. Cannizzo, D. B. Kozak, S. B. Anderson, C. Vorvick, I. Duke, Maik Frede, A. Weidner, P. Schwinberg, H. Zur Mühlen, W. G. Anderson, A. L. Stuver, P. G. Murray, E. J. Daw, B. P. Abbott, E. K. Gustafson, D. E. Clark, S. Vass, Jian Zhang, K. D. Giardina, J. H. Hough, W. Kells, Lucía Santamaría, Douglas R. Cook, H. Rehbein, Ruslan Vaulin, Michele Zanolin, David B. Tanner, M. Sung, M. Pedraza, Maria Alessandra Papa, G. D. Hammond, H. Yamamoto, V. Raymond, N. A. Lockerbie, D. Hoyland, P. Savov, James Whelan, P. Ajith, Malcolm B. Gray, P. Raffai, Fumiko Kawazoe, J. Thacker, Soma Mukherjee, Drew Keppel, Zewu Yan, C. M. Reed, M. S. Meyer, S. Márka, A. Stroeer, Kenneth A. Strain, B. O'Reilly, Rainer Weiss, Yi Pan, R. W. P. Drever, W. W. Johnson, D. Hoak, Michael L. Gorodetsky, M. V. Plissi, David Blair, Jordan Camp, Hartmut Grote, Neil J. Cornish, P. E. Lindquist, Peter Aufmuth, J. N. Marx, Matthew Evans, L. Cardenas, J. H. Clayton, S. Klimenko, D. Ugolini, M. Lormand, A. Bullington, Rahul Biswas, L. Bogue, LSC Collaboration, The, Castaldi, G., Galdi, V., Pierro, V., Pinto, I. M., Principe, M., and The LIGO Scientific Collaboration
Subjects: Einstein@Home, Physics, Nuclear and High Energy Physics, Physics and Astronomy (miscellaneous), Gravitational wave, Frequency drift, FOS: Physical sciences, General Relativity and Quantum Cosmology (gr-qc), Astrophysics, General Relativity and Quantum Cosmology, LIGO, Neutron star, Amplitude, Pulsar, RADIATION, QC, QB, Nuclear and High Energy Physic, Dimensionless quantity
Abstract: This paper reports on an all-sky search for periodic gravitational waves from sources such as deformed isolated rapidly-spinning neutron stars. The analysis uses 840 hours of data from 66 days of the fifth LIGO science run (S5). The data was searched for quasi-monochromatic waves with frequencies f in the range from 50 Hz to 1500 Hz, with a linear frequency drift \dot{f} (measured at the solar system barycenter) in the range -f/\tau < \dot{f} < 0.1 f/\tau, for a minimum spin-down age \tau of 1000 years for signals below 400 Hz and 8000 years above 400 Hz. The main computational work of the search was distributed over approximately 100000 computers volunteered by the general public. This large computing power allowed the use of a relatively long coherent integration time of 30 hours while searching a large parameter space. This search extends Einstein@Home's previous search in LIGO S4 data to about three times better sensitivity. No statistically significant signals were found. In the 125 Hz to 225 Hz band, more than 90% of sources with dimensionless gravitational-wave strain tensor amplitude greater than 3e-24 would have been detected., Comment: 14 pages, 7 figures
Published: 2009

26. Einstein@Home search for periodic gravitational waves in LIGO S4 data

Author: J. N. Marx, D. Hoak, M. V. Plissi, Hartmut Grote, P. E. Lindquist, S. Márka, Kenneth A. Strain, B. O'Reilly, Yi Pan, Benno Willke, J. Clark, L. Ruet, Alessandra Buonanno, Soumya D. Mohanty, N. Zotov, V. Leonhardt, K. Mason, S. Giampanis, Sanichiro Yoshida, F. Ya. Khalili, Atsushi J. Nishizawa, G. McIvor, A. J. Weinstein, I. Gholami, W. Wu, P. T. Beyersdorf, M. V. van der Sluys, Michael E Zucker, Graham Woan, Robert L. Byer, S. Gossler, Sanjeev Dhurandhar, Stuart Reid, Robert Stone, R. M. Martin, A. M. Rogan, Rana X. Adhikari, J. Dickson, C. I. Torrie, Gareth Jones, M. Degree, Kipp Cannon, Bernard F. Schutz, Xavier Siemens, B. Machenschalk, F. Donovan, Li Ju, Roberto Conte, C. Aulbert, R. S. Ottens, Jan Harms, Carlos Cepeda, A. Grant, J. Hanson, L. Matone, Guido Mueller, Robert J. McCarthy, Yi Chen, L. Zhang, Martin P McHugh, B. J. J. Slagmolen, Keisuke Goda, Shuichi Sato, D. Lodhia, M. Hennessy, R. L. Ward, Erik Katsavounidis, Evan Goetz, V. Boschi, Joseph D. Romano, A. Sibley, B. Lantz, Alberto Vecchio, T. Casebolt, P. J. Sutton, Jared Markowitz, J. H. Romie, Kasem Mossavi, E. Maros, Marco Aurelio Diaz, M. J. Lubinski, John G. Dwyer, N. D. Smith, K. Bayer, L. Cunningham, Vladimir B. Braginsky, Shantanu Desai, J. S. Miller, Kip S. Thorne, S. H. Huttner, H. Vahlbruch, K. Riles, F. J. Raab, H. Bantilan, M. A. Barton, A. Dietz, Antonio Lucianetti, E. Espinoza, B. Moe, M. Weinert, R. M. S. Schofield, Benjamin J. Owen, G. Mendell, Christopher Wipf, S. Meshkov, A. Cumming, J. Ulmen, D. Ugolini, K. V. Tokmakov, S. Grunewald, D.B. DeBra, S. Saraf, R. Gustafson, Karel E. Urbanek, Martin Hewitson, Jonah Kanner, Junwei Cao, M. C. Araya, Kevin M. Ryan, Hirotaka Takahashi, Kirk McKenzie, A. Stochino, V. P. Mitrofanov, Roman Schnabel, J. E. Brau, J. C. Dumas, J. Minelli, M. Ito, M. Lormand, Subhasish Mitra, Efim A. Khazanov, A. Perreca, A. M. Gretarsson, Fabio Postiglione, P. Kwee, E. Hirose, Badri Krishnan, G. P. Newton, M. Fyffe, Gabriela Gonzalez, J. M. Hallam, F. Matichard, A. Bullington, Rahul Biswas, Antony C. Searle, C. M. Mow-Lowry, M. Rakhmanov, Guenakh Mitselmakher, H. R. Williams, Boris Hage, Nick Leindecker, J. Zweizig, P. J. Veitch, L. Bogue, H. Müller-Ebhardt, Albert Lazzarini, B. Sorazu, A. Thüring, Kenneth G. Libbrecht, Michael Landry, Sheila Rowan, Gianpietro Cagnoli, A. C. Melissinos, T. Etzel, A. F. Brooks, C. Echols, B. F. Whiting, G. Billingsley, Tom Fricke, Walter Winkler, A. S. Markosyan, T. Z. Summerscales, R. L. Savage, P. Armor, Harald Lück, Chunnong Zhao, C. Van Den Broeck, H. Rehbein, H. Mukhopadhyay, S. C. McGuire, Innocenzo M. Pinto, C. Torres, R. Taylor, D. J. A. McKechan, J. Myers, S. B. Anderson, F. Grimaldi, David H. Shoemaker, I. Yakushin, Thomas Cokelaer, S. E. Whitcomb, T. P. Bodiya, Rainer Weiss, D. M. Whitbeck, J. Slutsky, R. W. P. Drever, Ruslan Vaulin, Shourov Chatterji, D. Fazi, S. J. Waldman, Suvadeep Bose, David B. Tanner, W. W. Johnson, David Blair, Z. Márka, Yoichi Aso, L. Wallace, V. Quetschke, Jordan Camp, P. Lu, O. Burmeister, K. Kokeyama, T. Meier, J. Dalrymple, R. Frey, Richard A. Matzner, M. Sung, S. Sakata, S. Penn, Rubab Khan, Miquel Trias, Bangalore Suryanarayana Sathyaprakash, E. Black, P. Ehrens, Martin M. Fejer, J. R. Smith, R. Bork, Pamela J. Russell, Helena Armandula, P. J. King, Richard O'Shaughnessy, B. Barr, P. Patel, J. O'Dell, Ke-Xun Sun, Roger K. Route, J. Worden, L. Williams, A. Rüdiger, D. J. Hosken, K. A. Thorne, H. Fehrmann, T. Nash, K. Wette, M. R. Smith, K. L. Dooley, Timothy Evans, L. Cardenas, A. G. Wiseman, N. Rainer, Stefan Hild, J. G. Rollins, D. Sigg, S. W. Ballmer, S. Klimenko, R. Riesen, Roland Schilling, G. H. Ogin, R. M. Cutler, A. S. Sengupta, C. Robinson, D. B. Kozak, C. Vorvick, Chonghoon Kim, G. Moreno, B. Johnson, M. Pedraza, D. Kasprzyk, Benjamin William Allen, D. C. Coyne, Leo C. Stein, I. Kozhevatov, Karsten Danzmann, M. Samidi, Ravi Kumar Kopparapu, Slawomir Gras, B. Bland, Maria Alessandra Papa, G. Brunet, D. Meyers, P. Schwinberg, W. G. Anderson, V. V. Frolov, Stephen Fairhurst, Giuseppe Castaldi, V. Parameshwaraiah, Kent Blackburn, Vuk Mandic, I. Leonor, John K. Cannizzo, B. P. Abbott, E. K. Gustafson, J. A. Giaime, D. Barker, D. E. Clark, I. Duke, Supriyo Sinha, Maria Ilaria Del Principe, S. Vass, A. L. Stuver, Jian Zhang, Stanislav Babak, Duncan A. Brown, N. Fotopoulos, S. Roddy, W. Kells, A. Heptonstall, T. Petrie, D. R. Ingram, K. D. Giardina, Phil Willems, D. M. Strom, Kazuhiro Hayama, Malcolm B. Gray, A. M. Sintes, R. J. Dupuis, Lee Samuel Finn, Lisa M. Goggin, N. A. Robertson, R. Gouaty, Laura Cadonati, D. Hammer, J. Thacker, C. Pankow, Susan M. Scott, Teviet Creighton, Soma Mukherjee, Drew Keppel, Zewu Yan, F. Seifert, Chad Hanna, C. Wilkinson, P. G. Murray, J. H. Hough, Peter Kalmus, Douglas R. Cook, M. Ramsunder, Michele Zanolin, S. Wen, Sarah J. Vigeland, G. S. Allen, Peter Fritschel, H. Yamamoto, H. J. Pletsch, G. Traylor, Thomas Corbitt, N. A. Lockerbie, C. Gray, P. Savov, James Whelan, P. Ajith, E. Myers, Kentaro Somiya, Kenji Numata, M. M. Lang, K. Mailand, R. Mittleman, Nelson Christensen, K. Flasch, Andreas Freise, A. Ivanov, C. Messenger, Matthew Pitkin, R. Wooley, H. Radkins, T. Hayler, M. Bastarrika, S. P. Vyachanin, M. Brinkmann, W. Tyler, Ping Koy Lam, S. Kamat, A. Rodriguez, C. Barker, G. McIntyre, M. A. Arain, Gregory M. Harry, M. Lei, I. Wilmut, F. Kawazoe, Dustin Anderson, J. Garofoli, J. S. Kissel, Roger Jones, I. W. Martin, P. Sarin, Virginio Sannibale, David E. McClelland, K. Kawabe, S. M. Aston, David Jones, B. Rivera, Pablo Barriga, Jolien D. E. Creighton, Lindy Blackburn, M. Mageswaran, H. Ward, Peter R. Saulson, V. Sandberg, R. Abbott, D. S. Rabeling, John Veitch, Sascha Schediwy, M. MacInnis, R. S. Amin, R. A. Mercer, H. Lin, E. Chalkley, P. Shawhan, Jesper Munch, P. Charlton, I. A. Bilenko, V. Dergachev, David J. Ottaway, Seiji Kawamura, Reinhard Prix, A. Effler, Elizabeth Harstad, Osamu Miyakawa, David H. Reitze, A. E. Villar, Nergis Mavalvala, Jerome Degallaix, B. C. Barish, R. J. S. Greenhalgh, Gavin Davies, V. Kondrashov, R. DeSalvo, E. E. Doomes, L. Sancho De La Jordana, B. Sears, J. Heefner, R. Grosso, Ik Siong Heng, Emma L. Robinson, Gregory Ely, John Nelson, Vicky Kalogera, Yaohui Fan, J. Betzwieser, H. Overmier, D. Sellers, Simon Chelkowski, M. Guenther, Patrick Brady, Peter Aufmuth, The LIGO Scientific Collaboration, lSC Collaboration, The, Castaldi, G., Pinto, I. M., and Principe, M.
Subjects: Physics, Einstein@Home, Nuclear and High Energy Physics, Gravitational wave, Frequency drift, FOS: Physical sciences, General Relativity and Quantum Cosmology (gr-qc), Astrophysics, Parameter space, General Relativity and Quantum Cosmology, LIGO, Neutron star, Amplitude, Pulsar, QC
Abstract: A search for periodic gravitational waves, from sources such as isolated rapidly-spinning neutron stars, was carried out using 510 hours of data from the fourth LIGO science run (S4). The search was for quasi-monochromatic waves in the frequency range from 50 Hz to 1500 Hz, with a linear frequency drift f-dot (measured at the solar system barycenter) in the range -f/tau < f-dot < 0.1 f/tau, where the minimum spin-down age tau was 1000 years for signals below 300 Hz and 10000 years above 300 Hz. The main computational work of the search was distributed over approximately 100000 computers volunteered by the general public. This large computing power allowed the use of a relatively long coherent integration time of 30 hours, despite the large parameter space searched. No statistically significant signals were found. The sensitivity of the search is estimated, along with the fraction of parameter space that was vetoed because of contamination by instrumental artifacts. In the 100 Hz to 200 Hz band, more than 90% of sources with dimensionless gravitational wave strain amplitude greater than 1e-23 would have been detected., 29 pages, 19 figures
Published: 2009

27. Značaj projekata distribuiranog računarstva u popularizaciji fizike

Author: Kosić, Carmen
Subjects: projekti distribuiranog računarstva, popularizacija fizike, SETI@home, LHC@home, Einstein@home, Climateprediction.net
Abstract: U ovom trenutku postoji oko 60 znanstvenih projekata distribuiranog računarstva, a neki misle da će u narednih nekoliko godina taj broj biti nekoliko stotina. U diplomskom radu opisane su vrste mrežnog računarstva i navedeni su neki znanstveni projekti distribuiranog računarstva. Detaljnije su opisani SETI@home, LHC@home i Einstein@home. Analiziran je značaj ovakvih projekata za popularizaciju fizike i odnos znanost-društvo. Pripremljen je nastavni sat "Modeli klimatskih promjena" gdje se korisiti projekt Climateprediction.net. U dodatku je analizirana anketa o uporabi računala za studente profesorskih smjerova fizike na Filozofskom fakultetu U Rijeci.
Published: 2005

28. EINSTEIN@HOME DISCOVERY OF FOUR YOUNG GAMMA-RAY PULSARS IN FERMI LAT DATA

Author: Lucas Guillemot, Michael Kramer, Michael Keith, H.-B. Eggenstein, C. Aulbert, Benjamin William Allen, Cherry Ng, B. Machenschalk, Dustin Anderson, Paul S. Ray, H. Fehrmann, Holger J. Pletsch, Ramesh Karuppusamy, O. Bock, M. A. Papa, D. Hammer, X. Siemens, and David Champion
Subjects: High Energy Astrophysical Phenomena (astro-ph.HE), Einstein@Home, Physics, Astrophysics::High Energy Astrophysical Phenomena, media_common.quotation_subject, Astrophysics::Instrumentation and Methods for Astrophysics, Gamma ray, FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics, Galactic plane, 01 natural sciences, law.invention, Telescope, Supernova, Pulsar, Space and Planetary Science, law, Sky, 0103 physical sciences, Astrophysics - High Energy Astrophysical Phenomena, 010306 general physics, 010303 astronomy & astrophysics, Fermi Gamma-ray Space Telescope, media_common
Abstract: We report the discovery of four gamma-ray pulsars, detected in computing-intensive blind searches of data from the Fermi Large Area Telescope (LAT). The pulsars were found using a novel search approach, combining volunteer distributed computing via Einstein@Home and methods originally developed in gravitational-wave astronomy. The pulsars PSRs J0554+3107, J1422-6138, J1522-5735, and J1932+1916 are young and energetic, with characteristic ages between 35 and 56 kyr and spin-down powers in the range $6\times10^{34}$ - $10^{36}$ erg s$^{-1}$. They are located in the Galactic plane and have rotation rates of less than 10 Hz, among which the 2.1 Hz spin frequency of PSR J0554+3107 is the slowest of any known gamma-ray pulsar. For two of the new pulsars, we find supernova remnants coincident on the sky and discuss the plausibility of such associations. Deep radio follow-up observations found no pulsations, suggesting that all four pulsars are radio-quiet as viewed from Earth. These discoveries, the first gamma-ray pulsars found by volunteer computing, motivate continued blind pulsar searches of the many other unidentified LAT gamma-ray sources., To appear in Astrophysical Journal Letters
Published: 2013

29. ARECIBO PALFA SURVEY AND EINSTEIN@HOME: BINARY PULSAR DISCOVERY BY VOLUNTEER COMPUTING

Author: Dustin Anderson, Fredrick A. Jenet, Fernando Camilo, A. Brazier, Maura McLaughlin, Benjamin William Allen, C. Aulbert, J. M. Cordes, J. van Leeuwen, Michael Kramer, C. Messenger, Duncan R. Lorimer, N. D. R. Bhat, Benjamin Knispel, Jason W. T. Hessels, D. Hammer, A. Venkataraman, Scott M. Ransom, J. S. Deneva, Ingrid H. Stairs, David J. Nice, O. Bock, Andrew Lyne, V. M. Kaspi, H. J. Pletsch, Ben Stappers, P. Lazarus, B. Machenschalk, Fronefield Crawford, Paulo C. C. Freire, Slavko Bogdanov, Shami Chatterjee, Kevin Stovall, Reinhard Prix, M. A. Papa, X. Siemens, Gregory Desvignes, H. Fehrmann, and High Energy Astrophys. & Astropart. Phys (API, FNWI)
Subjects: Orbital elements, Einstein@Home, Physics, Solar mass, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Instrumentation and Methods for Astrophysics, FOS: Physical sciences, White dwarf, Astronomy and Astrophysics, Orbital eccentricity, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Orbital period, Astrophysics - Astrophysics of Galaxies, 01 natural sciences, Binary pulsar, Pulsar, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), 0103 physical sciences, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics
Abstract: We report the discovery of the 20.7 ms binary pulsar J1952+2630, made using the distributed computing project Einstein@Home in Pulsar ALFA survey observations with the Arecibo telescope. Follow-up observations with the Arecibo telescope confirm the binary nature of the system. We obtain a circular orbital solution with an orbital period of 9.4 hr, a projected orbital radius of 2.8 lt-s, and a mass function of f = 0.15 solar masses by analysis of spin period measurements. No evidence of orbital eccentricity is apparent; we set a 2-sigma upper limit e < 1.7e-3. The orbital parameters suggest a massive white dwarf companion with a minimum mass of 0.95 solar masses, assuming a pulsar mass of 1.4 solar masses. Most likely, this pulsar belongs to the rare class of intermediate mass binary pulsars. Future timing observations will aim to determine the parameters of this system further, measure relativistic effects, and elucidate the nature of the companion star., 5 pages, 3 figures, 1 table; updated to published version
Published: 2011

30. First low-frequency Einstein@Home all-sky search for continuous gravitational waves in Advanced LIGO data

Author: Abbott, B., Abbott, R., Abbott, T., Acernese, F., Ackley, K., Adams, C., Adams, T., Addesso, P., Adhikari, R., Adya, V., Affeldt, C., Afrough, M., Agarwal, B., Agathos, M., Agatsuma, K., Aggarwal, N., Aguiar, O., Aiello, L., Ain, A., Ajith, P., Allen, B., Allen, G., Allocca, A., Altin, P., Amato, A., Ananyeva, A., Anderson, S., Anderson, W., Antier, S., Appert, S., Arai, K., Araya, M., Areeda, J., Arnaud, N., Arun, K., Ascenzi, S., Ashton, G., Ast, M., Aston, S., Astone, P., Aufmuth, P., Aulbert, C., AultONeal, K., Avila-Alvarez, A., Babak, S., Bacon, P., Bader, M., Bae, S., Baker, P., Baldaccini, F., Ballardin, G., Ballmer, S., Banagiri, S., Barayoga, J., Barclay, S., Barish, B., Barker, D., Barone, F., Barr, B., Barsotti, L., Barsuglia, M., Barta, D., Bartlett, J., Bartos, I., Bassiri, R., Basti, A., Batch, J., Baune, C., Bawaj, M., Bazzan, M., B'ecsy, B., Beer, C., Bejger, M., Belahcene, I., Bell, A., Berger, B., Bergmann, G., Berry, C., Bersanetti, D., Bertolini, A., Betzwieser, J., Bhagwat, S., Bhandare, R., Bilenko, I., Billingsley, G., Billman, C., Birch, J., Birney, R., Birnholtz, O., Biscans, S., Bisht, A., Bitossi, M., Biwer, C., Bizouard, M., Blackburn, J., Blackman, J., Blair, C., Blair, D., Blair, R., Bloemen, S., Bock, O., Bode, N., Boer, M., Bogaert, G., Bohe, A., Bondu, F., Bonnand, R., Boom, B., Bork, R., Boschi, V., Bose, S., Bouffanais, Y., Bozzi, A., Bradaschia, C., Brady, P., Braginsky, V., Branchesi, M., Brau, J., Briant, T., Brillet, A., Brinkmann, M., Brisson, V., Brockill, P., Broida, J., Brooks, A., Brown, D., Brown, N., Brunett, S., Buchanan, C., Buikema, A., Bulik, T., Bulten, H., Buonanno, A., Buskulic, D., Buy, C., Byer, R., Cabero, M., Cadonati, L., Cagnoli, G., Cahillane, C., Bustillo, J., Callister, T., Calloni, E., Camp, J., Canepa, M., Canizares, P., Cannon, K., Cao, H., Cao, J., Capano, C., Capocasa, E., Carbognani, F., Caride, S., Carney, M., Diaz, J., Casentini, C., Caudill, S., Cavagli`a, M., Cavalier, F., Cavalieri, R., Cella, G., Cepeda, C., Baiardi, L., Cerretani, G., Cesarini, E., Chamberlin, S., Chan, M., Chao, S., Charlton, P., Chassande-Mottin, E., Chatterjee, D., Chatziioannou, K., Cheeseboro, B., Chen, H., Chen, Y., Cheng, H., Chincarini, A., Chiummo, A., Chmiel, T., Cho, H., Cho, M., Chow, J., Christensen, N., Chu, Q., Chua, A., Chua, S., Chung, A., Chung, S., Ciani, G., Ciolfi, R., Cirelli, C., Cirone, A., Clara, F., Clark, J., Cleva, F., Cocchieri, C., Coccia, E., Cohadon, P., Colla, A., Collette, C., Cominsky, L., Constancio, M., Conti, L., Cooper, S., Corban, P., Corbitt, T., Corley, K., Cornish, N., Corsi, A., Cortese, S., Costa, C., Coughlin, M., Coughlin, S., Coulon, J., Countryman, S., Couvares, P., Covas, P., Cowan, E., Coward, D., Cowart, M., Coyne, D., Coyne, R., Creighton, J., Creighton, T., Cripe, J., Crowder, S., Cullen, T., Cumming, A., Cunningham, L., Cuoco, E., Canton, T., Danilishin, S., D'Antonio, S., Danzmann, K., Dasgupta, A., Dattilo, V., Dave, I., Davier, M., Davis, D., Daw, E., Day, B., De, S., DeBra, D., Deelman, E., Degallaix, J., De Laurentis, M., Del'eglise, S., Del Pozzo, W., Denker, T., Dent, T., Dergachev, V., De Rosa, R., DeRosa, R., DeSalvo, R., Devenson, J., Devine, R., Dhurandhar, S., D'iaz, M., Di Fiore, L., Di Giovanni, M., Di Girolamo, T., Di Lieto, A., Di Pace, S., Di Palma, I., Di Renzo, F., Doctor, Z., Dolique, V., Donovan, F., Dooley, K., Doravari, S., Dorrington, I., Douglas, R., Dovale Alvarez, M., Downes, T., Drago, M., Drever, R., Driggers, J., Du, Z., Ducrot, M., Duncan, J., Dwyer, S., Edo, T., Edwards, M., Effler, A., Eggenstein, H., Ehrens, P., Eichholz, J., Eikenberry, S., Eisenstein, R., Essick, R., Etienne, Z., Etzel, T., Evans, M., Evans, T., Factourovich, M., Fafone, V., Fair, H., Fairhurst, S., Fan, X., Farinon, S., Farr, B., Farr, W., Fauchon-Jones, E., Favata, M., Fays, M., Fehrmann, H., Feicht, J., Fejer, M., Fernandez-Galiana, A., Ferrante, I., Ferreira, E., Ferrini, F., Fidecaro, F., Fiori, I., Fiorucci, D., Fisher, R., Flaminio, R., Fletcher, M., Fong, H., Forsyth, P., Forsyth, S., Fournier, J., Frasca, S., Frasconi, F., Frei, Z., Freise, A., Frey, R., Frey, V., Fries, E., Fritschel, P., Frolov, V., Fulda, P., Fyffe, M., Gabbard, H., Gabel, M., Gadre, B., Gaebel, S., Gair, J., Galloway, D., Gammaitoni, L., Ganija, M., Gaonkar, S., Garufi, F., Gaudio, S., Gaur, G., Gayathri, V., Gehrels, N., Gemme, G., Genin, E., Gennai, A., George, D., George, J., Gergely, L., Germain, V., Ghonge, S., Ghosh, A., Ghosh, S., Giaime, J., Giardina, K., Giazotto, A., Gill, K., Glover, L., Goetz, E., Goetz, R., Gomes, S., Gonz'alez, G., Castro, J., Gopakumar, A., Gorodetsky, M., Gossan, S., Gosselin, M., Gouaty, R., Grado, A., Graef, C., Granata, M., Grant, A., Gras, S., Gray, C., Greco, G., Green, A., Groot, P., Grote, H., Grunewald, S., Gruning, P., Guidi, G., Guo, X., Gupta, A., Gupta, M., Gushwa, K., Gustafson, E., Gustafson, R., Hall, B., Hall, E., Hammond, G., Haney, M., Hanke, M., Hanks, J., Hanna, C., Hannuksela, O., Hanson, J., Hardwick, T., Harms, J., Harry, G., Harry, I., Hart, M., Haster, C., Haughian, K., Healy, J., Heidmann, A., Heintze, M., Heitmann, H., Hello, P., Hemming, G., Hendry, M., Heng, I., Hennig, J., Henry, J., Heptonstall, A., Heurs, M., Hild, S., Hoak, D., Hofman, D., Holt, K., Holz, D., Hopkins, P., Horst, C., Hough, J., Houston, E., Howell, E., Hu, Y., Huerta, E., Huet, D., Hughey, B., Husa, S., Huttner, S., Huynh-Dinh, T., Indik, N., Ingram, D., Inta, R., Intini, G., Isa, H., Isac, J., Isi, M., Iyer, B., Izumi, K., Jacqmin, T., Jani, K., Jaranowski, P., Jawahar, S., Jimenez-Forteza, F., Johnson, W., Jones, D., Jones, R., Jonker, R., Ju, L., Junker, J., Kalaghatgi, C., Kalogera, V., Kandhasamy, S., Kang, G., Kanner, J., Karki, S., Karvinen, K., Kasprzack, M., Katolik, M., Katsavounidis, E., Katzman, W., Kaufer, S., Kawabe, K., K'ef'elian, F., Keitel, D., Kemball, A., Kennedy, R., Kent, C., Key, J., Khalili, F., Khan, I., Khan, S., Khan, Z., Khazanov, E., Kijbunchoo, N., Kim, C., Kim, J., Kim, W., Kim, Y., Kimbrell, S., King, E., King, P., Kirchhoff, R., Kissel, J., Kleybolte, L., Klimenko, S., Koch, P., Koehlenbeck, S., Koley, S., Kondrashov, V., Kontos, A., Korobko, M., Korth, W., Kowalska, I., Kozak, D., Krämer, C., Kringel, V., Krishnan, B., Krolak, A., Kuehn, G., Kumar, P., Kumar, R., Kumar, S., Kuo, L., Kutynia, A., Kwang, S., Lackey, B., Lai, K., Landry, M., Lang, R., Lange, J., Lantz, B., Lanza, R., Lartaux-Vollard, A., Lasky, P., Laxen, M., Lazzarini, A., Lazzaro, C., Leaci, P., Leavey, S., Lee, C., Lee, H., Lee, K., Lehmann, J., Lenon, A., Leonardi, M., Leroy, N., Letendre, N., Levin, Y., Li, T., Libson, A., Littenberg, T., Liu, J., Lo, R., Lockerbie, N., London, L., Lord, J., Lorenzini, M., Loriette, V., Lormand, M., Losurdo, G., Lough, J., Lousto, C., Lovelace, G., Lück, H., Lumaca, D., Lundgren, A., Lynch, R., Ma, Y., Macfoy, S., Machenschalk, B., MacInnis, M., Macleod, D., Magana Hernandez, I., Magana-Sandoval, F., Magana Zertuche, L., Magee, R., Majorana, E., Maksimovic, I., Man, N., Mandic, V., Mangano, V., Mansell, G., Manske, M., Mantovani, M., Marchesoni, F., Marion, F., Marka, S., Marka, Z., Markakis, C., Markosyan, A., Maros, E., Martelli, F., Martellini, L., Martin, I., Martynov, D., Mason, K., Masserot, A., Massinger, T., Masso-Reid, M., Mastrogiovanni, S., Matas, A., Matichard, F., Matone, L., Mavalvala, N., Mayani, R., Mazumder, N., McCarthy, R., McClelland, D., McCormick, S., McCuller, L., McGuire, S., McIntyre, G., McIver, J., McManus, D., McRae, T., McWilliams, S., Meacher, D., Meadors, G., Meidam, J., Mejuto-Villa, E., Melatos, A., Mendell, G., Mercer, R., Merilh, E., Merzougui, M., Meshkov, S., Messenger, C., Messick, C., Metzdorff, R., Meyers, P., Mezzani, F., Miao, H., Michel, C., Middleton, H., Mikhailov, E., Milano, L., Miller, A., Miller, B., Miller, J., Millhouse, M., Minazzoli, O., Minenkov, Y., Ming, J., Mishra, C., Mitra, S., Mitrofanov, V., Mitselmakher, G., Mittleman, R., Moggi, A., Mohan, M., Mohapatra, S., Montani, M., Moore, B., Moore, C., Moraru, D., Moreno, G., Morriss, S., Mours, B., Mow-Lowry, C., Mueller, G., Muir, A., Mukherjee, A., Mukherjee, D., Mukherjee, S., Mukund, N., Mullavey, A., Munch, J., Muniz, E., Murray, P., Napier, K., Nardecchia, I., Naticchioni, L., Nayak, R., Nelemans, G., Nelson, T., Neri, M., Nery, M., Neunzert, A., Newport, J., Newton, G., Ng, K., Nguyen, T., Nichols, D., Nielsen, A., Nissanke, S., Nitz, A., Noack, A., Nocera, F., Nolting, D., Normandin, M., Nuttall, L., Oberling, J., Ochsner, E., Oelker, E., Ogin, G., Oh, J., Oh, S., Ohme, F., Oliver, M., Oppermann, P., Oram, R., O'Reilly, B., Ormiston, R., Ortega, L., O'Shaughnessy, R., Ottaway, D., Overmier, H., Owen, B., Pace, A., Page, J., Page, M., Pai, A., Pai, S., Palamos, J., Palashov, O., Palomba, C., Pal-Singh, A., Pan, H., Pang, B., Pang, P., Pankow, C., Pannarale, F., Pant, B., Paoletti, F., Paoli, A., Papa, M., Paris, H., Parker, W., Pascucci, D., Pasqualetti, A., Passaquieti, R., Passuello, D., Patricelli, B., Pearlstone, B., Pedraza, M., Pedurand, R., Pekowsky, L., Pele, A., Penn, S., Perez, C., Perreca, A., Perri, L., Pfeiffer, H., Phelps, M., Piccinni, O., Pichot, M., Piergiovanni, F., Pierro, V., Pillant, G., Pinard, L., Pinto, I., Pitkin, M., Poggiani, R., Popolizio, P., Porter, E., Post, A., Powell, J., Prasad, J., Pratt, J., Predoi, V., Prestegard, T., Prijatelj, M., Principe, M., Privitera, S., Prix, R., Prodi, G., Prokhorov, L., Puncken, O., Punturo, M., Puppo, P., Pürrer, M., Qi, H., Qin, J., Qiu, S., Quetschke, V., Quintero, E., Quitzow-James, R., Raab, F., Rabeling, D., Radkins, H., Raffai, P., Raja, S., Rajan, C., Rakhmanov, M., Ramirez, K., Rapagnani, P., Raymond, V., Razzano, M., Read, J., Regimbau, T., Rei, L., Reid, S., Reitze, D., Rew, H., Reyes, S., Ricci, F., Ricker, P., Rieger, S., Riles, K., Rizzo, M., Robertson, N., Robie, R., Robinet, F., Rocchi, A., Rolland, L., Rollins, J., Roma, V., Romano, R., Romel, C., Romie, J., Rosi'nska, D., Ross, M., Rowan, S., Rüdiger, A., Ruggi, P., Ryan, K., Rynge, M., Sachdev, S., Sadecki, T., Sadeghian, L., Sakellariadou, M., Salconi, L., Saleem, M., Salemi, F., Samajdar, A., Sammut, L., Sampson, L., Sanchez, E., Sandberg, V., Sandeen, B., Sanders, J., Sassolas, B., Sathyaprakash, B., Saulson, P., Sauter, O., Savage, R., Sawadsky, A., Schale, P., Scheuer, J., Schmidt, E., Schmidt, J., Schmidt, P., Schnabel, R., Schofield, R., Schönbeck, A., Schreiber, E., Schuette, D., Schulte, B., Schutz, B., Schwalbe, S., Scott, J., Scott, S., Seidel, E., Sellers, D., Sengupta, A., Sentenac, D., Sequino, V., Sergeev, A., Shaddock, D., Shaffer, T., Shah, A., Shahriar, M., Shao, L., Shapiro, B., Shawhan, P., Sheperd, A., Shoemaker, D., Siellez, K., Siemens, X., Sieniawska, M., Sigg, D., Silva, A., Singer, A., Singer, L., Singh, A., Singh, R., Singhal, A., Sintes, A., Slagmolen, B., Smith, B., Smith, J., Smith, R., Son, E., Sonnenberg, J., Sorazu, B., Sorrentino, F., Souradeep, T., Spencer, A., Srivastava, A., Staley, A., Steinke, M., Steinlechner, J., Steinlechner, S., Steinmeyer, D., Stephens, B., Stone, R., Strain, K., Stratta, G., Strigin, S., Sturani, R., Stuver, A., Summerscales, T., Sun, L., Sunil, S., Sutton, P., Swinkels, B., Szczepanczyk, M., Tacca, M., Talukder, D., Tanner, D., Tapai, M., Taracchini, A., Taylor, J., Taylor, R., Theeg, T., Thomas, E., Thomas, M., Thomas, P., Thorne, K., Thrane, E., Tiwari, S., Tiwari, V., Tokmakov, K., Toland, K., Tonelli, M., Tornasi, Z., Torrie, C., T\\'oyr\\'a, D., Travasso, F., Traylor, G., Trifiro, D., Trinastic, J., Tringali, M., Trozzo, L., Tsang, K., Tse, M., Tso, R., Tuyenbayev, D., Ueno, K., Ugolini, D., Unnikrishnan, C., Urban, A., Usman, S., Vahi, K., Vahlbruch, H., Vajente, G., Valdes, G., Vallisneri, M., van Bakel, N., van Beuzekom, M., van den Brand, J., van den Broeck, C., Vander-Hyde, D., van der Schaaf, L., van Heijningen, J., van Veggel, A., Vardaro, M., Varma, V., Vass, S., Vasuth, M., Vecchio, A., Vedovato, G., Veitch, J., Veitch, P., Venkateswara, K., Venugopalan, G., Verkindt, D., Vetrano, F., Vicer'e, A., Viets, A., Vinciguerra, S., Vine, D., Vinet, J., Vitale, S., Vo, T., Vocca, H., Vorvick, C., Voss, D., Vousden, W., Vyatchanin, S., Wade, A., Wade, L., Wade, M., Walet, R., Walker, M., Wallace, L., Walsh, S., Wang, G., Wang, H., Wang, J., Wang, M., Wang, Y., Ward, R., Warner, J., Was, M., Watchi, J., Weaver, B., Wei, L., Weinert, M., Weinstein, A., Weiss, R., Wen, L., Wessel, E., Wessels, P., Westphal, T., Wette, K., Whelan, J., Whiting, B., Whittle, C., Williams, D., Williams, R., Williamson, A., Willis, J., Willke, B., Wimmer, M., Winkler, W., Wipf, C., Wittel, H., Woan, G., Woehler, J., Wofford, J., Wong, K., Worden, J., Wright, J., Wu, D., Wu, G., Yam, W., Yamamoto, H., Yancey, C., Yap, M., Yu, H., Yvert, M., zny, A., Zanolin, M., Zelenova, T., Zendri, J., Zevin, M., Zhang, L., Zhang, M., Zhang, T., Zhang, Y., Zhao, C., Zhou, M., Zhou, Z., Zhu, X., Zimmerman, A., Zucker, M., Zweizig, J., Steeghs, D., Wang, L., Massachusetts Institute of Technology. Department of Physics, Massachusetts Institute of Technology. Laboratory for Nuclear Science, MIT Kavli Institute for Astrophysics and Space Research, Aggarwal, Nancy, Barsotti, Lisa, Biscans, Sebastien, Brown, N. M., Buikema, Aaron, Donovan, Frederick J, Eisenstein, Robert Alan, Essick, Reed Clasey, Evans, Matthew J, Fernandez Galiana, Alvaro-Miguel, Fritschel, Peter K, Gras, Slawomir, Katsavounidis, Erotokritos, Kontos, Antonios, Lanza Jr, Robert K, Libson, Adam A., Lynch, Ryan Christopher, MacInnis, Myron E, Martynov, Denis, Mason, Kenneth R, Matichard, Fabrice, Mavalvala, Nergis, McCuller, Lee P, Miller, John, Mittleman, Richard K, Ray Pitambar Mohapatra, Satyanarayan, Oelker, Eric Glenn, Shoemaker, David H, Tse, Maggie, Vitale, Salvatore, Weiss, Rainer, Yam, William, Yu, Hang, Yu, Haocun, Zucker, Michael E, 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, 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 - 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Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Collège de France (CdF (institution)), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon, Ecole Superieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI Paris), Université Paris sciences et lettres (PSL), LIGO Scientific, Virgo, (Astro)-Particles Physics, 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), 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), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Université de Rennes (UR)-Centre National de la Recherche Scientifique (CNRS), Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Collège de France (CdF (institution))-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), The LIGO Scientific Collaboration, The Virgo Collaboration, Abbott, B. P., Abbott, R., Abbott, T. D., Acernese, F., Ackley, K., Adams, C., Adams, T., Addesso, P., Adhikari, R. X., Adya, V. B., Affeldt, C., Afrough, M., Agarwal, B., Agatsuma, K., Aggarwal, N., Aguiar, O. D., Aiello, L., Ain, A., Allen, B., Allen, G., Allocca, A., Altin, P. A., Amato, A., Ananyeva, A., Anderson, S. B., Anderson, W. G., Antier, S., Appert, S., Arai, K., Araya, M. C., Areeda, J. S., Arnaud, N., Ascenzi, S., Ashton, G., Ast, M., Aston, S. M., Astone, P., Aufmuth, P., Aulbert, C., Aultoneal, K., Avila-Alvarez, A., Babak, S., Bacon, P., Bader, M. K. M., Bae, S., Baker, P. T., Baldaccini, F., Ballardin, G., Ballmer, S. W., Banagiri, S., Barayoga, J. C., Barclay, S. E., Barish, B. C., Barker, D., Barone, F., Barr, B., Barsotti, L., Barsuglia, M., Barta, D., Bartlett, J., Bartos, I., Bassiri, R., Basti, A., Batch, J. C., Baune, C., Bawaj, M., Bazzan, M., Bã©csy, B., Beer, C., Bejger, M., Belahcene, I., Bell, A. S., Berger, B. K., Bergmann, G., Berry, C. P. L., Bersanetti, D., Bertolini, A., Betzwieser, J., Bhagwat, S., Bhandare, R., Bilenko, I. A., Billingsley, G., Billman, C. R., Birch, J., Birney, R., Birnholtz, O., Biscans, S., Bisht, A., Bitossi, M., Biwer, C., Bizouard, M. A., Blackburn, J. K., Blackman, J., Blair, C. D., Blair, D. G., Blair, R. M., Bloemen, S., Bock, O., Bode, N., Boer, M., Bogaert, G., Bohe, A., Bondu, F., Bonnand, R., Boom, B. A., Bork, R., Boschi, V., Bose, S., Bouffanais, Y., Bozzi, A., Bradaschia, C., Brady, P. R., Braginsky, V. B., Branchesi, M., Brau, J. E., Briant, T., Brillet, A., Brinkmann, M., Brisson, V., Brockill, P., Broida, J. E., Brooks, A. F., Brown, D. A., Brown, D. D., Brunett, S., Buchanan, C. C., Buikema, A., Bulik, T., Bulten, H. J., Buonanno, A., Buskulic, D., Buy, C., Byer, R. L., Cabero, M., Cadonati, L., Cagnoli, G., Cahillane, C., CalderÃ³n Bustillo, J., Callister, T. A., Calloni, E., Camp, J. B., Canizares, P., Cannon, K. C., Cao, H., Cao, J., Capano, C. D., Capocasa, E., Carbognani, F., Caride, S., Carney, M. F., Casanueva Diaz, J., Casentini, C., Caudill, S., Cavagliã , M., Cavalier, F., Cavalieri, R., Cella, G., Cepeda, C. B., Cerboni Baiardi, L., Cerretani, G., Cesarini, E., Chamberlin, S. J., Chan, M., Chao, S., Charlton, P., Chassande-Mottin, E., Chatterjee, D., Cheeseboro, B. D., Chen, H. Y., Chen, Y., Cheng, H. -P., Chincarini, A., Chiummo, A., Chmiel, T., Cho, H. S., Cho, M., Chow, J. H., Christensen, N., Chu, Q., Chua, A. J. K., Chua, S., Chung, A. K. W., Chung, S., Ciani, G., Ciolfi, R., Cirelli, C. E., Cirone, A., Clara, F., Clark, J. A., Cleva, F., Cocchieri, C., Coccia, E., Cohadon, P. -F., Colla, A., Collette, C. G., Cominsky, L. R., Constancio, M., Conti, L., Cooper, S. J., Corban, P., Corbitt, T. R., Corley, K. R., Cornish, N., Corsi, A., Cortese, S., Costa, C. A., Coughlin, M. W., Coughlin, S. B., Coulon, J. -P., Countryman, S. T., Couvares, P., Covas, P. B., Cowan, E. E., Coward, D. M., Cowart, M. J., Coyne, D. C., Coyne, R., Creighton, J. D. E., Creighton, T. D., Cripe, J., Crowder, S. G., Cullen, T. J., Cumming, A., Cunningham, L., Cuoco, E., Dal Canton, T., Danilishin, S. L., D'Antonio, S., Danzmann, K., Dasgupta, A., Da Silva Costa, C. F., Dattilo, V., Dave, I., Davier, M., Davis, D., Daw, E. J., Day, B., De, S., Debra, D., Deelman, E., Degallaix, J., De Laurentis, M., Delã©glise, S., Del Pozzo, W., Denker, T., Dent, T., Dergachev, V., De Rosa, Rosario., Derosa, R. T., Desalvo, R., Devenson, J., Devine, R. C., Dhurandhar, S., Dãaz, M. C., Di Fiore, L., Di Giovanni, M., Di Girolamo, T., Di Lieto, A., Di Pace, S., Di Palma, I., Di Renzo, F., Doctor, Z., Dolique, V., Donovan, F., Dooley, K. L., Doravari, S., Dorrington, I., Douglas, R., Dovale Ã lvarez, M., Downes, T. P., Drago, M., Drever, R. W. P., Driggers, J. C., Du, Z., Ducrot, M., Duncan, J., Dwyer, S. E., Edo, T. B., Edwards, M. C., Effler, A., Eggenstein, H. -B., Ehrens, P., Eichholz, J., Eikenberry, S. S., Eisenstein, R. A., Essick, R. C., Etienne, Z. B., Etzel, T., Evans, M., Evans, T. M., Factourovich, M., Fafone, V., Fair, H., Fairhurst, S., Fan, X., Farinon, S., Farr, B., Farr, W. M., Fauchon-Jones, E. J., Favata, M., Fays, M., Fehrmann, H., Feicht, J., Fejer, M. M., Fernandez-Galiana, A., Ferrante, I., Ferreira, E. C., Ferrini, F., Fidecaro, F., Fiori, I., Fiorucci, D., Fisher, R. P., Flaminio, R., Fletcher, M., Fong, H., Forsyth, P. W. F., Forsyth, S. S., Fournier, J. -D., Frasca, S., Frasconi, F., Frei, Z., Freise, A., Frey, R., Frey, V., Fries, E. M., Fritschel, P., Frolov, V. V., Fulda, P., Fyffe, M., Gabbard, H., Gabel, M., Gadre, B. U., Gaebel, S. M., Gair, J. R., Gammaitoni, L., Ganija, M. R., Gaonkar, S. G., Garufi, F., Gaudio, S., Gaur, G., Gayathri, V., Gehrels, N., Gemme, G., Genin, E., Gennai, A., George, D., George, J., Gergely, L., Germain, V., Ghonge, S., Ghosh, Abhirup, Ghosh, Archisman, Ghosh, S., Giaime, J. A., Giardina, K. D., Giazotto, A., Gill, K., Glover, L., Goetz, E., Goetz, R., Gomes, S., Gonzã¡lez, G., Gonzalez Castro, J. M., Gopakumar, A., Gorodetsky, M. L., Gossan, S. E., Gosselin, M., Gouaty, R., Grado, A., Graef, C., Granata, M., Grant, A., Gras, S., Gray, C., Greco, G., Green, A. C., Groot, P., Grote, H., Grunewald, S., Gruning, P., Guidi, G. M., Guo, X., Gupta, A., Gupta, M. K., Gushwa, K. E., Gustafson, E. K., Gustafson, R., Hall, B. R., Hall, E. D., Hammond, G., Haney, M., Hanke, M. M., Hanks, J., Hanna, C., Hannuksela, O. A., Hanson, J., Hardwick, T., Harms, J., Harry, G. M., Harry, I. W., Hart, M. J., Haster, C. -J., Haughian, K., Healy, J., Heidmann, A., Heintze, M. C., Heitmann, H., Hello, P., Hemming, G., Hendry, M., Heng, I. S., Hennig, J., Henry, J., Heptonstall, A. W., Heurs, M., Hild, S., Hoak, D., Hofman, D., Holt, K., Holz, D. E., Hopkins, P., Horst, C., Hough, J., Houston, E. A., Howell, E. J., Hu, Y. M., Huerta, E. A., Huet, D., Hughey, B., Husa, S., Huttner, S. H., Huynh-Dinh, T., Indik, N., Ingram, D. R., Inta, R., Intini, G., Isa, H. N., Isac, J. -M., Isi, M., Iyer, B. R., Izumi, K., Jacqmin, T., Jani, K., Jaranowski, P., Jawahar, S., JimÃ©nez-Forteza, F., Johnson, W. W., Jones, D. I., Jones, R., Jonker, R. J. G., Ju, L., Junker, J., Kalaghatgi, C. V., Kalogera, V., Kandhasamy, S., Kang, G., Kanner, J. B., Karki, S., Karvinen, K. S., Kasprzack, M., Katolik, M., Katsavounidis, E., Katzman, W., Kaufer, S., Kawabe, K., Kã©fã©lian, F., Keitel, D., Kemball, A. J., Kennedy, R., Kent, C., Key, J. S., Khalili, F. Y., Khan, I., Khan, S., Khan, Z., Khazanov, E. A., Kijbunchoo, N., Kim, Chunglee, Kim, J. C., Kim, W., Kim, W. S., Kim, Y. -M., Kimbrell, S. J., King, E. J., King, P. J., Kirchhoff, R., Kissel, J. S., Kleybolte, L., Klimenko, S., Koch, P., Koehlenbeck, S. M., Koley, S., Kondrashov, V., Kontos, A., Korobko, M., Korth, W. Z., Kowalska, I., Kozak, D. B., Krã¤mer, C., Kringel, V., Krishnan, B., Krã³lak, A., Kuehn, G., Kumar, P., Kumar, R., Kumar, S., Kuo, L., Kutynia, A., Kwang, S., Lackey, B. D., Lai, K. H., Landry, M., Lang, R. N., Lange, J., Lantz, B., Lanza, R. K., Lartaux-Vollard, A., Lasky, P. D., Laxen, M., Lazzarini, A., Lazzaro, C., Leaci, P., Leavey, S., Lee, C. H., Lee, H. K., Lee, H. M., Lee, H. W., Lee, K., Lehmann, J., Lenon, A., Leonardi, M., Leroy, N., Letendre, N., Levin, Y., Li, T. G. F., Libson, A., Littenberg, T. B., Liu, J., Lo, R. K. L., Lockerbie, N. A., London, L. T., Lord, J. E., Lorenzini, M., Loriette, V., Lormand, M., Losurdo, G., Lough, J. D., Lovelace, G., Lã¼ck, H., Lumaca, D., Lundgren, A. P., Lynch, R., Ma, Y., Macfoy, S., Machenschalk, B., Macinnis, M., Macleod, D. M., MagaÃ±a Hernandez, I., MagaÃ±a-Sandoval, F., MagaÃ±a Zertuche, L., Magee, R. M., Majorana, E., Maksimovic, I., Man, N., Mandic, V., Mangano, V., Mansell, G. L., Manske, M., Mantovani, M., Marchesoni, F., Marion, F., Mã¡rka, S., Mã¡rka, Z., Markakis, C., Markosyan, A. S., Maros, E., Martelli, F., Martellini, L., Martin, I. W., Martynov, D. V., Mason, K., Masserot, A., Massinger, T. J., Masso-Reid, M., Mastrogiovanni, S., Matas, A., Matichard, F., Matone, L., Mavalvala, N., Mayani, R., Mazumder, N., Mccarthy, R., Mcclelland, D. E., Mccormick, S., Mcculler, L., Mcguire, S. C., Mcintyre, G., Mciver, J., Mcmanus, D. J., Mcrae, T., Mcwilliams, S. T., Meacher, D., Meadors, G. D., Meidam, J., Mejuto-Villa, E., Melatos, A., Mendell, G., Mercer, R. A., Merilh, E. L., Merzougui, M., Meshkov, S., Messenger, C., Messick, C., Metzdorff, R., Meyers, P. M., Mezzani, F., Miao, H., Michel, C., Middleton, H., Mikhailov, E. E., Milano, L., Miller, A. L., Miller, A., Miller, B. B., Miller, J., Millhouse, M., Minazzoli, O., Minenkov, Y., Ming, J., Mishra, C., Mitra, S., Mitrofanov, V. P., Mitselmakher, G., Mittleman, R., Moggi, A., Mohan, M., Mohapatra, S. R. P., Montani, M., Moore, B. C., Moore, C. J., Moraru, D., Moreno, G., Morriss, S. R., Mours, B., Mow-Lowry, C. M., Mueller, G., Muir, A. W., Mukherjee, Arunava, Mukherjee, D., Mukherjee, S., Mukund, N., Mullavey, A., Munch, J., Muniz, E. A. M., Murray, P. G., Napier, K., Nardecchia, I., Naticchioni, L., Nayak, R. K., Nelemans, G., Nelson, T. J. N., Neri, M., Nery, M., Neunzert, A., Newport, J. M., Newton, G., Ng, K. K. Y., Nguyen, T. T., Nichols, D., Nielsen, A. B., Nissanke, S., Nitz, A., Noack, A., Nocera, F., Nolting, D., Normandin, M. E. N., Nuttall, L. K., Oberling, J., Ochsner, E., Oelker, E., Ogin, G. H., Oh, J. J., Oh, S. H., Ohme, F., Oliver, M., Oppermann, P., Oram, Richard J., O'Reilly, B., Ormiston, R., Ortega, L. F., O'Shaughnessy, R., Ottaway, D. J., Overmier, H., Owen, B. J., Pace, A. E., Page, J., Page, M. A., Pai, A., Pai, S. A., Palamos, J. R., Palashov, O., Palomba, C., Pal-Singh, A., Pan, H., Pang, B., Pang, P. T. H., Pankow, C., Pannarale, F., Pant, B. C., Paoletti, F., Paoli, A., Papa, M. A., Paris, H. R., Parker, W., Pascucci, D., Pasqualetti, A., Passaquieti, R., Passuello, D., Patricelli, B., Pearlstone, B. L., Pedraza, M., Pedurand, R., Pekowsky, L., Pele, A., Penn, S., Perez, C. J., Perreca, A., Perri, L. M., Pfeiffer, H. P., Phelps, M., Piccinni, O. J., Pichot, M., Piergiovanni, F., Pierro, V., Pillant, G., Pinard, L., Pinto, I. M., Pitkin, M., Poggiani, R., Popolizio, P., Porter, E. K., Post, A., Powell, J., Prasad, J., Pratt, J. W. W., Predoi, V., Prestegard, T., Prijatelj, M., Principe, M., Privitera, S., Prix, R., Prodi, G. A., Prokhorov, L. G., Puncken, O., Punturo, M., Puppo, P., Pã¼rrer, M., Qi, H., Qin, J., Qiu, S., Quetschke, V., Quintero, E. A., Quitzow-James, R., Raab, F. J., Rabeling, D. S., Radkins, H., Raffai, P., Raja, S., Rajan, C., Rakhmanov, M., Ramirez, K. E., Rapagnani, P., Raymond, V., Razzano, M., Read, J., Regimbau, T., Rei, L., Reid, S., Reitze, D. H., Rew, H., Reyes, S. D., Ricci, F., Ricker, P. M., Rieger, S., Riles, K., Rizzo, M., Robertson, N. A., Robie, R., Robinet, F., Rocchi, A., Rolland, L., Rollins, J. G., Roma, V. J., Romano, R., Romel, C. L., Romie, J. H., Rosiå ska, D., Ross, M. P., Rowan, S., Rã¼diger, A., Ruggi, P., Ryan, K., Rynge, M., Sachdev, S., Sadecki, T., Sadeghian, L., Sakellariadou, M., Salconi, L., Saleem, M., Salemi, F., Samajdar, A., Sammut, L., Sampson, L. M., Sanchez, E. J., Sandberg, V., Sandeen, B., Sanders, J. R., Sassolas, B., Sathyaprakash, B. S., Saulson, P. R., Sauter, O., Savage, R. L., Sawadsky, A., Schale, P., Scheuer, J., Schmidt, E., Schmidt, J., Schmidt, P., Schnabel, R., Schofield, R. M. S., Schã¶nbeck, A., Schreiber, E., Schuette, D., Schulte, B. W., Schutz, B. F., Schwalbe, S. G., Scott, J., Scott, S. M., Seidel, E., Sellers, D., Sen Gupta, A. S., Sentenac, D., Sequino, V., Sergeev, A., Shaddock, D. A., Shaffer, T. J., Shah, A. A., Shahriar, M. S., Shao, L., Shapiro, B., Shawhan, P., Sheperd, A., Shoemaker, D. H., Shoemaker, D. M., Siellez, K., Siemens, X., Sieniawska, M., Sigg, D., Silva, A. D., Singer, A., Singer, L. P., Singh, A., Singh, R., Singhal, A., Sintes, A. M., Slagmolen, B. J. J., Smith, B., Smith, J. R., Smith, R. J. E., Son, E. J., Sonnenberg, J. A., Sorazu, B., Sorrentino, F., Souradeep, T., Spencer, A. P., Srivastava, A. K., Staley, A., Steinke, M., Steinlechner, J., Steinlechner, S., Steinmeyer, D., Stephens, B. C., Stone, R., Strain, K. A., Stratta, G., Strigin, S. E., Sturani, R., Stuver, A. L., Summerscales, T. Z., Sun, L., Sunil, S., Sutton, P. J., Swinkels, B. L., Szczepaå czyk, M. J., Tacca, M., Talukder, D., Tanner, D. B., Tã¡pai, M., Taracchini, A., Taylor, J. A., Taylor, R., Theeg, T., Thomas, E. G., Thomas, M., Thomas, P., Thorne, K. A., Thorne, K. S., Thrane, E., Tiwari, S., Tiwari, V., Tokmakov, K. V., Toland, K., Tonelli, M., Tornasi, Z., Torrie, C. I., Tã¶yrã¤, D., Travasso, F., Traylor, G., Trifirã², D., Trinastic, J., Tringali, M. C., Trozzo, L., Tsang, K. W., Tse, M., Tso, R., Tuyenbayev, D., Ueno, K., Ugolini, D., Unnikrishnan, C. S., Urban, A. L., Usman, S. A., Vahi, K., Vahlbruch, H., Vajente, G., Valdes, G., Vallisneri, M., Van Bakel, N., Van Beuzekom, M., Van Den Brand, J. F. J., Van Den Broeck, C., Vander-Hyde, D. C., Van Der Schaaf, L., Van Heijningen, J. V., Van Veggel, A. A., Vardaro, M., Varma, V., Vass, S., Vasãºth, M., Vecchio, A., Vedovato, G., Veitch, J., Veitch, P. J., Venkateswara, K., Venugopalan, G., Verkindt, D., Vetrano, F., Vicerã©, A., Viets, A. D., Vinciguerra, S., Vine, D. J., Vinet, J. -Y., Vitale, S., Vo, T., Vocca, H., Vorvick, C., Voss, D. V., Vousden, W. D., Vyatchanin, S. P., Wade, A. R., Wade, L. E., Wade, M., Walet, R., Walker, M., Wallace, L., Walsh, S., Wang, G., Wang, H., Wang, J. Z., Wang, M., Wang, Y. -F., Wang, Y., Ward, R. L., Warner, J., Was, M., Watchi, J., Weaver, B., Wei, L. -W., Weinert, M., Weinstein, A. J., Weiss, R., Wen, L., Wessel, E. K., Weã els, P., Westphal, T., Wette, K., Whelan, J. T., Whiting, B. F., Whittle, C., Williams, D., Williams, R. D., Williamson, A. R., Willis, J. L., Willke, B., Wimmer, M. H., Winkler, W., Wipf, C. C., Wittel, H., Woan, G., Woehler, J., Wofford, J., Wong, K. W. K., Worden, J., Wright, J. L., Wu, D. S., Wu, G., Yam, W., Yamamoto, H., Yancey, C. C., Yap, M. J., Yvert, M., Zadroå¼ny, A., Zanolin, M., Zelenova, T., Zendri, J. -P., Zevin, M., Zhang, L., Zhang, M., Zhang, T., Zhang, Y. -H., Zhao, C., Zhou, M., Zhou, Z., Zhu, S. J., Zhu, X. J., Zucker, M. E., Zweizig, J., and Anderson, D. P.
Subjects: Einstein@Home, Gravitational-wave observatory, Physics and Astronomy (miscellaneous), Astronomy, Theory of Condensed Matter, continuous sources, gr-qc, media_common.quotation_subject, FOS: Physical sciences, General Relativity and Quantum Cosmology (gr-qc), Astrophysics, Low frequency, 01 natural sciences, neutron stars, General Relativity and Quantum Cosmology, CW, all-sky search, LIGO, 0103 physical sciences, Advanced LIGO, Advanced LIGO, gravitational waves, neutron stars, continuous sources, neutron star, 010303 astronomy & astrophysics, STFC, QC, QB, media_common, Physics, Physique, 010308 nuclear & particles physics, Gravitational wave, gravitational radiation, RCUK, gravitational radiation detector, detector: sensitivity, Neutron star, frequency: low, Amplitude, gravitational waves, Physics and Astronomy, Sky, gravitational radiation: emission, [PHYS.GRQC]Physics [physics]/General Relativity and Quantum Cosmology [gr-qc]
Abstract: We report results of a deep all-sky search for periodic gravitational waves from isolated neutron stars in data from the first Advanced LIGO observing run. This search investigates the low frequency range of Advanced LIGO data, between 20 and 100 Hz, much of which was not explored in initial LIGO. The search was made possible by the computing power provided by the volunteers of the Einstein@Home project. We find no significant signal candidate and set the most stringent upper limits to date on the amplitude of gravitational wave signals from the target population, corresponding to a sensitivity depth of 48.7 [1/Hz]. At the frequency of best strain sensitivity, near 100 Hz, we set 90% confidence upper limits of 1.8×10-25. At the low end of our frequency range, 20 Hz, we achieve upper limits of 3.9×10-24. At 55 Hz we can exclude sources with ellipticities greater than 10-5 within 100 pc of Earth with fiducial value of the principal moment of inertia of 1038 kg m2., 0, info:eu-repo/semantics/published

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30 results on '"Einstein@Home"'

1. Einstein@Home all-sky search for continuous gravitational waves in LIGO O2 public data

2. Discovery of a Gamma-Ray Black Widow Pulsar by GPU-accelerated Einstein@Home

3. The Einstein@Home Survey for Gamma-ray Pulsars

4. Results from an Einstein@Home search for continuous gravitational waves from Cassiopeia A, Vela Jr. and G347.3

5. Improved post-processing in searches for continuous gravitational waves and a model for transient continuous gravitational wave emission from neutron star glitches

6. Improved post-processing in searches for continuous gravitational waves and a model for transient continuous gravitational wave emission from neutron star glitches

7. Einstein@Home discovers a radio-quiet gamma-ray millisecond pulsar

8. The Einstein@Home Gamma-ray Pulsar Survey. II. Source Selection, Spectral Analysis, and Multiwavelength Follow-up

9. First low-frequency Einstein@Home all-sky search for continuous gravitational waves in Advanced LIGO data

10. Results of the deepest all-sky survey for continuous gravitational waves on LIGO S6 data running on the Einstein@Home volunteer distributed computing project

11. Einstein@Home Discovery of a Double Neutron Star Binary in the PALFA Survey

12. Hierarchical follow-up of subthreshold candidates of an all-sky Einstein@Home search for continuous gravitational waves on LIGO sixth science run data

13. Einstein@Home search for continuous gravitational waves from Cassiopeia A

14. Results of the deepest all-sky survey for continuous gravitational waves on LIGO S6 data running on the Einstein@Home volunteer distributed computing project

15. Results of an all-sky high-frequency Einstein@Home search for continuous gravitational waves in LIGO's fifth science run

16. Results of the Deepest All-Sky Survey for Continuous Gravitational Waves on LIGO S6 Data Running on the Einstein@Home Volunteer Distributed Computing Project

17. An Exploration of CUDA and CBEA for a Gravitational Wave Data- Analysis Application (Einstein@Home)

18. Einstein@Home Discovery of a PALFA Millisecond Pulsar in an Eccentric Binary Orbit

19. THE EINSTEIN@HOME GAMMA-RAY PULSAR SURVEY. I. SEARCH METHODS, SENSITIVITY, AND DISCOVERY OF NEW YOUNG GAMMA-RAY PULSARS

20. Fully coherent follow-up of continuous gravitational-wave candidates: An application to Einstein@Home results

21. Einstein@Home all-sky search for periodic gravitational waves in LIGO S5 data

22. The Einstein@Home search for radio pulsars and PSR J2007+2722 discovery

23. Einstein@Home Discovery of 24 Pulsars in the Parkes Multi-beam Pulsar Survey

24. An Exploration of CUDA and CBEA for Einstein@Home

25. Einstein@Home search for periodic gravitational waves in early S5 LIGO data

26. Einstein@Home search for periodic gravitational waves in LIGO S4 data

27. Značaj projekata distribuiranog računarstva u popularizaciji fizike

28. EINSTEIN@HOME DISCOVERY OF FOUR YOUNG GAMMA-RAY PULSARS IN FERMI LAT DATA

29. ARECIBO PALFA SURVEY AND EINSTEIN@HOME: BINARY PULSAR DISCOVERY BY VOLUNTEER COMPUTING

30. First low-frequency Einstein@Home all-sky search for continuous gravitational waves in Advanced LIGO data

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