Abstract
Results are presented from a semicoherent search for continuous gravitational waves from the brightest low-mass X-ray binary, Scorpius X-1, using data collected during the first Advanced LIGO observing run. The search combines a frequency domain matched filter (Bessel-weighted F-statistic) with a hidden Markov model to track wandering of the neutron star spin frequency. No evidence of gravitational waves is found in the frequency range 60-650 Hz. Frequentist 95% confidence strain upper limits, h095%=4.0×10-25, 8.3×10-25, and 3.0×10-25 for electromagnetically restricted source orientation, unknown polarization, and circular polarization, respectively, are reported at 106 Hz. They are ≤10 times higher than the theoretical torque-balance limit at 106 Hz.
Original language | English |
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Journal | Physical Review D |
Volume | 95 |
Issue number | 12 |
DOIs | |
State | Published - 15 Jun 2017 |
Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2017 American Physical Society. us.
Funding
The authors gratefully acknowledge the support of the United States National Science Foundation (NSF) for the construction and operation of the LIGO Laboratory and Advanced LIGO as well as the Science and Technology Facilities Council (STFC) of the United Kingdom, the Max-Planck-Society (MPS), and the State of Niedersachsen/Germany for support of the construction of Advanced LIGO and construction and operation of the GEO600 detector. Additional support for Advanced LIGO was provided by the Australian Research Council. The authors gratefully acknowledge the Italian Istituto Nazionale di Fisica Nucleare (INFN), the French Centre National de la Recherche Scientifique (CNRS) and the Foundation for Fundamental Research on Matter supported by the Netherlands Organization for Scientific Research, for the construction and operation of the Virgo detector and the creation and support of the EGO consortium. The authors also gratefully acknowledge research support from these agencies as well as by the Council of Scientific and Industrial Research of India, Department of Science and Technology, India, Science & Engineering Research Board (SERB), India, Ministry of Human Resource Development, India, the Spanish Ministerio de Economia y Competitividad, the Vicepresidncia i Conselleria d Innovacion, Recerca i Turisme and the Conselleria d Educacion i Universitat del Govern de les Illes Balears, the National Science Centre of Poland, the European Commission, the Royal Society, the Scottish Funding Council, the Scottish Universities Physics Alliance, the Hungarian Scientific Research Fund (OTKA), the Lyon Institute of Origins (LIO), the National Research Foundation of Korea, Industry Canada and the Province of Ontario through the Ministry of Economic Development and Innovation, the Natural Science and Engineering Research Council Canada, Canadian Institute for Advanced Research, the Brazilian Ministry of Science, Technology, and Innovation, International Center for Theoretical Physics South American Institute for Fundamental Research (ICTP-SAIFR), Russian Foundation for Basic Research, the Leverhulme Trust, the Research Corporation, Ministry of Science and Technology (MOST), Taiwan and the Kavli Foundation. The authors gratefully acknowledge the support of the NSF, STFC, MPS, INFN, CNRS and the State of Niedersachsen/Germany for provision of computational resources. This is LIGO document LIGO-P1700019.
Funders | Funder number |
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Not added | ST/I006285/1, ST/N000064/1 |
Brazilian Ministry of Science, Technology, and Innovation | |
Department of Science and Technology, India, Science & Engineering Research Board | |
International Center for Theoretical Physics South American Institute for Fundamental Research | |
National Research Foundation of Korea, Industry Canada | |
National Science Centre of Poland | |
Natural Science and Engineering Research Council Canada | |
Netherlands Organization for Scientific Research | |
Vicepresidncia i Conselleria d Innovacion, Recerca i Turisme | |
National Science Foundation | 1104371, 1607585, 1308527, 1404139, 1505629, 1506360, 1608423 |
Directorate for Mathematical and Physical Sciences | |
Kavli Foundation | |
Canadian Institute for Advanced Research | |
Centre Eau Terre Environnement, Institut National de la Recherche Scientifique | |
Ontario Ministry of Economic Development and Innovation | |
Science and Technology Facilities Council | ST/N00003X/1, ST/J000019/1, ST/P000258/1, ST/H002006/1, ST/L000954/1, ST/M005844/1, PP/F00110X/1, ST/J000302/1, 1653071, ST/N000072/1, ST/N005481/1, ST/L000911/1, ST/N005422/1, ST/N005716/1, PPA/G/S/2002/00652, ST/J000361/1, ST/N005406/1, Gravitational Waves, ST/G504284/1, ST/K000845/1, ST/L003465/1, ST/I006242/1, 1654298, ST/M006735/1, ST/I006269/1, ST/N000080/1, ST/I001085/1, ST/L000946/1, ST/N000633/1, ST/I001026/1, ST/J00166X/1, ST/N005430/1 |
Leverhulme Trust | |
Royal Society | |
Scottish Funding Council | |
Scottish Universities Physics Alliance | |
European Commission | |
Australian Research Council | |
Council of Scientific and Industrial Research, India | |
Science and Engineering Research Board | |
Russian Foundation for Basic Research | |
Ministerio de Economía y Competitividad | |
Hungarian Scientific Research Fund | |
Instituto Nazionale di Fisica Nucleare | |
Ministry of Human Resource Development | |
Centre National de la Recherche Scientifique | |
Ministerio de Ciencia y Tecnología | |
Universitat de les Illes Balears | |
Istituto Nazionale di Fisica Nucleare |