Journal
PHYSICAL REVIEW D
Volume 99, Issue 10, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.99.104033
Keywords
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Funding
- United States National Science Foundation (NSF)
- Science and Technology Facilities Council (STFC) of the United Kingdom
- Max-Planck-Society (MPS)
- State of Niedersachsen/Germany
- Australian Research Council
- Netherlands Organisation for Scientific Research
- Council of Scientific and Industrial Research of India
- Department of Science and Technology, India
- Science AMP
- Engineering Research Board (SERB), India
- Ministry of Human Resource Development, India
- Spanish Agencia Estatal de Investigacion
- Vicepresidencia i Conselleria d'Innovacio, Recerca i Turisme
- Conselleria d'Educacio i Universitat del Govern de les Illes Balears
- Conselleria d'Educacio, Investigacio, Cultura i Esport de la Generalitat Valenciana
- National Science Centre of Poland
- Swiss National Science Foundation (SNSF)
- Russian Foundation for Basic Research
- Russian Science Foundation
- European Commission
- European Regional Development Funds (ERDF)
- Royal Society
- Scottish Funding Council
- Scottish Universities Physics Alliance
- Hungarian Scientific Research Fund (OTKA)
- National Research, Development and Innovation Office Hungary (NKFI)
- National Research Foundation of Korea
- Province of Ontario through the Ministry of Economic Development and Innovation
- Natural Science and Engineering Research Council Canada
- Canadian Institute for Advanced Research
- Brazilian Ministry of Science, Technology, Innovations, and Communications
- International Center for Theoretical Physics South American Institute for Fundamental Research (ICTP-SAIFR)
- Research Grants Council of Hong Kong
- National Natural Science Foundation of China (NSFC)
- Leverhulme Trust
- Research Corporation
- Ministry of Science and Technology (MOST), Taiwan
- Kavli Foundation
- Lyon Institute of Origins (LIO)
- Industry Canada
- EPSRC [2161515] Funding Source: UKRI
- STFC [1945971, ST/K005014/1, Gravitational Waves, PPA/G/S/2002/00652, ST/N00003X/1, ST/V001396/1, ST/K005014/2, ST/N005406/1, ST/R00045X/1, ST/N005406/2, 1802888, 1938553, ST/N000633/1, ST/I006269/1, 1653089, 1654298, ST/N005430/1, ST/T000147/1, ST/K000845/1, ST/N005422/1, 2142081, 1947165, ST/S000305/1, ST/H002006/1, ST/M005844/1, ST/N000072/1, 1947199, ST/J00166X/1, 2039699, 1802894] Funding Source: UKRI
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We present the results of a search for long-duration gravitational-wave transients in the data from the Advanced LIGO second observation run; we search for gravitational-wave transients of 2-500 s duration in the 24-2048 Hz frequency band with minimal assumptions about signal properties such as waveform morphologies, polarization, sky location or time of occurrence. Signal families covered by these search algorithms include fallback accretion onto neutron stars, broadband chirps from innermost stable circular orbit waves around rotating black holes, eccentric inspiral-merger-ringdown compact binary coalescence waveforms, and other models. The second observation run totals about 118.3 days of coincident data between November 2016 and August 2017. We find no significant events within the parameter space that we searched, apart from the already-reported binary neutron star merger GW170817. We thus report sensitivity limits on the root-sum-square strain amplitude h(rss) at 50% efficiency. These sensitivity estimates are an improvement relative to the first observing run and also done with an enlarged set of gravitational-wave transient waveforms. Overall, the best search sensitivity is h(rss)(50%) = 2.7 x 10(-22) Hz(-1/2) for a millisecond magnetar model. For eccentric compact binary coalescence signals, the search sensitivity reaches h(rss)(50%) = 9.6 x 10(-22) Hz(-1/2).
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