期刊
ASTRONOMY & ASTROPHYSICS
卷 659, 期 -, 页码 -出版社
EDP SCIENCES S A
DOI: 10.1051/0004-6361/202141452
关键词
gravitational waves; stars; black holes; black hole physics
资金
- NSF's LIGO Laboratory - National Science Foundation
- Australian Research Council
- EGO consortium
- 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
- 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'Innovacio, Universitats, Ciencia i Societat Digital de la Generalitat Valenciana
- CERCA Programme Generalitat de Catalunya, Spain
- National Science Centre of Poland
- Foundation for Polish Science (FNP)
- 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)
- French Lyon Institute of Origins (LIO)
- Belgian Fonds de la Recherche Scientifique (FRS-FNRS)
- Actions de Recherche Concertees (ARC)
- Fonds Wetenschappelijk Onderzoek - Vlaanderen (FWO), Belgium
- Paris ile-de-France Region
- National Research, Development and Innovation Office Hungary (NKFIH)
- National Research Foundation of Korea
- Natural Science and Engineering Research Council Canada
- Canadian Foundation for Innovation (CFI)
- Brazilian Ministry of Science, Technology, and Innovations
- 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
- United States Department of Energy
- Kavli Foundation
- MEXT
- JSPS Leading-edge Research Infrastructure Program
- JSPS [26000005, 2905, JP17H06358, JP17H06361, JP17H06364, 17H06133]
- JSPS Core-to-Core Program A. Advanced Research Networks
- Institute for Cosmic Ray Research
- University of Tokyo
- National Research Foundation (NRF)
- KISTI-GSDC in Korea
- Academia Sinica (AS)
- AS Grid Center (ASGC)
- Ministry of Science and Technology (MoST) in Taiwan [AS-CDA-105-M06]
- Advanced Technology Center (ATC) of NAOJ
- Mechanical Engineering Center of KEK
- Grants-in-Aid for Scientific Research [2905] Funding Source: KAKEN
This article reports on a dedicated search of data from the third observing run for intermediate-mass black hole (IMBH) binary mergers. Although some marginal candidates were found, there was no sufficiently significant signal to indicate the detection of further IMBH mergers. The sensitivity of different search methods and the resulting upper limits on astrophysical merger rates were quantified.
Intermediate-mass black holes (IMBHs) span the approximate mass range 100-10(5) M-circle dot, between black holes (BHs) that formed by stellar collapse and the supermassive BHs at the centers of galaxies. Mergers of IMBH binaries are the most energetic gravitational-wave sources accessible by the terrestrial detector network. Searches of the first two observing runs of Advanced LIGO and Advanced Virgo did not yield any significant IMBH binary signals. In the third observing run (O3), the increased network sensitivity enabled the detection of GW190521, a signal consistent with a binary merger of mass similar to 150 M-circle dot providing direct evidence of IMBH formation. Here, we report on a dedicated search of O3 data for further IMBH binary mergers, combining both modeled (matched filter) and model-independent search methods. We find some marginal candidates, but none are sufficiently significant to indicate detection of further IMBH mergers. We quantify the sensitivity of the individual search methods and of the combined search using a suite of IMBH binary signals obtained via numerical relativity, including the effects of spins misaligned with the binary orbital axis, and present the resulting upper limits on astrophysical merger rates. Our most stringent limit is for equal mass and aligned spin BH binary of total mass 200 M-circle dot and effective aligned spin 0.8 at 0.056 Gpc(-3) yr(-1) (90% confidence), a factor of 3.5 more constraining than previous LIGO-Virgo limits. We also update the estimated rate of mergers similar to GW190521 to 0.08 Gpc(-3) yr(-1).
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