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Detecting black-hole binary clustering via the second-generation gravitational-wave detectors

Namikawa, Toshiya and Nishizawa, Atsushi and Taruya, Atsushi (2016) Detecting black-hole binary clustering via the second-generation gravitational-wave detectors. Physical Review D, 94 (2). Art. No. 024013. ISSN 2470-0010. doi:10.1103/PhysRevD.94.024013.

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The first discovery of the gravitational-wave (GW) event, GW150914, suggests a higher merger rate of black-hole (BH) binaries. If this is true, a number of BH binaries will be observed via the second-generation GW detectors, and the statistical properties of the observed BH binaries can be scrutinized. A naive but important question to ask is whether the spatial distribution of BH binaries faithfully traces the matter inhomogeneities in the Universe or not. Although the BH binaries are thought to be formed inside the galaxies in most of the scenarios, there is no observational evidence to confirm such a hypothesis. Here, we estimate how well the second-generation GW detectors can statistically confirm the BH binaries to be a tracer of the large-scale structure by looking at the auto- and cross-correlation of BH binaries with photometric galaxies and weak-lensing measurements, finding that, with a 3 year observation, the >3σ detection of a nonzero signal is possible if the BH merger rate today is n˙0≳100  Gpc^(−3) yr^(−1) and the clustering bias of BH binaries is b_(BH,0)≳1.5.

Item Type:Article
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URLURL TypeDescription Paper
Nishizawa, Atsushi0000-0003-3562-0990
Additional Information:© 2016 American Physical Society. Received 1 April 2016; published 5 July 2016. T. N. is supported by JSPS Postdoctoral Fellowships for Research Abroad No. 26-142. A. N. is supported by NSF CAREER Grant No. PHY-1055103 and the H2020-MSCA-RISE-2015 Grant No. StronGrHEP-690904. A. T. acknowledges the support from MEXT KAKENHI No. 15H05889.
Funding AgencyGrant Number
Japan Society for the Promotion of Science (JSPS)26-142
European Research Council (ERC)StronGrHEP-690904
Ministry of Education, Culture, Sports, Science and Technology (MEXT)15H05889
Issue or Number:2
Record Number:CaltechAUTHORS:20160711-091007108
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Official Citation:Detecting black-hole binary clustering via the second-generation gravitational-wave detectors Toshiya Namikawa, Atsushi Nishizawa, and Atsushi Taruya Phys. Rev. D 94, 024013 (2016) – Published 5 July 2016
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:68947
Deposited By: Ruth Sustaita
Deposited On:11 Jul 2016 16:56
Last Modified:11 Nov 2021 04:07

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