Detecting black-hole binary clustering via the second-generation gravitational-wave detectors
Abstract
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.
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.Attached Files
Published - PhysRevD.94.024013.pdf
Submitted - 1603.08072v2.pdf
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Additional details
- Eprint ID
- 68947
- Resolver ID
- CaltechAUTHORS:20160711-091007108
- 26-142
- Japan Society for the Promotion of Science (JSPS)
- PHY-1055103
- NSF
- StronGrHEP-690904
- European Research Council (ERC)
- 15H05889
- Ministry of Education, Culture, Sports, Science and Technology (MEXT)
- Created
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2016-07-11Created from EPrint's datestamp field
- Updated
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2021-11-11Created from EPrint's last_modified field