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Stochastic gravitational-wave background from spin loss of black holes

Fan, Xi-Long and Chen, Yanbei (2018) Stochastic gravitational-wave background from spin loss of black holes. Physical Review D, 98 (4). Art. No. 044020. ISSN 2470-0010. doi:10.1103/physrevd.98.044020.

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Although spinning black holes are shown to be stable in vacuum in general relativity, exotic mechanisms have been speculated to convert the spin energy of black holes into gravitational waves. Such waves may be very weak in amplitude, since the spin-down could take a long time, therefore a direct search may not be feasible. We propose to search for the stochastic red gravitational-wave background associated with the spin-down, and we relate the level of this background to the formation rate of spinning black holes from the merger of binary black holes, as well as the energy spectrum of waves emitted by the spin-down process. We argue that current LIGO-Virgo observations are not inconsistent with the existence of a spin-down process, as long as it is slow enough. On the other hand, the background may still detectable as long as a moderate fraction of spin energy is emitted within Hubble time. This stochastic background could be one interesting target of next generation GW detector network, such as LIGO Voyager, and could be extracted from total stochastic background.

Item Type:Article
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URLURL TypeDescription Paper
Chen, Yanbei0000-0002-9730-9463
Additional Information:© 2018 American Physical Society. (Received 3 December 2017; published 13 August 2018) We thank A. Matas and Xingjiang Zhu for valuable comments. X. F. is supported by Natural Science Foundation of China under Grants (No. 11633001, No. 11673008) and Newton International Fellowship Alumni Follow on Funding. Y. C. is supported by U.S. NSF Grants No. PHY-1708212, No. PHY-1404569, and No. PHY-1708213.
Group:TAPIR, Walter Burke Institute for Theoretical Physics, Astronomy Department
Funding AgencyGrant Number
National Natural Science Foundation of China11633001
National Natural Science Foundation of China11673008
Issue or Number:4
Record Number:CaltechAUTHORS:20180813-091037636
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:88784
Deposited By: George Porter
Deposited On:13 Aug 2018 17:09
Last Modified:16 Nov 2021 00:29

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