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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. http://resolver.caltech.edu/CaltechAUTHORS:20180813-091037636

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Abstract

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
Related URLs:
URLURL TypeDescription
https://doi.org/10.1103/physrevd.98.044020DOIArticle
https://arxiv.org/abs/1712.00784arXivDiscussion Paper
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
Funders:
Funding AgencyGrant Number
National Natural Science Foundation of China11633001
National Natural Science Foundation of China11673008
NSFPHY-1708212
Royal SocietyUNSPECIFIED
NSFPHY-1404569
NSFPHY-1708213
Record Number:CaltechAUTHORS:20180813-091037636
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20180813-091037636
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:88784
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:13 Aug 2018 17:09
Last Modified:13 Aug 2018 17:09

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