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Solar-mass primordial black holes explain NANOGrav hint of gravitational waves

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Title
Solar-mass primordial black holes explain NANOGrav hint of gravitational waves
Author(s)
Kazunori Kohri; TakahiroTerada
Publication Date
2021-02
Journal
PHYSICS LETTERS B, v.813, pp.1 - 8
Publisher
ELSEVIER
Abstract
The NANOGrav collaboration for the pulsar timing array (PTA) observation recently announced evidence of an isotropic stochastic process, which may be the first detection of the stochastic gravitational-wave (GW) background. We discuss the possibility that the signal is caused by the second-order GWs associated with the formation of solar-mass primordial black holes (PBHs). This possibility can be tested by future interferometer-type GW observations targeting the stochastic GWs from merger events of solar-mass PBHs as well as by updates of PTA observations. (C) 2020 The Author(s). Published by Elsevier B.V.
URI
https://pr.ibs.re.kr/handle/8788114/9178
DOI
10.1016/j.physletb.2020.136040
ISSN
0370-2693
Appears in Collections:
Center for Fundamental Theory(순수물리이론 연구단) > 1. Journal Papers (저널논문)
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