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arXiv · 2107.00450

GW200105 and GW200115 are compatible with a scenario of primordial black hole binary coalescences

Sai Wang·Zhi-Chao Zhao
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Abstract

Two gravitational wave events, i.e. GW200105 and GW200115, were observed by the Advanced LIGO and Virgo detectors recently. In this work, we show that they can be explained by a scenario of primordial black hole binaries that are formed in the early Universe. The merger rate predicted by such a scenario could be consistent with the one estimated from LIGO and Virgo, even if primordial black holes constitute a fraction of cold dark matter. The required abundance of primordial black holes is compatible with the existing upper limits from microlensing, caustic crossing and cosmic microwave background observations.

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Sai Wang, Zhi-Chao Zhao. 2021-07-01. GW200105 and GW200115 are compatible with a scenario of primordial black hole binary coalescences. https://doi.org/10.1140/epjc%2Fs10052-021-09981-1

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