150291_GW190521.pdf (1.41 MB)
GW190521: a binary black hole merger with a total mass of 150 M⊙
journal contribution
posted on 2023-05-21, 08:08 authored by Abbott, R, Abbott, TD, Karelle SiellezKarelle SiellezOn May 21, 2019 at 03:02:29 UTC Advanced LIGO and Advanced Virgo observed a short duration gravitational-wave signal, GW190521, with a three-detector network signal-to-noise ratio of 14.7, and an estimated false-alarm rate of 1 in 4900 yr using a search sensitive to generic transients. If GW190521 is from a quasicircular binary inspiral, then the detected signal is consistent with the merger of two black holes with masses of 85+21−14 M⊙ and 66+17−18 M⊙ (90% credible intervals). We infer that the primary black hole mass lies within the gap produced by (pulsational) pair-instability supernova processes, with only a 0.32% probability of being below 65 M⊙. We calculate the mass of the remnant to be 142+28−16 M⊙, which can be considered an intermediate mass black hole (IMBH). The luminosity distance of the source is 5.3+2.4−2.6 Gpc, corresponding to a redshift of 0.82+0.28−0.34. The inferred rate of mergers similar to GW190521 is 0.13+0.300.11 Gpc−3yr−1.
History
Publication title
Physical Review LettersVolume
125Article number
101102Number
101102Pagination
1-17ISSN
0031-9007Department/School
School of Natural SciencesPublisher
American Physical SocPlace of publication
One Physics Ellipse, College Pk, USA, Md, 20740-3844Rights statement
© 2022 American Physical Society. All rights reserved. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. (https://creativecommons.org/licenses/by/4.0/)Repository Status
- Open