GW190521: A Binary Black Hole Merger with a Total Mass of 150 M

Abbott, R and Abbott, T D and Abraham, S and Somala, S N and et al, . (2020) GW190521: A Binary Black Hole Merger with a Total Mass of 150 M. Physical Review Letters, 125 (101102). ISSN 0031-9007

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Abstract

On 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 85-14+21 Mm and 66-18+17 Mm (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 Mm. We calculate the mass of the remnant to be 142-16+28 Mm, which can be considered an intermediate mass black hole (IMBH). The luminosity distance of the source is 5.3-2.6+2.4 Gpc, corresponding to a redshift of 0.82-0.34+0.28. The inferred rate of mergers similar to GW190521 is 0.13-0.11+0.30 Gpc-3 yr-1.

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IITH Creators:
IITH CreatorsORCiD
Somala, S NUNSPECIFIED
Item Type: Article
Uncontrolled Keywords: Black hole mass, Credible interval, Detector networks, False alarm rate, Gravitational-wave signals, Intermediate mass black holes, Quasi circulars, Short durations
Subjects: Civil Engineering > Geosystems
Civil Engineering > Earthquake Engineering
Divisions: Department of Civil Engineering
Depositing User: . LibTrainee 2021
Date Deposited: 24 Mar 2021 10:33
Last Modified: 24 Mar 2021 10:33
URI: http://raiith.iith.ac.in/id/eprint/7710
Publisher URL: https://doi.org/10.1103/PhysRevLett.125.101102
OA policy: https://v2.sherpa.ac.uk/id/publication/13640
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