GW190521: A Binary Black Hole Merger with a Total Mass of $150 ~ M_{\odot}$
Creators: name: The LIGO Scientific Collaboration
name: The Virgo Collaboration
name: Abbott, R.
name: Abbott, T. D.
name: Abraham, S.
name: Acernese, F.
name: Ackley, K.
name: Adams, C.
name: Adhikari, R. X.
name: Adya, V. B.
name: Affeldt, C.
name: Agathos, M.
name: Agatsuma, K.
name: Aggarwal, N.
name: Aguiar, O. D.
name: Aich, A.
name: Aiello, L.
name: Ain, A.
name: Ajith, P.
name: Akcay, S.
name: Allen, G.
name: Allocca, A.
name: Altin, P. A.
name: Amato, A.
name: Anand, S.
name: Ananyeva, A.
name: Anderson, S. B.
name: Anderson, W. G.
name: Angelova, S. V.
name: Ansoldi, S.
name: Antier, S.
name: Appert, S.
name: Arai, K.
name: Araya, M. C.
name: Areeda, J. S.
name: Arène, M.
name: Arnaud, N.
name: Aronson, S. M.
name: Arun, K. G.
name: Asali, Y.
name: Ascenzi, S.
name: Ashton, G.
name: Aston, S. M.
name: Astone, P.
name: Aubin, F.
name: Aufmuth, P.
name: AultONeal, K.
name: Austin, C.
name: Avendano, V.
name: Babak, S.
name: Bacon, P.
name: Badaracco, F.
name: Bader, M. K. M.
name: Bae, S.
name: Baer, A. M.
name: Baird, J.
name: Baldaccini, F.
name: Ballardin, G.
name: Ballmer, S. W.
name: Bals, A.
name: Balsamo, A.
name: Baltus, G.
name: Banagiri, S.
name: Bankar, D.
name: Bankar, R. S.
name: Barayoga, J. C.
name: Barbieri, C.
name: Barish, B. C.
name: Barker, D.
name: Barkett, K.
name: Barneo, P.
name: Barone, F.
name: Barr, B.
name: Barsotti, L.
name: Barsuglia, M.
name: Barta, D.
name: Bartlett, J.
name: Bartos, I.
name: Bassiri, R.
name: Basti, A.
name: Bawaj, M.
name: Bayley, J. C.
name: Bazzan, M.
name: Bécsy, B.
name: Bejger, M.
name: Belahcene, I.
name: Bell, A. S.
name: Beniwal, D.
name: Benjamin, M. G.
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name: Bergamin, F.
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name: Bertolini, A.
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Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: 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 $85^{+21}_{-14} M_{\odot}$ and $66^{+17}_{-18} M_{\odot}$ (90 % credible intervals). We infer that the primary black hole mass lies within the gap produced by (pulsational) pair-instability supernova processes, and has only a 0.32 % probability of being below $65 M_{\odot}$. We calculate the mass of the remnant to be $142^{+28}_{-16} M_{\odot}$, 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 $0.13^{+0.30}_{-0.11}\,\mathrm{Gpc}^{-3}\,\mathrm{yr}^{-1}$.
description: Supplementary Material at https://dcc.ligo.org/LIGO-P2000020/Public