e-Article
GW190521: A Binary Black Hole Merger with a Total Mass of 150 M_{⊙}.
Document Type
article
Author
Abbott, R; Abbott, TD; Abraham, S; Acernese, F; Ackley, K; Adams, C; Adhikari, RX; Adya, VB; Affeldt, C; Agathos, M; Agatsuma, K; Aggarwal, N; Aguiar, OD; Aich, A; Aiello, L; Ain, A; Ajith, P; Akcay, S; Allen, G; Allocca, A; Altin, PA; Amato, A; Anand, S; Ananyeva, A; Anderson, SB; Anderson, WG; Angelova, SV; Ansoldi, S; Antier, S; Appert, S; Arai, K; Araya, MC; Areeda, JS; Arène, M; Arnaud, N; Aronson, SM; Arun, KG; Asali, Y; Ascenzi, S; Ashton, G; Aston, SM; Astone, P; Aubin, F; Aufmuth, P; AultONeal, K; Austin, C; Avendano, V; Babak, S; Bacon, P; Badaracco, F; Bader, MKM; Bae, S; Baer, AM; Baird, J; Baldaccini, F; Ballardin, G; Ballmer, SW; Bals, A; Balsamo, A; Baltus, G; Banagiri, S; Bankar, D; Bankar, RS; Barayoga, JC; Barbieri, C; Barish, BC; Barker, D; Barkett, K; Barneo, P; Barone, F; Barr, B; Barsotti, L; Barsuglia, M; Barta, D; Bartlett, J; Bartos, I; Bassiri, R; Basti, A; Bawaj, M; Bayley, JC; Bazzan, M; Bécsy, B; Bejger, M; Belahcene, I; Bell, AS; Beniwal, D; Benjamin, MG; Bentley, JD; Bergamin, F; Berger, BK; Bergmann, G; Bernuzzi, S; Berry, CPL; Bersanetti, D; Bertolini, A; Betzwieser, J; Bhandare, R; Bhandari, AV; Bidler, J; Biggs, E
Source
Physical review letters. 125(10)
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Language
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} M_{⊙} and 66_{-18}^{+17} 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_{-16}^{+28} M_{⊙}, 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}.