articleThe Astrophysical Journal LettersSep 1, 2020LVBRONZE OA

Properties and Astrophysical Implications of the 150 M ⊙ Binary Black Hole Merger GW190521

RAR. AbbottTDT. D. AbbottSAS. AbrahamFAF. AcerneseKAK. Ackley
Indexed inarxivcrossrefdoaj

Abstract

Abstract The gravitational-wave signal GW190521 is consistent with a binary black hole (BBH) merger source at redshift 0.8 with unusually high component masses, 85 − 14 + 21 M ⊙ and 66 − 18 + 17 M ⊙ , compared to previously reported events, and shows mild evidence for spin-induced orbital precession. The primary falls in the mass gap predicted by (pulsational) pair-instability supernova theory, in the approximate range 65–120 M ⊙ . The probability that at least one of the black holes in GW190521 is in that range is 99.0%. The final mass of the merger ( 142 − 16 + 28 M ⊙ ) classifies it as an intermediate-mass black hole. Under the assumption of a quasi-circular BBH coalescence, we…

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Authors

1254
  • RA
    R. AbbottCorresponding
  • TD
    T. D. Abbott
  • SA
    S. Abraham
  • FA
    F. Acernese
  • KA
    K. Ackley

Topics & keywords

Keywords
  • Binary black hole
  • Binary number
  • Black hole (networking)
  • Redshift
  • General relativity
  • Coalescence (physics)
  • Consistency (knowledge bases)
  • Supernova
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