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Properties of the Binary Black Hole Merger GW150914On September 14, 2015, the Laser Interferometer Gravitational-Wave Observatory (LIGO) detected a gravitational-wave transient (GW150914); we characterize the properties of the source and its parameters. The data around the time of the event were analyzed coherently across the LIGO network using a suite of accurate waveform models that describe gravitational waves from a compact binary system in general relativity. GW150914 was produced by a nearly equal mass binary black hole of masses 36(+5/-4) solar mass and 29(+4/-4) solar mass; for each parameter we report the median value and the range of the 90% credible interval. The dimensionless spin magnitude of the more massive black hole is bound to be less than 0.7 (at 90% probability). The luminosity distance to the source is 410(+160/-180) Mpc, corresponding to a redshift 0.09(+0.03/−0.04) assuming standard cosmology. The source location is constrained to an annulus section of 610 sq deg, primarily in the southern hemisphere. The binary merges into a black hole of mass 62(+4/−4) solar mass and spin 0.67(+0.05/−0.07). This black hole is significantly more massive than any other inferred from electromagnetic observations in the stellar-mass regime.
Document ID
Document Type
Reprint (Version printed in journal)
Abbott, B. P. (California Inst. of Tech. Pasadena, CA, United States)
Abbott, R. (California Inst. of Tech. Pasadena, CA, United States)
Abbott, T. D. (Louisiana State Univ. Baton Rouge, LA, United States)
Abernathy, M. R. (California Inst. of Tech. Pasadena, CA, United States)
Acernese, F. (Salerno Univ. Italy)
Ackley, K. (Florida Univ. Gainesville, FL, United States)
Adams, C. (LIGO Livingston Observatory Livingston, LA, United States)
Adams, T. (Grenoble-1 Univ. Annecy, France)
Addesso, P. (Salerno Univ. Italy)
Camp, J. B. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Date Acquired
April 17, 2017
Publication Date
June 14, 2016
Publication Information
Publication: Physical Review Letters
Volume: 116
Issue: 24
ISSN: 0031-9007
Subject Category
Report/Patent Number
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