paper

Properties of the Binary Black Hole Merger GW150914

arXiv:1602.03840 · doi:10.1103/PhysRevLett.116.241102

Abstract

On 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 and ; 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 (at 90% probability). The luminosity distance to the source is Mpc, corresponding to a redshift assuming standard cosmology. The source location is constrained to an annulus section of deg, primarily in the southern hemisphere. The binary merges into a black hole of and spin . This black hole is significantly more massive than any other inferred from electromagnetic observations in the stellar-mass regime.

19 pages, 6 figures

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