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Free keywords:
General Relativity and Quantum Cosmology, gr-qc, Astrophysics, High Energy Astrophysical Phenomena, astro-ph.HE, Astrophysics, Instrumentation and Methods for Astrophysics, astro-ph.IM
Abstract:
On September 14, 2015 at 09:50:45 UTC the two detectors of the Laser
Interferometer Gravitational-wave Observatory (LIGO) simultaneously observed
the binary black hole merger GW150914. We report the results of a
matched-filter search using relativistic models of compact-object binaries that
recovered GW150914 as the most significant event during the coincident
observations between the two LIGO detectors from September 12 to October 20,
2015. GW150914 was observed with a matched filter signal-to-noise ratio of 24
and a false alarm rate estimated to be less than 1 event per 203 000 years,
equivalent to a significance greater than 5.1 {\sigma}.