Аннотация
On September 14, 2015 at 09:50:45 UTC the two detectors of the Laser
Interferometer Gravitational-Wave Observatory simultaneously observed a
transient gravitational-wave signal. The signal sweeps upwards in frequency
from 35 to 250 Hz with a peak gravitational-wave strain of $1.0 \times
10^-21$. It matches the waveform predicted by general relativity for the
inspiral and merger of a pair of black holes and the ringdown of the resulting
single black hole. The signal 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. The source lies at a luminosity distance of $410^+160_-180$ Mpc
corresponding to a redshift $z = 0.09^+0.03_-0.04$. In the source frame,
the initial black hole masses are $36^+5_-4 M_ødot$ and $29^+4_-4
M_ødot$, and the final black hole mass is $62^+4_-4 M_ødot$, with
$3.0^+0.5_-0.5 M_c^2$ radiated in gravitational waves. All
uncertainties define 90% credible intervals.These observations demonstrate the
existence of binary stellar-mass black hole systems. This is the first direct
detection of gravitational waves and the first observation of a binary black
hole merger.
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