GW170814: A Three-Detector Observation of Gravitational Waves from a Binary Black Hole Coalescence.
Phys Rev Lett
; 119(14): 141101, 2017 Oct 06.
Article
in En
| MEDLINE
| ID: mdl-29053306
ABSTRACT
On August 14, 2017 at 10â¶3043 UTC, the Advanced Virgo detector and the two Advanced LIGO detectors coherently observed a transient gravitational-wave signal produced by the coalescence of two stellar mass black holes, with a false-alarm rate of â²1 in 27 000 years. The signal was observed with a three-detector network matched-filter signal-to-noise ratio of 18. The inferred masses of the initial black holes are 30.5_{-3.0}^{+5.7}M_{â} and 25.3_{-4.2}^{+2.8}M_{â} (at the 90% credible level). The luminosity distance of the source is 540_{-210}^{+130} Mpc, corresponding to a redshift of z=0.11_{-0.04}^{+0.03}. A network of three detectors improves the sky localization of the source, reducing the area of the 90% credible region from 1160 deg^{2} using only the two LIGO detectors to 60 deg^{2} using all three detectors. For the first time, we can test the nature of gravitational-wave polarizations from the antenna response of the LIGO-Virgo network, thus enabling a new class of phenomenological tests of gravity.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Type of study:
Qualitative_research
Language:
En
Journal:
Phys Rev Lett
Year:
2017
Document type:
Article
Affiliation country:
Estados Unidos