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001-es BibID:	BIBFORM093364
035-os BibID:	(cikkazonosító)043015 (WoS)000562002800003 (Scopus)85091109691
Első szerző:	Abbott, Rich
Cím:	GW190412: Observation of a binary-black-hole coalescence with asymmetric masses / R. Abbott, Edit Fenyvesi, The LIGO Scientific Collaboration, The Virgo Collaboration
Dátum:	2020
ISSN:	2470-0010 2470-0029
Megjegyzések:	We report the observation of gravitational waves from a binary-black-hole coalescence during the first two weeks of LIGO's and Virgo's third observing run. The signal was recorded on April 12, 2019 at 05?30?44 UTC with a network signal-to-noise ratio of 19. The binary is different from observations during the first two observing runs most notably due to its asymmetric masses: a ?30 M? black hole merged with a ?8 M? black hole companion. The more massive black hole rotated with a dimensionless spin magnitude between 0.22 and 0.60 (90% probability). Asymmetric systems are predicted to emit gravitational waves with stronger contributions from higher multipoles, and indeed we find strong evidence for gravitational radiation beyond the leading quadrupolar order in the observed signal. A suite of tests performed on GW190412 indicates consistency with Einstein's general theory of relativity. While the mass ratio of this system differs from all previous detections, we show that it is consistent with the population model of stellar binary black holes inferred from the first two observing runs.
Tárgyszavak:	Természettudományok Fizikai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk gravitációshullám-detektor Virgo
Megjelenés:	Physical Review D. - 102 : 4 (2020), p. 1-29. -
További szerzők:	Fenyvesi Edit (1986-) (fizikus) The LIGO Scientific Collaboration The Virgo Collaboration
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