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  News from horizons in binary black hole mergers

Prasad, V., Gupta, A., Bose, S., Krishnan, B., & Schnetter, E. (2020). News from horizons in binary black hole mergers. Physical Review Letters, 125: 121101. doi:10.1103/PhysRevLett.125.121101.

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 Urheber:
Prasad, Vaishak, Autor
Gupta, Anshu, Autor
Bose, Sukanta1, Autor           
Krishnan, Badri1, Autor           
Schnetter, Erik, Autor
Affiliations:
1Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24011              

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Schlagwörter: General Relativity and Quantum Cosmology, gr-qc
 Zusammenfassung: In a binary black hole merger, it is known that the inspiral portion of the
waveform corresponds to two distinct horizons orbiting each other, and the
merger and ringdown signals correspond to the final horizon being formed and
settling down to equilibrium. However, we still lack a detailed understanding
of the relation between the horizon geometry in these three regimes and the
observed waveform. Here we show that the well known inspiral chirp waveform has
a clear counterpart on black hole horizons, namely, the shear of the outgoing
null rays at the horizon. We demonstrate that the shear behaves very much like
a compact binary coalescence waveform with increasing frequency and amplitude.
Furthermore, the parameters of the system estimated from the horizon agree with
those estimated from the waveform. This implies that even though black hole
horizons are causally disconnected from us, assuming general relativity to be
true, we can potentially infer some of their detailed properties from
gravitational wave observations.

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 Datum: 2020-03-132020
 Publikationsstatus: Erschienen
 Seiten: 7 Pages, 1 Figure
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: arXiv: 2003.06215
DOI: 10.1103/PhysRevLett.125.121101
 Art des Abschluß: -

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Titel: Physical Review Letters
  Kurztitel : Phys. Rev. Lett.
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Woodbury, N.Y. : American Physical Society
Seiten: - Band / Heft: 125 Artikelnummer: 121101 Start- / Endseite: - Identifikator: ISSN: 0031-9007
CoNE: https://pure.mpg.de/cone/journals/resource/954925433406_1