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  Relevance of tidal effects and post-merger dynamics for binary neutron star parameter estimation

Dudi, R., Pannarale, F., Dietrich, T., Hannam, M., Bernuzzi, S., Ohme, F., et al. (2018). Relevance of tidal effects and post-merger dynamics for binary neutron star parameter estimation. Physical Review D, 98(8): 084061. doi:10.1103/PhysRevD.98.084061.

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 Urheber:
Dudi, Reetika, Autor
Pannarale, Francesco, Autor
Dietrich, Tim, Autor
Hannam, Mark, Autor
Bernuzzi, Sebastiano, Autor
Ohme, Frank1, Autor           
Bruegmann, Bernd, Autor
Affiliations:
1Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_24013              

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Schlagwörter: General Relativity and Quantum Cosmology, gr-qc
 Zusammenfassung: Measurements of the properties of binary neutron star systems from
gravitational-wave observations require accurate theoretical models for such
signals. However, current models are incomplete, as they do not take into
account all of the physics of these systems: some neglect possible tidal
effects, others neglect spin-induced orbital precession, and no existing model
includes the post-merger regime consistently. In this work, we explore the
importance of two physical ingredients: tidal interactions during the inspiral
and the imprint of the post-merger stage. We use complete
inspiral--merger--post-merger waveforms constructed from a tidal
effective-one-body approach and numerical-relativity simulations as signals
against which we perform parameter estimates with waveform models of standard
LIGO-Virgo analyses. We show that neglecting tidal effects does not lead to
appreciable measurement biases in masses and spin for typical observations
(small tidal deformability and signal-to-noise ratio $\sim$ 25). However, with
increasing signal-to-noise ratio or tidal deformability there are biases in the
estimates of the binary parameters. The post-merger regime, instead, has no
impact on gravitational-wave measurements with current detectors for the
signal-to-noise ratios we consider.

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 Datum: 2018-08-292018
 Publikationsstatus: Erschienen
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Titel: Physical Review D
  Andere : Phys. Rev. D.
Genre der Quelle: Zeitschrift
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Affiliations:
Ort, Verlag, Ausgabe: Lancaster, Pa. : American Physical Society
Seiten: - Band / Heft: 98 (8) Artikelnummer: 084061 Start- / Endseite: - Identifikator: ISSN: 0556-2821
CoNE: https://pure.mpg.de/cone/journals/resource/111088197762258