Cardiff University | Prifysgol Caerdydd ORCA
Online Research @ Cardiff 
WelshClear Cookie - decide language by browser settings

Aligned spin neutron star-black hole mergers: a gravitational waveform amplitude model

Pannarale Greco, Francesco ORCID: https://orcid.org/0000-0002-7537-3210, Berti, Emanuele, Kyutoku, Koutarou, Lackey, Benjamin D. and Shibata, Masaru 2015. Aligned spin neutron star-black hole mergers: a gravitational waveform amplitude model. Physical Review D 92 (8) , 084050. 10.1103/PhysRevD.92.084050

Full text not available from this repository.

Abstract

The gravitational radiation emitted during the merger of a black hole with a neutron star is rather similar to the radiation from the merger of two black holes when the neutron star is not tidally disrupted. When tidal disruption occurs, gravitational waveforms can be broadly classified in two groups, depending on the spatial extent of the disrupted material. Extending previous work by some of us, here we present a phenomenological model for the gravitational waveform amplitude in the frequency domain encompassing the three possible outcomes of the merger: no tidal disruption, and “mild” and “strong” tidal disruption. The model is calibrated to 134 general-relativistic numerical simulations of binaries where the black hole spin is either aligned or antialigned with the orbital angular momentum. All simulations were produced using the SACRA code and piecewise polytropic neutron star equations of state. The present model can be used to determine when black-hole binary waveforms are sufficient for gravitational-wave detection, to extract information on the equation of state from future gravitational-wave observations, to obtain more accurate estimates of black hole-neutron star merger event rates, and to determine the conditions under which these systems are plausible candidates as central engines of gamma-ray bursts and macronovae/kilonovae.

Item Type: Article
Date Type: Published Online
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QC Physics
Publisher: American Physical Society
ISSN: 1550-7998
Last Modified: 31 Oct 2022 09:05
URI: https://orca.cardiff.ac.uk/id/eprint/79747

Citation Data

Cited 35 times in Scopus. View in Scopus. Powered By Scopus® Data

Actions (repository staff only)

Edit Item Edit Item