Eccentric binary neutron star mergers

Roman Gold, Sebastiano Bernuzzi, Marcus Thierfelder, Bernd Brugmann, Frans Pretorius

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Abstrakt

Neutron star binaries offer a rich phenomenology in terms of gravitational waves and merger remnants. However, most general relativistic studies have been performed for nearly circular binaries, with the exception of head-on collisions. We present the first numerical relativity investigation of mergers of eccentric equal-mass neutron star binaries that probes the regime between head-on and circular. In addition to gravitational waves generated by the orbital motion, we find that the signal also contains a strong component due to stellar oscillations (
f
modes) induced by tidal forces, extending a classical result for Newtonian binaries. The merger can lead to rather massive disks on the order of 10% of the total initial mass.
OriginalsprogEngelsk
Artikelnummer121501
TidsskriftPhysical Review D
Vol/bind86
Udgave nummer12
ISSN2470-0010
DOI
StatusUdgivet - 2012
Udgivet eksterntJa

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