Eccentric binary neutron star mergers

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

Research output: Contribution to journalArticle

64 Scopus citations

Abstract

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.

Original languageEnglish (US)
Article number121501
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume86
Issue number12
DOIs
StatePublished - Dec 20 2012

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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