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Distinguishing the nature of comparable-mass neutron star binary systems with multimessenger observations: GW170817 case study

Research output: Contribution to journalArticlepeer-review

  • Tanja Hinderer
  • Samaya Nissanke
  • Francois Foucart
  • Kenta Hotokezaka
  • Trevor Vincent
  • Mansi Kasliwal
  • Patricia Schmidt
  • Dr Andrew Robert Williamson
  • David A. Nichols
  • Matthew D. Duez
  • Lawrence E. Kidder
  • Harold P. Pfeiffer
  • Mark A. Scheel
The discovery of GW170817 with gravitational waves (GWs) and electromagnetic (EM) radiation is prompting new questions in strong-gravity astrophysics. Importantly, it remains unknown whether the progenitor of the merger comprised two neutron stars (NSs) or a NS and a black hole (BH). Using new numerical-relativity simulations and incorporating modeling uncertainties, we produce novel GW and EM observables for NS-BH mergers with similar masses. A joint analysis of GW and EM measurements reveals that if GW170817 is a NS-BH merger, ≲40% of the binary parameters consistent with the GW data are compatible with EM observations.
Original languageEnglish
Number of pages8
JournalPhysical Review D
Volume100
Issue number6
DOIs
Publication statusPublished - 30 Sep 2019

Documents

  • PhysRevD.100.063021

    Rights statement: Tanja Hinderer et.al. 'Distinguishing the nature of comparable-mass neutron star binary systems with multimessenger observations: GW170817 case study.' Phys. Rev. D. 100, 063021. © 2019 American Physical Society. All rights reserved.

    Final published version, 1.49 MB, PDF document

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