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Journal Article

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

MPS-Authors
/persons/resource/persons192101

Hinderer,  Tanja
Astrophysical and Cosmological Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

/persons/resource/persons213835

Pfeiffer,  Harald P.
Astrophysical and Cosmological Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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1808.03836.pdf
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Citation

Hinderer, T., Nissanke, S., Foucart, F., Hotokezaka, K., Vincent, T., Kasliwal, M., et al. (2019). Distinguishing the nature of comparable-mass neutron star binary systems with multimessenger observations: GW170817 case study. Physical Review D, 100: 063021. Retrieved from http://arxiv.org/abs/1808.03836.


Cite as: https://hdl.handle.net/21.11116/0000-0002-0FE4-D
Abstract
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 GW parameters are compatible with EM observations.