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

Tanja Hinderer; Samaya Nissanke; Francois Foucart; Kenta Hotokezaka; Trevor Vincent; Mansi Kasliwal; Patricia Schmidt; Andrew R. Williamson; David A. Nichols; Matthew D. Duez; Lawrence E. Kidder; Harald P. Pfeiffer; Mark A. Scheel

doi:10.1103/PhysRevD.100.063021

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

Tanja Hinderer, Samaya Nissanke, Francois Foucart, Kenta Hotokezaka, Trevor Vincent, Mansi Kasliwal, Patricia Schmidt, Andrew R. Williamson, David A. Nichols, Matthew D. Duez, Lawrence E. Kidder, Harald P. Pfeiffer, Mark A. Scheel

Theoretical Physics

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Research output: Contribution to journal › Article › Academic › peer-review

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 binary parameters consistent with the GW data are compatible with EM observations.

Original language	English
Journal	Physical Review D
Volume	100
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevD.100.063021
Publication status	Published - 30 Sept 2019

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Hinderer, T., Nissanke, S., Foucart, F., Hotokezaka, K., Vincent, T., Kasliwal, M., Schmidt, P., Williamson, A. R., Nichols, D. A., Duez, M. D., Kidder, L. E., Pfeiffer, H. P., & Scheel, M. A. (2019). Distinguishing the nature of comparable-mass neutron star binary systems with multimessenger observations: GW170817 case study. Physical Review D, 100(6). https://doi.org/10.1103/PhysRevD.100.063021

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

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 binary parameters consistent with the GW data are compatible with EM observations.",

author = "Tanja Hinderer and Samaya Nissanke and Francois Foucart and Kenta Hotokezaka and Trevor Vincent and Mansi Kasliwal and Patricia Schmidt and Williamson, \{Andrew R.\} and Nichols, \{David A.\} and Duez, \{Matthew D.\} and Kidder, \{Lawrence E.\} and Pfeiffer, \{Harald P.\} and Scheel, \{Mark A.\}",

year = "2019",

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doi = "10.1103/PhysRevD.100.063021",

language = "English",

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Hinderer, T, Nissanke, S, Foucart, F, Hotokezaka, K, Vincent, T, Kasliwal, M, Schmidt, P, Williamson, AR, Nichols, DA, Duez, MD, Kidder, LE, Pfeiffer, HP & Scheel, MA 2019, 'Distinguishing the nature of comparable-mass neutron star binary systems with multimessenger observations: GW170817 case study', Physical Review D, vol. 100, no. 6. https://doi.org/10.1103/PhysRevD.100.063021

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T2 - GW170817 case study

AU - Hinderer, Tanja

AU - Nissanke, Samaya

AU - Foucart, Francois

AU - Hotokezaka, Kenta

AU - Vincent, Trevor

AU - Kasliwal, Mansi

AU - Schmidt, Patricia

AU - Williamson, Andrew R.

AU - Nichols, David A.

AU - Duez, Matthew D.

AU - Kidder, Lawrence E.

AU - Pfeiffer, Harald P.

AU - Scheel, Mark A.

PY - 2019/9/30

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AB - 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.

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DO - 10.1103/PhysRevD.100.063021

M3 - Article

SN - 0556-2821

VL - 100

JO - Physical Review D

JF - Physical Review D

IS - 6

ER -

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

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