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DOE OSTI · 1993341

Thermal Effects in Binary Neutron Star Mergers

Fields, Jacob (ORCID:0000000157051712)·Prakash, Aviral (ORCID:0000000167343137)·Breschi, Matteo (ORCID:0000000233273676)·Radice, David (ORCID:0000000169821008)·Bernuzzi, Sebastiano (ORCID:0000000223340935)·Schneider, André da Silva (ORCID:0000000308497691)
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Abstract

Abstract We study the impact of finite-temperature effects in numerical-relativity simulations of binary neutron star mergers with microphysical equations of state and neutrino transport in which we vary the effective nucleon masses in a controlled way. We find that, as the specific heat is increased, the merger remnants become colder and more compact due to the reduced thermal pressure support. Using a full Bayesian analysis, we demonstrate that this effect will be measurable in the postmerger gravitational wave signal with next-generation observatories at signal-to-noise ratios of 15.

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73 NUCLEAR PHYSICS AND RADIATION PHYSICSCompact objectsGravitational wave sourcesGravitational wavesNeutron starsRelativistic binary stars

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Fields, Jacob (ORCID:0000000157051712), Prakash, Aviral (ORCID:0000000167343137), Breschi, Matteo (ORCID:0000000233273676), Radice, David (ORCID:0000000169821008), Bernuzzi, Sebastiano (ORCID:0000000223340935), Schneider, André da Silva (ORCID:0000000308497691). 2023-07-31. Thermal Effects in Binary Neutron Star Mergers. https://doi.org/10.3847/2041-8213%2Face5b2

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