TY - JOUR
T1 - Impact of moment-based, energy integrated neutrino transport on microphysics and ejecta in binary neutron star mergers
AU - Espino, Pedro L.
AU - Radice, David
AU - Zappa, Francesco
AU - Gamba, Rossella
AU - Bernuzzi, Sebastiano
N1 - Publisher Copyright:
© 2024 American Physical Society.
PY - 2024/5/15
Y1 - 2024/5/15
N2 - We present an extensive study of the effects of neutrino transport in three-dimensional general relativistic radiation hydrodynamics (GRHD) simulations of binary neutron star (BNS) mergers using our moment-based, energy-integrated neutrino radiation transport (M1) scheme. We consider a total of eight BNS configurations, while varying equation of state models, mass ratios, and grid resolutions, for a total of 16 simulations. We find that M1 neutrino transport is crucial in modeling the local absorption of neutrinos and the deposition of lepton number throughout the medium. We provide an in-depth look at the effects of neutrinos on the fluid dynamics and luminosity during the late inspiral and postmerger phases, the properties of ejecta and outflow, and the postmerger nucleosynthesis. The simulations presented in this work comprise an extensive study of the combined effect of the equation of state and M1 neutrino transport in GRHD simulations of BNS mergers, and establish that the solution provided by our M1 scheme is robust across system properties.
AB - We present an extensive study of the effects of neutrino transport in three-dimensional general relativistic radiation hydrodynamics (GRHD) simulations of binary neutron star (BNS) mergers using our moment-based, energy-integrated neutrino radiation transport (M1) scheme. We consider a total of eight BNS configurations, while varying equation of state models, mass ratios, and grid resolutions, for a total of 16 simulations. We find that M1 neutrino transport is crucial in modeling the local absorption of neutrinos and the deposition of lepton number throughout the medium. We provide an in-depth look at the effects of neutrinos on the fluid dynamics and luminosity during the late inspiral and postmerger phases, the properties of ejecta and outflow, and the postmerger nucleosynthesis. The simulations presented in this work comprise an extensive study of the combined effect of the equation of state and M1 neutrino transport in GRHD simulations of BNS mergers, and establish that the solution provided by our M1 scheme is robust across system properties.
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U2 - 10.1103/PhysRevD.109.103027
DO - 10.1103/PhysRevD.109.103027
M3 - Article
AN - SCOPUS:85193443929
SN - 2470-0010
VL - 109
JO - Physical Review D
JF - Physical Review D
IS - 10
M1 - 103027
ER -