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RESEARCH PRODUCT
Spritz: General relativistic magnetohydrodynamics with neutrinos
Edoardo GiangrandiLorenzo SalaRiccardo CiolfiJay Vijay KalinaniFederico CipollettaBeatrice GiudiciBruno Giacomazzosubject
AstrofísicaParticle physicsPhysics and Astronomy (miscellaneous)Astrophysics::High Energy Astrophysical PhenomenaFOS: Physical sciencesBinary numberNeutron starGeneral Relativity and Quantum Cosmology (gr-qc)Magnetohydrodynamic01 natural sciencesGeneral Relativity and Quantum CosmologyNumerical relativity0103 physical sciences010306 general physicsHigh Energy Astrophysical Phenomena (astro-ph.HE)Physics010308 nuclear & particles physicsNumerical analysisOrder (ring theory)MagnetohidrodinàmicaMagnetic fieldNeutron starNumerical relativityRelativitat general (Física)MagnetohydrodynamicsNeutrinoAstrophysics - High Energy Astrophysical Phenomenadescription
We here present a new version of the publicly available general relativistic magnetohydrodynamic (GRMHD) code $\texttt{Spritz}$, which now includes an approximate neutrino leakage scheme able to handle neutrino cooling and heating. The leakage scheme is based on the publicly available $\texttt{ZelmaniLeak}$ code, with a few modifications in order to properly work with $\texttt{Spritz}$. We discuss the involved equations, physical assumptions, and implemented numerical methods, along with a large battery of general relativistic tests performed with and without magnetic fields. Our tests demonstrate the correct implementation of the neutrino leakage scheme, paving the way for further improvements of our neutrino treatment and the first application to magnetized binary neutron star mergers. We also discuss the implementation in the $\texttt{Spritz}$ code of high-order methods for a more accurate evolution of hydrodynamical quantities.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2020-12-18 |