General-relativistic radiation transport scheme in $\texttt{Gmunu}$ I: Implementation of two-moment based multi-frequency radiative transfer and code tests

An Extension of the Athena++ Code Framework for Radiation-magnetohydrodynamics in General Relativity Using a Finite-solid-angle Discretization

“…Within the core-collapse community, it is common for relativistic dynamics, strong gravity, and neutrino transport to be combined in an M1 method that is simplified by leveraging the approximately spherical nature of the system or the expected approximate axisymmetry of the radiation field at every point about the radial direction (Liebendörfer et al 2004;O'Connor 2015). More multidimensional relativistic M1 schemes have been presented in Farris et al (2008), Shibata et al (2011), Zanotti et al (2011), Roedig et al (2012), Sądowski et al (2013), McKinney et al (2014), Fragile et al (2014), Foucart et al (2015), Kuroda et al (2016), Takahashi et al (2016), Rahman et al (2019), Weih et al (2020), Anninos & Fragile (2020), Radice et al (2022), and Cheong et al (2023).…”