Microphysical Plasma Relations from Special-relativistic Turbulence

Abstract The microphysical, kinetic properties of astrophysical plasmas near accreting compact objects are still poorly understood. For instance, in modern general-relativistic magnetohydrodynamic simulations, the relation between temperature electrons T e and protons p is prescribed terms simplified phenomenological models where electron related to proton ratio gas magnetic pressures, or ? parameter. We here present a very comprehensive campaign two-dimensional particle-in-cell simulations special-relativistic turbulence investigate systematically microphysical plasma transrelativistic regime. Using realistic mass protons, we analyze how index energy distributions ? , efficiency nonthermal particle production ? }:={T}_{e}/{T}_{p}$?> mathvariant="italic">? := T e / p vary over wide range values ? . each these quantities, provide fitting functions that describe their behavior relevant space parameters, thus connecting plasma, with macrophysical ones In this way, our results can find application scenarios, including accretion jet emission onto supermassive black holes, such as M87* Sgr A*.