A fluid-particle hybrid framework for the PLUTO code: applications to non-thermal emission in jets.

10th International Conference on Numerical Modeling of Space Plasma Flows: ASTRONUM-2015

Vaidya, B.^1 ; Mignone, A.^1 ; Bodo, G.^2 ; Massaglia, S.^1

Dipartimento di Fisica, University di Torino, via Pietro Giuria 1, Torino

I-10125, Italy^1

INAF, Osservatorio Astronomico di Torino, Strada Osservatorio 20, Pino Torinese

I-10025, Italy^2

关键词: Astrophysical plasma;    Diffusive shock accelerations;    Kinetic transport equations;    Lagrangian particles;    Nonthermal emission;    Radiation properties;    Spectral energy distribution;    Synchrotron emission;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/719/1/012023/pdf
DOI  :  10.1088/1742-6596/719/1/012023

来源: IOP

【 摘 要 】

We present an implementation of a fully parallel hybrid framework for the evolution of Lagrangian particles coupled to a MHD fluid for the PLUTO code. For the applications of interest, particles represent ensembles of electrons whose spectral energy distribution is governed by a kinetic transport equation that takes into account different physical processes such as diffusive shock acceleration, synchrotron emission and adiabatic expansion. An application to model non-thermal emission from extragalactic jets shows the effectiveness and strength of the approach in describing not only the dynamics but also the radiation properties of jets and, in general, of high-energy astrophysical plasma environments.