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Cosmic rays and their radiative processes in numerical cosmology

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Author(s): Jones , Tom W. | Kang , Hyesung | Miniati , Francesco | Ryu , Dongsu

Journal: Revista Mexicana de Astronomía y Astrofísica : Universidad Nacional Autónoma de México. Instituto de Astronomía
ISSN 0185-1101

Issue: 9;
Start page: 305;
Date: 2000;
Original page

Keywords: COSMIC RAYS | COSMOLOGY: LARGE-SCALE STRUCTURE OF THE UNIVERSE | GALAXIES: CLUSTERS: GENERAL | METHODS: NUMERICAL

ABSTRACT
A cosmological hydrodynamic code is described, which includes a routine to compute cosmic ray acceleration and transport in a simpli ed way. The routine was designed to follow explicitly di usive acceleration at shocks, and second-order Fermi acceleration and adiabatic loss in smooth ows. Synchrotron cooling of the electron population can also be followed. The updated code is intended to be used to study the properties of nonthermal synchrotron emission and inverse Compton scattering from electron cosmic rays in clusters of galaxies, in addition to the properties of thermal bremsstrahlung emission from hot gas. The results of a test simulation using a grid of 1283 cells are presented, where cosmic rays and magnetic eld have been treated passively and synchrotron cooling of cosmic ray electrons has not been included.

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