Numerical code for multi-component galaxies: from N-body to chemistry and magnetic fields

TL;DR

This paper introduces a comprehensive numerical simulation code for galactic evolution, integrating N-body dynamics, gas physics, magnetic fields, and chemical processes, validated through tests and applied to galactic disc dynamics.

Contribution

The paper presents a novel multi-component galactic simulation code that combines N-body, gas dynamics, magnetic fields, and chemistry, with parallelization for large-scale studies.

Findings

Code passes various validation tests with reasonable accuracy.

Successfully applied to study large-scale galactic disc dynamics.

Integrates multiple physical processes in a unified simulation framework.

Abstract

We present a numerical code for multi-component simulation of the galactic evolution. Our code includes the following parts: $N$-body is used to evolve dark matter, stellar dynamics and dust grains, gas dynamics is based on TVD-MUSCL scheme with the extra modules for thermal processes, star formation, magnetic fields, chemical kinetics and multi-species advection. We describe our code in brief, but we give more details for the magneto-gas dynamics. We present several tests for our code and show that our code have passed the tests with a reasonable accuracy. Our code is parallelized using the MPI library. We apply our code to study the large scale dynamics of galactic discs.