Simulation of astrophysical jet using the special relativistic hydrodynamics code

TL;DR

This paper introduces a multidimensional special relativistic hydrodynamics code capable of accurately simulating astrophysical jets and relativistic flows, validated through standard shock tests and applied to jet dynamics.

Contribution

The paper presents a new high-resolution shock capturing hydrodynamics code for relativistic flows, with validation and application to astrophysical jet simulations.

Findings

The code accurately captures shock discontinuities.

Simulations of relativistic jets show detailed structure and propagation.

Jet dynamics depend on ambient parameters and initial conditions.

Abstract

This paper describes a multidimensional hydrodynamic code which can be used for the studies of relativistic astrophysical flows. The code solves the special relativistic hydrodynamic equations as a hyperbolic system of conservation laws based on High Resolution Shock Capturing (HRSC) Scheme. Two standard tests, one of which is the relativistic blast wave tested in our previous paper\cite{DO1}, and the other is the collision of two ultrarelativistic blast waves tested in here, are presented to demonstrate that the code captures correctly and gives solution in the discontinuities, accurately. The relativistic astrophysical jet is modeled for the ultrarelativistic flow case. The dynamics of jet flowing is then determined by the ambient parameters such as densities, and velocities of the jets and the momentum impulse applied to the computational surface. We obtain solutions for the jet structure, propagation of jet during the time evolution, and variation in the Mach number on the computational domain at a fixed time.