Evolving Supernova Remnants in Multiphase Interstellar Media

TL;DR

This study uses 3D magnetohydrodynamic simulations to explore how supernova remnants evolve within turbulent, multiphase interstellar media, revealing magnetic amplification and observational variability.

Contribution

It provides new insights into the magnetic energy amplification and observational appearance of supernova remnants in realistic turbulent interstellar environments.

Findings

Magnetic energy amplifies by up to 34% in SNRs.

Synthetic maps show different geometries from various lines of sight.

The environment influences the remnant's evolution and appearance.

Abstract

We performed three-dimensional magnetohydrodynamic simulations to study the evolution of a supernova remnant (SNR) in a turbulent neutral atomic interstellar medium. The media used as background shares characteristics with the Solar neighbourhood and the SNR has mass and energy similar to those of a Type Ia object. Our initial conditions consist of dense clouds in a diluted medium, with the main difference between simulations being the average magnitude of the magnetic field. We measured amplifications of the magnetic energy of up to 34$\%$ and we generated synthetic maps that illustrate how the same object can show different apparent geometries and physical properties when observed through different lines of sight.