Magneto hydrodynamic simulations of the supernova remnant G1.9+0.3

TL;DR

This paper uses 3D magneto hydrodynamical simulations to explore the formation of the unique radio and X-ray features of the supernova remnant G1.9+0.3, providing insights into its morphology through environmental modeling.

Contribution

It presents the first detailed 3D MHD simulations explaining the discrete features of G1.9+0.3 based on environmental density variations.

Findings

Simulated features match observed morphology under density gradient conditions.

Clumpy environment simulations also reproduce the discrete features.

Provides a plausible explanation for the remnant's morphological differences.

Abstract

The youngest Galactic supernova remnant G1.9+0.3 shows a discrete feature between its radio and X-ray morphologies. The observed radio morphology features a single maximum in the north, while the X-ray observation shows two opposite 'ears' on the east and west sides. Using 3D magneto hydrodynamical simulations, we investigate the formation of the discrete feature of the remnant. We have tested different parameters for better simulation and reproduced similar discrete features under an environment with density gradient and an environment with clump, which provides a possible explanation of the observation.