Relativistic MHD simulations of merging and collapsing stars and effects on GRB transient

TL;DR

This paper uses advanced relativistic MHD simulations to study how merging and collapsing stars produce gamma-ray bursts and kilonovae, exploring their observable signatures and implications for multimessenger astrophysics.

Contribution

It introduces new relativistic MHD simulation results that analyze the effects of stellar and post-merger environments on GRB emissions.

Findings

Simulations reveal environmental impacts on GRB prompt emission.

Results suggest observable signatures for multimessenger detection.

Insights into the connection between mergers, collapses, and high-energy transients.

Abstract

Compact binary mergers and the collapse of massive stars can produce intense transients observable across high-energy wavelengths. Events such as gamma-ray bursts and kilonova emissions are often accompanied by gravitational wave detections, making them crucial sources for multimessenger astrophysics. To explore these phenomena theoretically, state-of-the-art approaches of General Relativistic magnetohydrodynamic simulations are used. We present recent findings from our simulations, and discuss observational consequences of the stellar/post-merger environment on the gamma ray burst prompt emission properties.