Multi-messenger emission from choked jets in collapsar

TL;DR

This paper uses relativistic magnetohydrodynamical simulations to study how choked jets in collapsing massive stars produce high-energy neutrinos and electromagnetic signals, focusing on blue and red supergiant progenitors.

Contribution

It provides a detailed analysis of jet choking conditions and particle acceleration efficiency in massive star collapses, expanding understanding of multi-messenger astrophysical phenomena.

Findings

Identifies parameter space where jets become choked in massive stars.

Quantifies particle acceleration rates at shocks in choked jets.

Highlights blue and red supergiants as key progenitors for choked jets.

Abstract

The death of massive stars produces central accreting compact objects and sometimes relativistic jets. Not all jets escape the stellar envelope: unsuccessful, or choked, jets dissipate their energy into a pressurized cocoon, which expands and may break out as a mildly relativistic outflow. We investigate the plasma physics of collapsing massive stars hosting choked jets through relativistic, non-resistive magnetohydrodynamical simulations. We delineate the parameter space for jet choking and quantify the acceleration rate and efficiency of charged particles at strong shocks, which are potential sources of high-energy neutrinos and electromagnetic transients. Our study focuses on blue and red supergiant progenitors, both promising candidates for jet choking.