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arXiv · 2604.27257

Multi-messenger emission from choked jets in collapsar

Zegarelli Angela·Pais Matteo·Peretti Enrico·Celli Silvia
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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.

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Zegarelli Angela, Pais Matteo, Peretti Enrico, Celli Silvia. 2026-04-29. Multi-messenger emission from choked jets in collapsar. https://arxiv.org/abs/2604.27257

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