High-energy neutrinos from choked-jet supernovae: Searches and implications
Abstract
The origin of the high-energy astrophysical neutrinos discovered by IceCube remains largely unknown. Multimessenger studies have indicated that the majority of these neutrinos come from gamma-ray-dark sources. Choked-jet supernovae (cjSNe), which are supernovae powered by relativistic jets stalled in stellar materials, may lead to neutrino emission via photohadronic interactions while the coproduced gamma rays are absorbed. In this paper, we perform an unbinned maximum-likelihood analysis to search for correlations between IceCube's ten-year muon-track events and our SN Ib/c sample, collected from publicly available catalogs. In addition to the conventional power-law models, we also consider the impacts of more realistic neutrino emission models for the first time, and we study the effects of the jet beaming factor in the analyses. Our results show no significant correlation. Even so, the conservative upper limits we set to the contribution of cjSNe to the diffuse astrophysical neutrino flux still allow SNe Ib/c to be the dominant source of astrophysical neutrinos observed by IceCube. We discuss implications to the cjSNe scenario from our results and the power of future neutrino and supernova observations.
Keywords
Cite
@article{arxiv.2210.03088,
title = {High-energy neutrinos from choked-jet supernovae: Searches and implications},
author = {Po-Wen Chang and Bei Zhou and Kohta Murase and Marc Kamionkowski},
journal= {arXiv preprint arXiv:2210.03088},
year = {2024}
}
Comments
12 pages, 7 figures. Match the published version: Following IceCube's stacking analysis approach, we set new limits w.r.t. TS_obs (see Sec. IV and Fig. 4). As a result, our constraints have improved by a factor of ~2 compared to our previous results (see new results in Secs. V-C, V-D and Figs. 2, 6, and 7)