Neutrinos from Choked Jets Accompanied by Type-II Supernovae

TL;DR

This paper investigates neutrino production in choked jets within collapsing massive stars, proposing models that could explain IceCube observations and predicting potential supernova-neutrino associations.

Contribution

It introduces a two-component model for neutrino spectra from choked jets in supergiant stars and predicts observable supernova-neutrino correlations.

Findings

Softened neutrino spectrum due to photo-meson cooling challenges single-component explanations.

A two-component model can successfully fit the observed IceCube neutrino spectrum.

Potential for detecting neutrino bursts from jet-driven supernovae.

Abstract

The origin of the IceCube neutrinos is still an open question. Upper limits from diffuse gamma-ray observations suggest that the neutrino sources are either distant or hidden from gamma-ray observations. It is possible that the neutrinos are produced in jets that are formed in the core-collapsing massive stars and fail to break out, the so-called choked jets. We study neutrinos from the jets choked in the hydrogen envelopes of red supergiant stars. Fast photo-meson cooling softens the neutrino spectrum, making it difficult to explain the PeV neutrinos observed by IceCube in a one-component scenario, but a two-component model can explain the spectrum. Furthermore, we predict that a newly born jet-driven type-II supernova may be observed to be associated with a neutrino burst detected by IceCube.