Interacting supernovae as high-energy multimessenger transients
Abstract
Multiwavelength observations have revealed that dense, confined circumstellar material (CCSM) commonly exists in the vicinity of supernova (SN) progenitors, suggesting enhanced mass losses years to centuries before their core collapse. Interacting SNe, which are powered or aided by interaction with the CCSM, are considered to be promising high-energy multimessenger transient sources. We present detailed results of broadband electromagnetic emission, following the time-dependent model proposed in the previous work on high-energy SN neutrinos [K. Murase, New prospects for detecting high-energy neutrinos from nearby supernovae, Phys. Rev. D 97, 081301(R) (2018)]. We investigate electromagnetic cascades in the presence of Coulomb losses, including inverse-Compton and synchrotron components that significantly contribute to MeV and high-frequency radio bands, respectively. We also discuss the application to SN 2023ixf.
Keywords
Cite
@article{arxiv.2312.17239,
title = {Interacting supernovae as high-energy multimessenger transients},
author = {Kohta Murase},
journal= {arXiv preprint arXiv:2312.17239},
year = {2024}
}
Comments
20 pages, 10 figures, 1 table, version published in PRD, multimessenger spectral templates available on Github at https://github.com/pegasuskmurase/ModelTemplates/tree/main/SNHEMM