High energy particles from young supernovae: gamma-ray and neutrino connections

Abstract

Young core-collapse supernovae (YSNe)are factories of high-energy neutrinos and gamma-rays as the shock accelerated protons efficiently interact with the protons in thedense circumstellar medium. We explore the detection prospects of secondary particles from YSNe of TypeIIn, II-P, IIb/II-L, and Ib/c.Type IIn YSNe are found to produce the largest flux of neutrinos and gamma-rays, followed by II-P YSNe. Fermi-LAT and the Cherenkov Telescope Array (IceCube-Gen2) have the potential to detect Type IIn YSNe up to 10 Mpc (4 Mpc), with the remaining YSNe Types being detectable closer to Earth. We also find that YSNe may dominate the diffuse neutrino background, especially between 10 TeV and 103 TeV, while they do not constitute a dominant component to the isotropic gamma-ray background observed by Fermi-LAT. At the same time, the IceCube high-energy starting events and Fermi-LAT data already allow us to exclude a large fraction of the model parameter space of YSNe otherwise inferred from multi-wavelength electromagnetic observations of these transients.