Transient High-energy Gamma-rays and Neutrinos from Nearby Type II Supernovae

Abstract

The dense wind environment (or circumstellar medium) may be ubiquitous for the regular Type II supernovae (SNe) before the explosion, the interaction of which with the SN ejecta could result in a wind breakout event. The shock generated by the interaction of the SN ejecta and the wind can accelerate the protons and subsequently the high-energy gamma-rays and neutrinos could arise from the inelastic pp collisions. In this work, we present the detailed calculations of gamma-ray and neutrino production for the regular Type II SNe. The calculation is executed by applying time-dependent evolutions of dynamic and proton distribution so that the emission could be shown at different times. Our results show, for the SN 2013fs-like wind environment, the multi-GeV and ~ few-100 TeV gamma-rays are detectable with a time window of several days at <~ 2-3 Mpc by Fermi/LAT and CTA during the ejecta-wind interaction, respectively, and can be detected at a further distance if the wind environment is denser. Besides, we found the contribution of the wind breakouts of regular Type II SNe to diffuse neutrino flux is subdominant by assuming all Type II SNe are SN 2013fs-like, whereas for a denser wind environment the contribution could be conspicuous above 300TeV.

11 pages, 4 figures; accepted for publication in ApJ

References in corpus (5)

• The spectrum of isotropic diffuse gamma-ray emission between 100 MeV and 820 GeV
• Confined Dense Circumstellar Material Surrounding a Regular Type II Supernova: The Unique Flash-Spectroscopy Event of SN 2013fs
• Parametrization of gamma-ray production cross-sections for pp interactions in a broad proton energy range from the kinematic threshold to PeV energies
• Unifying Type II Supernova Light Curves with Dense Circumstellar Material
• Point-source and diffuse high-energy neutrino emission from Type IIn supernovae

Cited by in corpus (5)

• Time-dependent high-energy gamma-ray signal from accelerated particles in core-collapse supernovae: the case of SN 1993J
• The first days of type II-P core collapse supernovae in the gamma-ray range
• High-energy Neutrino Productions from AGN Disk Transients Impacted by Circum-disk Medium
• Origin of Spectral Hardening of Secondary Cosmic-Ray Nuclei
• High-energy Neutrinos from Stellar Explosions in Active Galactic Nuclei Accretion Disks