New constraints on the gamma-ray and high energy neutrino fluxes from the circumstellar interaction of SN 2023ixf

Understand

The recent supernova, SN 2023ixf, one of the closest observed type II SNe has revealed the presence of a dense circumstellar material (CSM).

• Interaction of the SN ejecta with this dense CSM might create high energy protons of PeV energies through shock acceleration.
• These accelerated protons then colliding with the CSM (inelastic $pp$ collision) can produce secondaries such as high energy gamma-rays and neutrinos.
• However, no gamma-rays and neutrinos have been detected by Fermi-LAT and IceCube from this event.