Alexandre Marcowith, Post-breakout supernova shocks as Cosmic-ray and gamma-ray sources

Friday 5 Nov 2021, 11:00 → 12:20 Europe/Berlin

Zoom

Abstract: The origin of Cosmic Rays (CRs) with kinetic energies below 100 PeV is still widely debated. To reach PeV energies for protons magnetic field amplification seems necessary whatever the source. In this talk, I will discuss the case of fast, strong shocks pervading the high atmosphere and the dense wind of massive progenitors like red supergiants or Wolf-Rayet stars. After the shock breakout matter controls the shock physics and it is expected that particle acceleration together with magnetic field amplification are occurring in a symbiotic way. I will estimate the maximum particle energy as well as the gamma-ray emission produced within the first days to months after the explosion. I will finally address the perspectives to detect such objects by the Cerenkov Telescope Array.