Séminaires

Supernova remnants with the Cherenkov Telescope Array

par Pierre Cristofari (GSSI)

Europe/Paris
Description

The idea that supernova remnants are the sources of Galactic cosmic rays is so famous that is has been elevated to the rank of a paradigm. However, several observational results remain problematic: for example, the fact that all supernova remnants exhibit, in the gamma—ray range, spectra that are steeper than $E^{-2}$, predicted by the standard theory, and the fact that all detected supernova remnants  seem to not accelerate particles up to $10^{15}$ eV, which is required in the usual description.
We discuss the opportunities brought by the next generation instruments, such as the  Cherenkov Telescope Array (CTA) to resolve these issues, and understand the actual contribution of supernova remnants in the production of Galactic cosmic rays.