Untangling the Complexity in the Galactic Centre: a way to understand the origin of the gamma-ray emission from the inner Galaxy

Discussion timeslot (ZOOM-Meeting): 16. July 2021 - 18:00
ZOOM-Meeting URL: https://icrc2021.desy.de/pf_access_abstracts
Corresponding Session: https://icrc2021-venue.desy.de/channel/Presenter-Forum-1-Evening-All-Categories/48
Abstract:
'The origin of the high-energy gamma-ray emission from the Milky Way centre is still unclear and debated because of the impact of systematics afflicting the measurements from current experiments. Several theories and phenomenological models attempt to explain the intricate panorama. The presence of a PeVatron in the Central Molecular Zone or in its vicinity, the contribution of the hard component of the diffuse gamma-ray emission, and dark matter annihilation scenario are among the most promising mechanisms to describe the observed excess. The development of increasingly precise models able to reproduce the measured gamma-ray emission is the challenge for the scientific community in view of the next generation telescopes.

A detailed treatment of phenomenological models for the dubbed Cosmic Rays Sea (CR-sea) characterised by different configurations is scrutinised in comparison with the observed spectra in the inner Galaxy using DRAGON and GAMMASKY codes.'

Authors: Sofia Ventura
Indico-ID: 1031
Proceeding URL: https://pos.sissa.it/395/901