Cosmic ray studies with SWGO

Discussion timeslot (ZOOM-Meeting): 15. July 2021 - 18:00
ZOOM-Meeting URL: https://desy.zoom.us/j/92210078166
ZOOM-Meeting ID: 92210078166
ZOOM-Meeting Passcode: ICRC2021
Corresponding Session: https://icrc2021-venue.desy.de/channel/07-Where-to-go-in-UHECR-observations-CRI/123
Live-Stream URL: https://icrc2021-venue.desy.de/livestream/Discussion-03/4

Abstract:
'A number of cosmic-ray observatories have measured a change in both phase and amplitude of the dipole component in the distribution of cosmic-ray arrival directions at ~ 100 TeV primary energy. We focus on probing the cosmic-ray dipole and multipole evolution in the energy region of ~ 1 TeV to beyond a PeV with a future large-area gamma-ray observatory, such as the Southern Wide-field Gamma-ray Observatory (SWGO). The ability to discriminate between different mass groups is essential to understand the origin of this evolution. Through a consideration of the energy and mass resolution for cosmic-ray detection by such an observatory, we estimate its separation power for decomposing the full-particle anisotropy into mass groups. In particular, we explore the feasibility of probing the dipole evolution with rigidity with SWGO. In this way, we demonstrate the great potential that this instrument offers for providing a deeper understanding of the origin of the cosmic-ray anisotropy.'

Authors: Andrew Taylor | Gwenael Giacinti | Paolo Desiati | Andrea Chiavassa | Guiseppe Disciascio | Juan Carlos Arteaga Velazquez | Juan Carlos Diaz Velez
Collaboration: SWGO

Indico-ID: 304
Proceeding URL: https://pos.sissa.it/395/198