May 29, 2023 to June 2, 2023
Santander (Spain)
Europe/Madrid timezone

Gamma ray signals from cosmic ray scattering on axionlike particles

May 30, 2023, 5:40 PM
20m
Astrophysics Astrophysics

Speaker

Natalia Tapia (University of Utah)

Description

Dark matter (DM) may be comprised of axionlike particles (ALPs) with couplings to photons and the standard model fermions. We study photon signals arising from cosmic ray (CR) electron scattering on background ALPs. For a range of masses we find that these bounds can place competitive new constraints on the ALP-electron coupling. In addition to current Fermi constraints, we also consider future e-Astrogram bounds which will have greater sensitivity to ALP-CR induced gamma-rays.

Author

Natalia Tapia (University of Utah)

Co-authors

Mr Alejandro Rodriguez (Virginia Tech. and Penn State U.) Prof. Bhaskar Dutta (Texas A-M) Prof. Ian Shoemaker (Virginia Tech) Prof. James Dent (Sam Houston State U.) Prof. Jayden Newstead (Melbourne U.) Dr Zahra Tabrizi (Virginia Tech)

Presentation materials