2–6 Sept 2024
Università di Milano "La Statale"
Europe/Rome timezone

Expected gamma-ray emission from Stellar Clusters acting as Galactic PeVatrons

GAL
2 Sept 2024, 09:10
1m
Poster Poster hang

Speaker

Alison Mitchell (Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg)

Description

Galactic cosmic rays may be accelerated up to PeV energies due to collective stellar winds surrounding stellar clusters. Further particle acceleration may occur due to supernova remnants within the wind-blown bubble. We apply a model of particle acceleration accounting for the stellar cluster wind termination shock and supernova remnant shocks to young and massive stellar clusters catalogued in Gaia DR2. The resulting gamma-ray and neutrino emission and size of the wind-blown bubble are predicted, from which we identify the most suitable candidates for future observations of stellar clusters. Detection prospects for future experimental facilities, taking the flux and angular size into account, are evaluated, along with the flux range allowed due to model assumptions and uncertainties.

Primary author

Alison Mitchell (Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg)

Co-authors

Giovanni Morlino (Istituto Nazionale di Astrofisica (INAF)) Silvia Celli (Sapienza University of Rome & INFN) Dr Stefano Menchiari (INAF - Osservatorio Astrofisico di Arcetri)

Presentation materials