Jul 12 – 23, 2021
Europe/Berlin timezone

UHECR from high- and low-luminosity GRBs

Jul 13, 2021, 12:00 PM
1h 30m


Talk MM | Multi-Messenger Discussion


Annika Rudolph (Z_THAT (Theoretische Astroteilchenphysik))


We discuss the production of multiple messengers including UHECR, EM radiation and neutrinos in Gamma-Ray Bursts in models with multiple interaction regions.
We demonstrate that standard high-luminosity bursts can explain the UHECR spectrum as as measured by the Pierre Auger Observatory, and derive the required source injection composition for different engine realisations. We discuss how multi-messenger observations can be used to discriminate between models by explicitly calculating the expected source and cosmogenic neutrino fluxes as well as the photon light curves. In addition, a separate population of LL-GRBs may exist, for which we show that different nuclei can indeed reach UHECR energies. For this purpose, we self-consistently model the radiation fields in prototypes inspired by real GRBs. We connect the maximal energies attainable for cosmic-ray nuclei to a possible VHE and HE component in the SED.

Subcategory Theoretical Results

Primary authors

Anatoli Fedynitch (DESY) Annika Rudolph (Z_THAT (Theoretische Astroteilchenphysik)) Daniel Biehl (DESY Zeuthen) Denise Boncioli (Gran Sasso Science Institute: L'aquila, Abruzzo, IT) Iftach Sadeh (Z_CTAS (CTA IKC)) Jonas Heinze (Desy Zeuthen) Walter Winter (DESY) Zeljka Bosnjak (FER-University of Zagreb)

Presentation materials