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T: Fachverband Teilchenphysik

T 17: Neutrino Astronomy I

T 17.5: Vortrag

Montag, 16. März 2026, 17:15–17:30, KS H C

Modeling Gamma-Ray Bursts Using CRISP — •Therese Paulsen, Leonel Morejón, and Karl-Heinz Kampert — Bergische Universität Wuppertal, Gaußstraße 20, 42119 Wuppertal, Germany

Astrophysical neutrinos are a clear identifier of photohadronic interactions in sources of Ultra-High-Energy Cosmic Rays (UHECRs). As the Pierre Auger Observatory has shown that UHECRs exhibit a composition heavier than protons at Earth, we expect that these heavy primaries undergo nuclear cascades due to photodisintegration in the dense source environments from which they originate.

In this talk, we will derive the neutrino spectra produced by these heavier primaries undergoing photohadronic interactions. This will be explored in the context of modeling the emission region of a gamma-ray burst. Photohadronic interactions will be modeled using the new framework for "Cosmic Ray Stochastic Interactions for Propagation" (CRISP), which employs an analytic approach to compute the underlying probabilistic description of UHECR interactions.

Keywords: Gamma-Ray Bursts; Neutrinos; UHECR; CRISP; Multi-Messenger