SMuK 2023 – scientific programme

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T: Fachverband Teilchenphysik

T 41: Cosmic Ray II

T 41.5: Talk

Tuesday, March 21, 2023, 18:00–18:15, POT/0013

Studying the properties of bursting UHECR sources in a multi-messenger approach* — •Leonel Morejon — Bergische Universität Wuppertal, Gaußstr. 20, 42119 Wuppertal

The study of Ultra-High Energy Cosmic Rays (UHECRs) via the multi-messenger approach is reaching a level that requires going beyond steady state sources. The exploration of bursting sources and the implications for multi-messenger detection is the goal of the French-German research project MICRO. Meeting this challenge requires improvements of the existing tools and defining new methods to accelerate the computations related to the propagation of UHECRs in extragalactic space and within the sources. The progress of MICRO in these aspects will be presented by discussing: a) a module to compute hadronic interactions within CRPropa, b) tools to fit the UHECR spectrum and composition with precomputed propagation tensors and corresponding propagation matrices, and c) the estimation of the impact that uncertainties of the latest models of Extragalactic Background Light (EBL) have on the precision in UHECR propagation.

* Supported by the DFG through project number 445990517.