UHECR from high- and low-luminosity Gamma-Ray Bursts

0566193 - FZÚ 2023 RIV IT eng C - Conference Paper (international conference)
Rudolph, A. … Total 9 authors
UHECR from high- and low-luminosity Gamma-Ray Bursts.
Proceedings of Science. Vol. 395. Trieste: Sissa Medilab srl, 2022, č. článku 1000. ISSN 1824-8039.
[International Cosmic Ray Conference /37./. Berlin (DE), 12.07.2021-23.07.2021]
Research Infrastructure: AUGER-CZ II - 90102
Keywords : Ultra-High-Energy Cosmic Rays * Gamma-Ray Bursts
OECD category: Particles and field physics
https://pos.sissa.it/395/1000

For a long time Gamma-Ray Bursts (GRBs) have been discussed as potential origin of Ultra-High-Energy Cosmic Rays (UHECRs). This paradigm is challenged by the lack of High-Energy (HE) neutrinos detected by IceCube that could be associated with known GRBs. In this work, we study two scenarios that could reconcile GRBs as UHECR sources: First we fit the UHECR spectrum and xmax as observed by Auger with conventional long-duration GRBs in a multi-zone internal shock model. Here, we systematically scan over different engine realisations that may be distinguished by their light curves. We show that a good fit is possible for a broad range of parameters if sigmaxmax is not included and that the corresponding neutrino fluxes are in reach of future instruments such as IceCube Gen2.
Permanent Link: https://hdl.handle.net/11104/0337624