29 July 2024 to 2 August 2024
Erlangen Centre for Astroparticle Physics (ECAP), Friedrich-Alexander-Universität Erlangen-Nürnberg
Europe/Berlin timezone

Exploring the Influence of Cosmic Voids on the propagation of TeV Gamma Rays and the Puzzle of GRB 221009A

31 Jul 2024, 11:00
30m
Erlangen Centre for Astroparticle Physics (ECAP), Friedrich-Alexander-Universität Erlangen-Nürnberg

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

Erlangen Centre for Astroparticle Physics (ECAP) Friedrich-Alexander-Universität Erlangen-Nürnberg Nikolaus-Fiebiger-Str. 2 91058 Erlangen

Speaker

Hassan Abdalla (Universidad Complutense de Madrid)

Description

The recent detection of the gamma-ray burst GRB 221009A has garnered significant attention due to its unprecedented brightness and the first-ever detection of very-high energy (VHE, > 10 TeV) gamma rays from a GRB at the redshift of z=0.151. This redshift indicates a distance at which the gamma-ray flux at these energies would typically undergo severe attenuation due to gamma-gamma pair production with the extragalactic background light (EBL). In my talk, I will explore the possibility that cosmic voids along our line-of-sight to the source might significantly influence the detestability of such VHE gamma-ray photons.

Primary author

Hassan Abdalla (Universidad Complutense de Madrid)

Presentation materials