The optical depth including Lorentz invariance violation energy threshold shifts

Humberto Martínez-Huerta, Rodrigo G. Lang, Vitor de Souza

Research output: Contribution to conferencePaperpeer-review

1 Citation (Scopus)

Abstract

Lorentz invariance violation (LIV) introduced as a generic modification to particle dispersion relations can change the photon energy threshold of pair-production, which modifies the expected gamma-ray flux from astrophysical sources. In this work, we review this phenomenon and explore its consequences through the derived effects in the optical depth. Then, by looking for subluminal LIV signatures in TeV gamma-ray spectra, we present stringent limits to the LIV energy scale at leading order n=1 and 2. And finally, we present the predicted flux of GZK-photons including LIV, in the astrophysical scenario which best describes UHECR data.

Original languageEnglish
Publication statusPublished - 2018
Externally publishedYes
Event2018 International Conference on Black Holes as Cosmic Batteries: UHECRs and Multimessenger Astronomy, BHCB 2018 - Foz do Iguacu, Brazil
Duration: 12 Sep 201815 Sep 2018

Conference

Conference2018 International Conference on Black Holes as Cosmic Batteries: UHECRs and Multimessenger Astronomy, BHCB 2018
Country/TerritoryBrazil
CityFoz do Iguacu
Period12/9/1815/9/18

Bibliographical note

Funding Information:
The authors acknowledge FAPESP support numbers 2015/15897-1, 2016/24943-0 and 2017/03680-3. The authors also acknowledge the National Laboratory for Scientific Computing (LNCC/MCTI, Brazil) for providing HPC resources of the SDumont supercomputer, which have contributed to the research results reported within this paper (http://sdumont.lncc.br).

Publisher Copyright:
© Copyright owned by the author(s) under the terms of the Creative Commons.

All Science Journal Classification (ASJC) codes

  • General

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