Simulations of Line-of-sight UHECR-induced γ-rays from Blazars using CRPropa

Jon Dumm, Karlen Shahinyan, Lucy F Fortson, Andrew Sargent

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Recent analyses of very high energy (VHE; >100 GeV) blazar spectra have shown evidence for an excess of γ-rays when attenuation by extragalactic background light (EBL) is expected to be high. A possible explanation for this anomaly is secondary γ-rays from ultra-high-energy cosmic rays (UHECRs) interacting with background photons. If the intergalactic magnetic field strength is sufficiently small, these UHECRs could travel straight enough for long enough that the secondary VHE γ-rays would appear point-like for existing imaging atmospheric Cherenkov telescopes. We will show results from a study using the publicly available UHECR propagation code CRPropa to investigate the cosmic-ray power and spectrum required to account for the anomaly as well as the impact of a range of EBL models.

Original languageEnglish (US)
Title of host publicationProceedings of the 33rd International Cosmic Rays Conference, ICRC 2013
PublisherSociedade Brasileira de Fisica
Volume2013-October
ISBN (Electronic)9788589064293
StatePublished - Jan 1 2013
Event33rd International Cosmic Rays Conference, ICRC 2013 - Rio de Janeiro, Brazil
Duration: Jul 2 2013Jul 9 2013

Other

Other33rd International Cosmic Rays Conference, ICRC 2013
CountryBrazil
CityRio de Janeiro
Period7/2/137/9/13

Fingerprint

blazars
line of sight
cosmic rays
rays
simulation
anomalies
energy
travel
field strength
attenuation
telescopes
propagation
photons
magnetic fields

Keywords

  • Blazars
  • Gamma rays
  • Icrc2013
  • UHECRs

Cite this

Dumm, J., Shahinyan, K., Fortson, L. F., & Sargent, A. (2013). Simulations of Line-of-sight UHECR-induced γ-rays from Blazars using CRPropa. In Proceedings of the 33rd International Cosmic Rays Conference, ICRC 2013 (Vol. 2013-October). Sociedade Brasileira de Fisica.

Simulations of Line-of-sight UHECR-induced γ-rays from Blazars using CRPropa. / Dumm, Jon; Shahinyan, Karlen; Fortson, Lucy F; Sargent, Andrew.

Proceedings of the 33rd International Cosmic Rays Conference, ICRC 2013. Vol. 2013-October Sociedade Brasileira de Fisica, 2013.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Dumm, J, Shahinyan, K, Fortson, LF & Sargent, A 2013, Simulations of Line-of-sight UHECR-induced γ-rays from Blazars using CRPropa. in Proceedings of the 33rd International Cosmic Rays Conference, ICRC 2013. vol. 2013-October, Sociedade Brasileira de Fisica, 33rd International Cosmic Rays Conference, ICRC 2013, Rio de Janeiro, Brazil, 7/2/13.
Dumm J, Shahinyan K, Fortson LF, Sargent A. Simulations of Line-of-sight UHECR-induced γ-rays from Blazars using CRPropa. In Proceedings of the 33rd International Cosmic Rays Conference, ICRC 2013. Vol. 2013-October. Sociedade Brasileira de Fisica. 2013
Dumm, Jon ; Shahinyan, Karlen ; Fortson, Lucy F ; Sargent, Andrew. / Simulations of Line-of-sight UHECR-induced γ-rays from Blazars using CRPropa. Proceedings of the 33rd International Cosmic Rays Conference, ICRC 2013. Vol. 2013-October Sociedade Brasileira de Fisica, 2013.
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