On weak redshift dependence of gamma-ray spectra of distant blazars

Details On weak redshift dependence of gamma-ray spectra of distant blazars On weak redshift dependence of gamma-ray spectra of distant blazars

2011-11-03

arxiv.org/abs/1111.0815v2

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

10 pages, 2 figures

Scientific paper

Line-of-sight interactions of cosmic rays provide a natural explanation of the hard gamma-ray spectra of distant blazars, which are believed to be capable of producing both gamma rays and cosmic rays. For sources with redshifts z> 0.1, secondary gamma rays produced in cosmic-ray interactions with background photons close to an observer can dominate over primary gamma-rays originating at the source. The transition from one component to another is accompanied by a change in the spectral index depending on the source redshift. We present theoretical predictions and show that they agree with the data from Fermi Large Area Telescope. This agreement, combined with the spectral data from Atmospheric Cherenkov Telescopes, provides evidence of cosmic ray acceleration by Active Galactic Nuclei and opens new opportunities for studying photon backgrounds and intergalactic magnetic fields.

Affiliated with

Also associated with

No associations

Rating

On weak redshift dependence of gamma-ray spectra of distant blazars does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with On weak redshift dependence of gamma-ray spectra of distant blazars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On weak redshift dependence of gamma-ray spectra of distant blazars will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-701840