Physics
Scientific paper
Mar 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aph....23..211f&link_type=abstract
Astroparticle Physics, Volume 23, Issue 2, p. 211-226.
Physics
20
Scientific paper
If ultra-high energy cosmic rays (UHECRs) are accelerated at astrophysical point sources, the identification of such sources can be achieved if there is some kind of radiation at observable wavelengths that may be associated with the acceleration and/or propagation processes. No radiation of this type has so far been detected or at least no such connection has been claimed. The process of photopion production during the propagation of UHECRs from the sources to the Earth results in the generation of charged and neutral pions. The neutral (charged) pions in turn decay to gamma quanta and electrons that initiate an electromagnetic cascade in the universal photon background. We calculate the flux of this gamma radiation in the GeV TeV energy range and find that for source luminosities compatible with those expected from small scale anisotropies in the directions of arrival of UHECRs, the fluxes can be detectable by future Cerenkov gamma ray telescopes, such as VERITAS and HESS, provided the intergalactic magnetic field is not larger than ˜10-10 Gauss and for source distances comparable with the loss length for photopion production.
Blasi Pasquale
de Marco Daniel
Ferrigno Carlo
No associations
LandOfFree
High energy gamma ray counterparts of astrophysical sources of ultra-high energy cosmic rays 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 High energy gamma ray counterparts of astrophysical sources of ultra-high energy cosmic rays, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High energy gamma ray counterparts of astrophysical sources of ultra-high energy cosmic rays will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1213846