A semianalytical method for calculating the parameters of the electromagnetic halos around extragalactic gamma-ray sources View Full Text


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Article Info

DATE

2004-10

AUTHORS

S. R. Kel’ner, D. V. Khangulyan, F. A. Aharonian

ABSTRACT

The ultrahigh-energy (>20 TeV ) gamma rays emitted by active galactic nuclei can be absorbed in intergalactic space through the production of electron-positron pairs during their interaction with extragalactic background photon fields. The electrons and positrons produced by this interaction form an electromagnetic halo. We have studied the halo formation and calculated the halo radiation spectrum. The magnetic field in the halo formation region is assumed to be strong enough for the electron velocities to be isotropized. For such fields, the halo formation process can be described by the method of generations. We calculated the synchrotron and Compton backscattering radiation spectra for the total halo luminosity. We obtained the spatial distribution of the radiation for a point gamma-ray source. More... »

PAGES

663-668

Identifiers

URI

http://scigraph.springernature.com/pub.10.1134/1.1808052

DOI

http://dx.doi.org/10.1134/1.1808052

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1004886459


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