Computer Science
Scientific paper
Aug 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992aipc..264..304s&link_type=abstract
In: Particle acceleration in cosmic plasmas; Proceedings of the Workshop, Bartol Research Inst., Newark, DE, Dec. 4-6, 1991 (A93
Computer Science
3
Active Galactic Nuclei, Continuum Modeling, Energetic Particles, Galactic Radiation, Shock Wave Interaction, Proton Energy, Synchrotron Radiation
Scientific paper
We consider the case of shock acceleration of protons taking place in the radiation field of an active galactic nucleus (AGN). We use an heuristic approach to devise a simple model which reproduces the overall features of shock acceleration and can be used to simplify numerical calculations. Two possible forms of the radiation field based on observations of the infrared to hard X-ray spectrum are considered. In the first of these, the bulk of the infrared emission is assumed to come from reprocessing of UV photons by dust far outside the assumed acceleration region, while in the second the observed infrared emission is assumed to be mainly of synchrotron origin. In both cases, we find that a significant fraction of the total energy used to accelerate a proton goes into particle production in interactions with photons occurring during the acceleration process. We obtain the energy spectra of neutrons, neutrinos and electromagnetic radiation produced both during acceleration, and subsequently as a result of interactions of the accelerated protons after leaving the accelerator. We compare the spectra of the particles produced for the two possible forms of the radiation field and give the expected neutrino flux from 3C273 and 3C279.
Protheroe Raymond J.
Szabo A. P.
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