Physics
Scientific paper
Jul 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003icrc....5.2671d&link_type=abstract
Proceedings of the 28th International Cosmic Ray Conference. July 31-August 7, 2003. Trukuba, Japan. Under the auspices of the I
Physics
Scientific paper
M87 and 3C273 are famous AGN with powerful jets. High energy gammaray emission from these jets has been calculated [10,11] with hadronic models in which accelerated protons interact with internal radiation (synchrotron) and/or external radiation fields. Leptonic models have also been used to model the gamma-ray emission of both objects[1]. GeV to TeV gamma-rays produced in the jets may or may not be absorb ed by γ -γ pair production in the radiation fields of the accretion disk and torus. We investigate this problem for M87 and 3C 273. In the case of M87, a mis-aligned BL Lac object, there appears to be a deficiency in dust at parsec scales and we discuss the implications of the possible existence of a non-standard torus in M87 for the GeV to TeV gamma-ray emission from the jet. In the case of the quasar 3C 273, the disk emission is more important, we investigate to what extent the size and location of the gamma-ray emitting blob exposed to the anisotropic radiation field of the accretion disk affects the angular dependence of the gamma-ray absorption.
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