ADP-AT-96-4 Gamma rays and neutrinos from AGN jets
نویسنده
چکیده
High energy gamma-ray emission has been observed above 100 MeV from at least 40 active galactic nuclei (AGN) by the EGRET instrument on the Compton Gamma Ray Observatory (CGRO), and above 300 GeV gamma rays have been detected by the Whipple observatory from two AGN. The sources detected so far are \blazars" indicating a jet origin for the gamma rays. They are seen to be variable on time scales of days, and using this constraint I construct a model of gamma ray emission in blazars in which protons are accelerated in the jet and interact with radiation from the accretion disk by pion photoproduction. The emerging gamma rays result from a pair synchrotron cascade and can reproduce some of the features of the observed spectra and time variability. Using the luminosity function of gamma-ray-loud AGN, I estimate the diiuse intensity of high energy gamma rays and neutrinos from this class of AGN.
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