Gamma-Rays from the Funnels of Thick Accretion Disks Around Active Galactic Nuclei

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dc.creatorBednarek, W.
dc.creatorKirk, J. G.
dc.date1994-08-04
dc.date.accessioned2026-07-07T02:19:20Z
dc.date.available2026-07-07T02:19:20Z
dc.descriptionWe analyse the propagation of particles in the narrow funnel of a thick accretion disk. It is assumed that: (1) the funnel walls emit black body radiation with temperature decreasing outwards; (2) the magnetic and electric fields are longitudinal in the funnel. Such a scenario is consistent with models in which a large potential drop is induced by a rotating massive black hole threaded by a magnetic field (Blandford & Znajek 1977, Macdonald & Thorne 1982). The interaction of relativistic protons with thermal photons from the funnel results in direct production of pairs and/or pions. We discuss the relative importance of these processes for different conditions in the funnel (temperature and electric field profiles). Injected pairs interact with thermal photons in the Thomson or Klein-Nishina regime. Under some conditions, a pair avalanche results, which we assume saturates in the production of stable bunches, containing almost equal numbers of electrons and positrons. As a consequence, highly collimated gamma-ray photons are produced. We obtain gamma-ray spectra from our model in order to test its applicability to the gamma-ray emitting AGNs recently reported by EGRET.
dc.description10 pages, uuencoded and compressed PostScript, to appear in A&A, preprint HD-MPK-94-BK1
dc.identifierhttps://arxiv.org/abs/astro-ph/9408013
dc.identifierhttp://arxiv.org/abs/astro-ph/9408013
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/9825
dc.subjectAstrophysics
dc.titleGamma-Rays from the Funnels of Thick Accretion Disks Around Active Galactic Nuclei
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