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arxiv astro-ph/9707065 v1 pith:T2MC7DLA submitted 1997-07-04 astro-ph

Hard X--ray detection of NGC 1068 with BeppoSAX

G.Matt , M.Guainazzi , F.Frontera , L.Bassani , W.N.Brandt , A.C.Fabian , F.Fiore , F.Haardt
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K.Iwasawa R.Maiolino G.Malaguti A.Marconi A.Matteuzzi S.Molendi G.C.Perola S.Piraino L.Piro
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keywords detectionabovebepposaxhardneutralx--rayarchetypalasca
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We report on the first detection above ~10 keV of the archetypal Compton-thick Seyfert 2 galaxy NGC 1068. This detection, obtained with the PDS instrument onboard BeppoSAX in the 20-100 keV range, confirms the hardness of the X--ray spectrum above a few keV (as indicated by ASCA observations and supports models envisaging a mixture of both neutral and ionized reflections of an otherwise invisible nuclear continuum, the neutral reflection component being the dominant one in hard X-rays.

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  1. Seyfert Galaxies as Neutrino Sources: An Outflow$-$Cloud Interaction Perspective

    astro-ph.HE 2025-11 unverdicted novelty 5.0

    Seyfert galaxies produce observed TeV neutrinos via proton-proton collisions in outflow-cloud bow shocks and can account for a substantial fraction of the diffuse astrophysical neutrino background at 10^4-10^5 GeV.