On the hypothesis of an advection-dominated flow in the core of NGC 1052: new constraints from a BeppoSAX observation

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dc.creatorGuainazzi, M.
dc.creatorOosterbroek, T.
dc.creatorAntonelli, L. A.
dc.creatorMatt, G.
dc.date2000-11-17
dc.date.accessioned2026-07-07T01:56:34Z
dc.date.available2026-07-07T01:56:34Z
dc.descriptionWe report the results of a broadband (0.1-100 keV) X-ray observation of the nearby elliptical galaxy NGC1052, performed with the BeppoSAX observatory. We confirm the presence of a bright (2-10 keV luminosity ~ 4 x 10^{42} erg/s) and strongly absorbed (NH ~ 2 x 10^{23} atoms/cm/cm) X-ray source. The flatness of the X-ray spectrum (photon index ~1.4), the estimated low accretion rate (m-dot \~ 10^{-4}) and the radio-to-X-ray spectral energy distribution suggest that this observation may represent the first direct measurement above 10 keV of an accretion-dominated flow in an elliptical galaxy.
dc.description5 Latex pages, 4 figures, Accepted for publication in Astronomy & Astrophysics Letters
dc.identifierhttps://arxiv.org/abs/astro-ph/0011338
dc.identifierhttp://arxiv.org/abs/astro-ph/0011338
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/2047
dc.subjectAstrophysics
dc.titleOn the hypothesis of an advection-dominated flow in the core of NGC 1052: new constraints from a BeppoSAX observation
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