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• W3124395322 abstract "We present the first results from an XMM-Newton observation of the Fanaroff-Riley type I galaxy NGC 4261, which harbors a supermassive black hole and a low-ionization nuclear emission-line region. Here we focus on the X-ray properties of the nucleus, using the European Photon Imaging Camera pn data. The 0.6-10 keV continuum in best fitted by a thermal component with kT ~ 0.7 keV, plus a power law with photon index Γ ~ 1.4, absorbed by a column density NH ~ 4 × 1022 cm-2. An unresolved Fe K emission line with EW ~ 280 eV is detected at ~7 keV. We also detect, for the first time, short-term flux variability from the nucleus, on a timescale of 3-5 ks. The short-term variations rule out an advection-dominated accretion flow as the only production mechanism of the X-ray continuum. Instead, we argue that the inner jet contributes to the emission in the X-ray band." @default.
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• W3124395322 date "2003-03-20" @default.
• W3124395322 modified "2023-09-23" @default.
• W3124395322 title "The [ITAL]XMM-Newton[/ITAL] View of the Nucleus of NGC 4261" @default.
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• W3124395322 doi "https://doi.org/10.1086/374612" @default.
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