Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006an....327.1067b&link_type=abstract
Astronomische Nachrichten, Vol.327, Issue 10, p.1067
Astronomy and Astrophysics
Astronomy
3
Galaxies: Active, Galaxies: Individual (Mcg-5-23-16), Galaxies: Seyfert, X-Rays: Galaxies
Scientific paper
We present the results of the simultaneous XMM-Newton and Chandra observations of the bright Seyfert 1.9 galaxy MCG-5-23-16, which is one of the best known examples of a relativistically broadened iron K\alpha line. We find that: a) the soft X-ray emission is likely to be dominated by photoionized gas, b) the complex iron emission line is best modelled with a narrow and a broad component with a FWHM ˜ 44000 km/s. This latter component has an EW˜ 50 eV and its profile is well described with an emission line mainly originating from the accretion disk a few tens of gravitational radii from the central black hole and viewed with an inclination angle ˜ 40o. We found evidence of a possible sporadic absorption line at ˜ 7.7 keV which, if associated with Fe XXVI K\alpha resonance absorption, is indicative of a possible high velocity (v˜ 0.1 c) outflow.
Braito Valentina
Dewangan Gulab
George Ian
Griffiths Richard
Markowitz Alex
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