A BeppoSAX observation of MKN6

Abstract

We have used the BeppoSAX satellite to study the broad band (0.5-100 keV) X-ray spectrum of the Seyfert 1.5 galaxy MKN6. The source is characterized by a power law of Gamma=1.7 [+0.08, -0.07] and there is no strong evidence for either a reflection bump or a high energy cut-off. We have detected a narrow iron line at 6.4 keV (rest frame) with an equivalent width of 98 [+33, -35] eV. MKN6 also exhibits strong and complex absorption. At least two components (NH_1 =1.34 [+0.4,-0.4] x 10^(22) cm^(-2) and NH_2 = 4.18 [+2.2, -1.3] x 10^(22) cm^(-2)) are present and they both partially cover the source with covering fractions of ~90% and ~50% respectively. Comparison with a previous ASCA observation indicates that in both absorbing columns the NH is variable over a 2 year timescale, while the covering fractions are constant over the same amount of time. The state of each absorber is cold or mildly photoionized. The Broad Line Region (BLR) is suggested as the possible location for this complex absorption.

5 pages, 5 figures, to be published in A&A

References in corpus (4)

• Ubiquitous variability of X-ray absorbing column densities in Seyfert 2 Galaxies
• Compton reflection and iron fluorescence in BeppoSAX observations of Seyfert type 1 galaxies
• The Mass of Quasar Broad Emission Line Regions
• Characterising the complex absorber in NGC 4151

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• Markarian 6: shocking the environment of an intermediate Seyfert
• BLR kinematics and Black Hole Mass in Markarian 6
• The broad-band XMM-Newton and INTEGRAL spectra of bright type 1 Seyfert galaxies
• The AGN nature of 11 out of 12 Swift/RXTE unidentified sources through optical and X-ray spectroscopy
• INTEGRAL observations of the field of the BL Lacertae object S5~0716+714
• A broad-band spectral analysis of eight radio loud type 1 AGN selected in the hard X-ray band
• The messy environment of Mrk 6