A long hard look at MCG-6-30-15 with<i>XMM-Newton</i>

Abstract

We present the first results from a 325-ks observation of the Seyfert 1 galaxy MCG–6-30-15 with &lt;it&gt;XMM-Newton&lt;/it&gt; and &lt;it&gt;BeppoSAX&lt;/it&gt;. The strong, broad, skewed iron line is clearly detected and is well characterized by a steep emissivity profile within 6&lt;it&gt;r&lt;/it&gt;&lt;inf&gt;g&lt;/inf&gt; (i.e. 6&lt;it&gt;GM&lt;/it&gt;/&lt;it&gt;c&lt;/it&gt;2) and a flatter profile beyond. The inner radius of the emission appears to lie at about 2&lt;it&gt;r&lt;/it&gt;&lt;inf&gt;g&lt;/inf&gt;, consistent with results reported from both an earlier &lt;it&gt;XMM-Newton&lt;/it&gt; observation of MCG–6-30-15 by Wilms et al. and part of an &lt;it&gt;ASCA&lt;/it&gt; observation by Iwasawa et al. when the source was in a lower flux state. The radius and steep emissivity profile do depend however on an assumed incident power-law continuum and a lack of complex absorption above 2.5 keV. The blue wing of the line profile is indented, either by absorption at about 6.7 keV or by a hydrogenic iron emission line. The broad iron line flux does not follow the continuum variations in a simple manner.