Astronomy and Astrophysics – Astrophysics
Scientific paper
2001-10-23
Mon.Not.Roy.Astron.Soc. 328 (2001) L27
Astronomy and Astrophysics
Astrophysics
6 pages and one postscript figure. Accepted for publication in MNRAS letters
Scientific paper
10.1046/j.1365-8711.2001.05066.x
We present XMM-Newton European Photon Imaging Camera (EPIC) observations of the bright Seyfert 1 galaxy MCG-6-30-15, focusing on the broad Fe K$\alpha$ line at ~6keV and the associated reflection continuum, which is believed to originate from the inner accretion disk. We find these reflection features to be extremely broad and red-shifted, indicating its origin from the very most central regions of the accretion disk. It seems likely that we have caught this source in the ``deep minimum'' state first observed by Iwasawa et al. (1996). The implied central concentration of X-ray illumination is difficult to understand in any pure accretion disk model. We suggest that we are witnessing the extraction and dissipation of rotational energy from a spinning black hole by magnetic fields connecting the black hole or plunging region to the disk.
Begelman Mitchell C.
Kendziorra Eckhard
Molendi Silvano
Reeves James
Reynolds Christopher S.
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