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<i>XMM</i>-EPIC observation of MCG-6-30-15: direct evidence for the extraction of energy from a spinning black hole?

J. WilmsInstitut für Astronomie und Astrophysik, Abt. Astronomie, Universität Tübingen, Sand 1, D-72076 Tübingen, GermanyC. S. ReynoldsDepartment of Astronomy, University of Maryland, College Park, MD 20742, USAMitchell C. BegelmanDepartment of Astrophysical and Planetary Sciences, University of Colorado, Boulder, CO 80309, USAJ. N. ReevesX-Ray Astronomy Group, Department of Physics and Astronomy, Leicester University, Leicester LE1 7RHS. MolendiIstituto di Fisica Cosmica, CNR, via Bassini 15, I-20133 Milano, ItalyR. StaubertInstitut für Astronomie und Astrophysik, Abt. Astronomie, Universität Tübingen, Sand 1, D-72076 Tübingen, GermanyE. KendziorraInstitut für Astronomie und Astrophysik, Abt. Astronomie, Universität Tübingen, Sand 1, D-72076 Tübingen, Germany

2001en

ABI

Annotatsiya

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 Kα line at ∼6 keV and the associated reflection continuum, which is believed to originate from the inner accretion disc. We find these reflection features to be extremely broad and redshifted, indicating an origin in the very central regions of the accretion disc. It seems likely that we have caught this source in the ‘deep minimum’ state first observed by Iwasawa et al. The implied central concentration of X-ray illumination is difficult to understand in any pure accretion disc 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 disc.

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DOI: 10.1046/j.1365-8711.2001.05066.x

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