Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aipc..431..277y&link_type=abstract
Accretion processes in astrophysical systems: Some like it hot! - eigth astrophysics conference. AIP Conference Proceedings, Vo
Astronomy and Astrophysics
Astrophysics
Active And Peculiar Galaxies And Related Systems, Radiation Mechanisms, Polarization, Galactic Nuclei, Circumnuclear Matter, And Bulges
Scientific paper
Recently Reynolds & Begelman [1] have proposed a model in which the broad and highly redshifted iron line seen during a flux minimum of the light curve of MCG-6-30-15 may be explained by accretion onto a Schwarzschild black hole rather than a rapidly spinning Kerr black hole [2,3]. In their model they only consider the iron line in the reflected continuum, ignoring the absorption edge that will be present with reflection off ionized matter. We calculate in detail the X-ray spectrum expected from such a model and find that it should possess an absorption edge which is inconsistent with the data. We may, however, obtain a good fit to the iron line if the source undergoes a number of specific changes during the flux minimum which are difficult to justify. We conclude that the data on MCG-6-30-15 are more consistent with the Kerr over the Schwarzschild model.
Fabian Andrea C.
Ross Ronald R.
Young Andrew J.
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