BeppoSAX confirms extreme relativistic effects in the X-ray spectrum of MCG-6-30-15

Details BeppoSAX confirms extreme relativistic effects in the X-ray spectrum of MCG-6-30-15 BeppoSAX confirms extreme relativistic effects in the X-ray spectrum of MCG-6-30-15

1998-11-16

arxiv.org/abs/astro-ph/9811246v1

Astronomy and Astrophysics

Astrophysics

4 pages, Latex, 5 Postscript figures, accepted for publication in Astronomy & Astrophysics

Scientific paper

We report the first simultaneous measure of the X-ray broadband (0.1--200 keV) continuum and of the iron K-alpha fluorescent line profile in the Seyfert 1 galaxy MCG-6-30-15. Our data confirms the ASCA detection of a skewed and redshifted line profile (Tanaka et al. 1995). The most straightforward explanation is that the line photons are emitted in the innermost regions of a X-ray illuminated relativistic disk. The line Equivalent Width (~200 eV) is perfectly consistent with the expected value for solar abundances, given the observed amount of Compton reflection. We report also the discovery of a cut-off in the nuclear primary emission at the energy of ~160 keV.

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