The X ray spectrum of MCG-6-30-15

Astronomy and Astrophysics – Astronomy

Scientific paper

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Accretion Disks, Iron, K Lines, Seyfert Galaxies, Spectrum Analysis, X Ray Spectra, Galactic Radiation, Photoionization, Spectral Bands, Spectral Signatures

Scientific paper

EXOSAT and Ginga observations of the type I Seyfert galaxy MCG-6-30-15 revealed a complex picture of the X-ray spectrum. The soft excess found in the first EXOSAT observation was confirmed in the spectral analysis of the EXOSAT long-look data. Evidence for iron features arising from cold material close to the nucleus is obtained. The iron features were confirmed by the Ginga LAC. The X-ray observations provide good evidence for an accretion disc in MCG-6-30-15 which presents a signature both in the soft band and around 7 keV where measurable iron features are produced. There is also evidence for a possible warm absorber around the central source.

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