On the light-bending model of X-ray variability of MCG-6-30-15

Abstract

We apply the light bending model of X-ray variability to Suzaku data of the Seyfert 1 galaxy MCG-6-30-15. We analyze the energy dependence of the root mean square (rms) variability, and discuss conditions necessary for the model to explain the characteristic decrease of the source variability around 5-8 keV. A model, where the X-ray source moves radially rather than vertically close to the disk surface, can indeed reproduce the reduced variability near the energy of the Fe Kalpha line, although the formal fit quality is poor. The model then predicts the energy spectra, which can be compared to observational data. The spectra are strongly reflection dominated, and do not provide a good fit to Suzaku spectral data of the source. The inconsistency of this result with some previous claims can be traced to our using data in a broader energy band, where effects of warm absorber in the spectrum cannot be neglected.

6 pages, PASJ, accepted

References in corpus (2)

• An absorption origin for the X-ray spectral variability of MCG-6-30-15
• What is the origin of the soft excess in AGN?

Cited by in corpus (8)

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• A Variable Partial Covering Model for the Seyfert 1 Galaxy MCG-6-30-15
• Origin of the Broad Iron Line Feature and the Soft X-ray Variation in Seyfert Galaxies
• On the driver of relativistic effects strength in Seyfert galaxies
• A model for the energy-dependent time-lag and rms of the heartbeat oscillations in GRS 1915+105
• Can the relativistic light bending model explain X-ray spectral variations of Seyfert galaxies?