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arXiv · 0709.1969

Time lags in Narrow-line Seyfert 1 galaxies and the origin of their soft excess emission

G. C. Dewangan·R. E. Griffiths·A. R. Rao·Surajit Dasgupta
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Abstract

The origin of soft X-ray excess emission from type 1 active galactic nuclei has remained a major problem for the last two decades. It has not been possible to distinguish alternative models for the soft excess emission despite the excellent data quality provided by XMM-Newton and Chandra. Here we present observations of time lags between the soft and hard band X-ray emission and discuss the implications to the models for the soft excess. We also device a method to distinguish the models for the soft excess using Suzaku's broadband capability.

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G. C. Dewangan, R. E. Griffiths, A. R. Rao, Surajit Dasgupta. 2007-09-12. Time lags in Narrow-line Seyfert 1 galaxies and the origin of their soft excess emission. https://doi.org/10.1143/ptps.169.244

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