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Suzaku discovery of iron absorption lines in outburst spectra of the X-ray transient 4U 1630-472
Aya Kubota, Tadayasu Dotani, Jean Cottam +12
We present the results of six Suzaku observations of the recurrent black hole transient 4U1630-472 during its decline from outburst from February 8 to March 23 in 2006. All observa…
Suzaku Observation of Two Ultraluminous X-Ray Sources in NGC 1313
T. Mizuno, R. Miyawaki, K. Ebisawa +19
Two ultraluminous X-ray sources (ULXs) in the nearby Sb galaxy NGC 1313, named X-1 and X-2, were observed with Suzaku on 2005 September 15. During the observation for a net exposur…
The iron K feature in Narrow Line Seyfert 1's: evidence for a P Cygni profile?
C. Done, M. A. Sobolewska, Marek Gierlinski +1
Narrow Line Seyfert 1 galaxies are generally accreting at high fractions of the Eddington limit. They can show complex X-ray spectra, with a strong `soft excess' below 2 keV and a…
What is the origin of the soft excess in AGN?
Malgorzata A. Sobolewska, Chris Done
We investigate the nature of the soft excess below 1 keV observed in AGN. We use the XMM-Newton data of the low redshift, optically bright quasar, PG 1211+143, and we compare it wi…
Failed disk winds; a physical origin for the soft X-ray excess?
N. J. Schurch, C. Done
The origin of the soft X-ray excess emission observed in many type-1 AGN has been an unresolved problem in X-ray astronomy for over two decades. We develop the model proposed Gierl…
Energy-dependent variability and the origin of the soft X-ray excess in AGN
Marek Gierlinski, Chris Done
The origin of the soft excess seen in many AGN below ~1 keV is still an unsolved problem. It is unlikely to represent a true continuum component as its characteristic 'temperature'…