359 citations · 5k across the 87 of their papers we have counts for
6 papers · 2 filters
An XMM-Newton observation of Ton S180: Constraints on the continuum emission in ultrasoft Seyfert galaxies
S. Vaughan, Th. Boller, A. C. Fabian +3
We present an XMM-Newton observation of the bright, narrow-line, ultrasoft Seyfert 1 galaxy Ton S180. The 0.3-10 keV X-ray spectrum is steep and curved, showing a steep slope above…
Multiple X-ray reflection from ionized slabs
R. R. Ross, A. C. Fabian, D. R. Ballantyne
Multiple reflection of X-rays may be important when an accretion disc and its hot corona have a complicated geometry, or if returning radiation due to gravitational light bending i…
The complex iron line in NGC 7469 observed by BeppoSAX
A. De Rosa, A. C. Fabian, L. Piro
In this letter we present analysis of BeppoSAX data from a long look at the Seyfert 1 galaxy NGC 7469. The presence of a soft excess below 0.8 keV is confirmed by our analysis and…
How the X-ray spectrum of a Narrow-Line Seyfert 1 galaxy may be reflection dominated
A. C. Fabian, D. R. Ballantyne, A. Merloni +3
A model for the inner regions of accretion flows is presented where, due to disc instabilities, cold and dense material is clumped into deep sheets or rings. Surrounding these dens…
Soft X-ray emission lines from photoionized accretion discs: constraints on their strength and width
D. R. Ballantyne, R. R. Ross, A. C. Fabian
We consider the properties of soft X-ray emission lines in the reprocessed emission from a photoionized accretion disc. Observations of these lines will be important in determining…
On the hard X-ray spectra of radio-loud active galaxies
D. R. Ballantyne, R. R. Ross, A. C. Fabian
Over the last few years X-ray observations of broad-line radio galaxies (BLRGs) by ASCA, RXTE and BeppoSAX have shown that these objects seem to exhibit weaker X-ray reflection fea…