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The X-ray/gamma-ray spectrum of XTE J1550--564 in the very high state
Marek Gierlinski, Chris Done
We fit the broad-band X/gamma-ray spectrum (0.8-1000 keV) of the accreting black hole XTE J1550-564 in the very high state. The quasi-simultaneous data from ASCA, RXTE and OSSE sho…
Observing the effects of the event horizon in black holes
Chris Done, Marek Gierlinski
The key difference between neutron stars and black holes is the presence/absence of a solid surface. Recent attempts to detect this difference have concentrated on the quiescent lu…
Another Interpretation of the Power-law type Spectrum of an Ultraluminous Compact X-ray Source in IC 342
Aya Kubota, Chris Done, Kazuo Makishima
The ultraluminous compact X-ray sources (ULXs) generally show a curving spectrum in the 0.7--10 keV ASCA bandpass, which looks like a high temperature analogue of the disk dominate…
On the accretion geometry of Cyg X-1 in the low/hard state
F. Eugenio Barrio, Chris Done, Sergei Nayakshin
We fit the broad-band RXTE PCA and HEXTE spectrum from 3--200 keV with reflection models which calculate the vertical ionization structure of an X-ray illuminated disc. We consider…
The X-ray spectrum of the atoll source 4U 1608-52
Marek Gierlinski, Chris Done
The transient atoll source 4U 1608-52 had been extensively observed by the Rossi X-ray Timing Explorer RXTE during its 1998 outburst. We analyse its X-ray spectra as a function of…
Accretion Flows in X-ray Binaries
Chris Done
I review the X-ray observations of Galactic accreting black holes and neutron stars, and interpretions of these in terms of solutions of the accretion flow equations.