48 citations · 114 across the 4 of their papers we have counts for
4 papers
X-Ray spectra from protons illuminating a neutron star
B. Deufel, C. P. Dullemond, H. C. Spruit
We consider the interaction of a slowly rotating unmagnetized neutron star with a hot (ion supported, ADAF) accretion flow. The virialized protons of the ADAF penetrate into the ne…
The transition from a cool disk to an ion supported flow
H. C. Spruit, B. Deufel
We show that the inner regions of a cool accretion disk in an X-ray binary can transform into an advective, ion supported accretion flow (an optically thin ADAF, here called ISAF),…
X-Ray spectra from accretion disks illuminated by protons
B. Deufel, C. P. Dullemond, H. C. Spruit
The X-ray spectrum from a cool accretion disk heated by virialized protons is computed. The cool disk is either embedded in a magnetically heated accretion disk corona or partly ex…
Detailed optical studies of the galactic supersoft X-ray source QR And (RXJ0019.8+2156)
B. Deufel, H. Barwig, D. Simic +2
We present high-speed long term photometric observations from 1992 to 1996 (UBVRI), as well as recently obtained (1997) spectrophotometric and high resolution spectroscopic studies…