3 papers
astro-ph2007★ 15 cited
Towards a New Standard Theory for Astrophysical Disk Accretion
Zdenka Kuncic, Geoffrey V. Bicknell
We briefly review recent developments in black hole accretion disk theory, placing new emphasis on the vital role played by magnetohydrodynamic (MHD) stresses in transporting angul…
astro-ph2007★ 4 cited
Black hole mass estimates from soft X-ray spectra
R. Soria, Z. Kuncic
In the absence of direct kinematic measurements, the mass of an accreting black hole is sometimes inferred from the X-ray spectral parameters of its accretion disk; specifically, f…
astro-ph2006★ 1 cited
Soft-excess in ULX spectra: the chilled-disk scenario
Roberto Soria, Anabela Goncalves, Zdenka Kuncic
Soft X-ray spectra of ULXs show small deviations from a power-law model, that can be attributed to reprocessing in a fast, ionized outflow, or to thermal emission from a cool disk.…