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Disc outbursts in various types of binary systems
Jean-Pierre Lasota
I discuss some aspects of the Disc Instability Model applied to outbursts in various types of binary systems. I lament the general lack of interest in the subject.
Stability of radiation-pressure dominated disks. I. The dispersion relation for a delayed heating alpha-viscosity prescription
Adam Ciesielski, Maciej Wielgus, Wlodek Kluzniak +4
We derive and investigate the dispersion relation for accretion disks with retarded or advanced heating. We follow the alpha-prescription but allow for a time offset (τ) between he…
Spinning up black holes with super-critical accretion flows
Aleksander Sadowski, Michal Bursa, Marek Abramowicz +4
We study the process of spinning up black holes by accretion from slim disks in a wide range of accretion rates. We show that for super-Eddington accretion rates and low values of…
The origin of variability of the intermediate-mass black-hole ULX system HLX-1 in ESO 243-49
J. -P. Lasota, T. Alexander, G. Dubus +5
The ultra-luminous intermediate-mass black-hole system HLX-1 in the ESO 243-49 galaxy exhibits variability with a possible recurrence time of a few hundred days. Finding the origin…