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Non-Stationary Discs and Instabilities
Omer Blaes, Yan-Fei Jiang, Jean-Pierre Lasota +1
We review our current knowledge of thermal and viscous instabilities in accretion discs around compact objects. We begin with classical disc models based on analytic viscosity pres…
The stress at the ISCO of black-hole accretion discs is not a free parameter
Jean-Pierre Lasota, Marek Abramowicz
Radiation from the "plunging region" (the space between the innermost stable circular orbit (ISCO) and the black-hole (BH) surface) of an accretion flow onto a BH is supposed to ad…
The Perils of Pdot
Andrew King, Jean-Pierre Lasota
Schaefer (2024) has recently published observations of binary period derivatives for 52 cataclysmic variables, and concluded that these strongly conflict with all proposed…
Unequal-mass, highly-spinning binary black hole mergers in the stable mass transfer formation channel
Aleksandra Olejak, Jakub Klencki, Xiao-Tian Xu +3
The growing database of gravitational-wave (GW) detections with the binary black holes (BHs) merging in the distant Universe contains subtle insights into their formation scenarios…
SN 2022jli: The ultraluminous birth of a low-mass X-ray binary
Andrew King, Jean-Pierre Lasota
Observations show that the 12.4 d binary system descending from the recent supernova SN 2022jli closely fits hypotheses of how low-mass X-ray binaries form, but requires an apparen…
Problems in the astrophysics of accretion onto compact celestial bodies
Jean-Pierre Lasota
Although during the last decade new observations and new theoretical results have brought better understanding of the physics of accretion onto compact objects, many old and severa…