6 papers
A self-regulating braking mechanism in black hole X-ray binaries
Friedrich Meyer, Emmi Meyer-Hofmeister
The outbursts of black hole X-ray transients can be understood as caused by a limit cycle instability in the accretion disk, similar to dwarf nova outbursts. For adequately low mas…
Evaporation: The change from accretion via a thin disk to a coronal flow
Friedrich Meyer, Bifang Liu, Emmi Meyer-Hofmeister
We present a model for a corona above a geometrically thin standard disk around a black hole. This corona is fed by matter from the thin disk which evaporates from the cool layers…
A limit for the mass transfer rate in soft X-ray transients
E. Meyer-Hofmeister, F. Meyer
Many black hole X-ray transients are in a low state for several decades until an outburst occurs. We interpret this outburst behaviour as a marginal occurrence of a dwarf nova type…
Black hole soft X-ray transients: evolution of the cool disk and mass supply for the ADAF
E. Meyer-Hofmeister, F. Meyer
Using the black hole transient X-ray source A0620-00 as an example we study the physical interplay of three theoretical constituents for modelling these transient sources: (1) the…
On the ultimate fate of AM Her stars
F. Meyer, E. Meyer-Hofmeister
We suggest, that the magnetic field of the white dwarf in AM Her systems loses coupling to the secondary star when the latter becomes non-magnetic at the transition from a late mai…
WZ Sagittae - an old dwarf nova
E. Meyer-Hofmeister, F. Meyer, B. F. Liu
We model the evolution of the accretion disk of WZ Sagittae during the long quiescence. We find that the large amount of mass in the disk derived from the outburst luminosity is a…