Clumpy wind accretion in Cygnus X-1

Cygnus X-1 is one of the brightest X-ray sources observed and shows the X-ray intensity variations on time scales from milliseconds to months in both the soft and hard X-rays. In the recent work by Ishika Palit, Agnieszka Janiuk and Bożena Czerny, we aim to understand the physical mechanism responsible for the short timescale X-ray variability(<100 s) of the source in its Hard/Low state. The simulated GR Hydrodynamical model with shock solutions is in good agreement with the observed power density spectra of the source.
Article in print in ApJ is available on-line under this link.
Schematic

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