The Effect of Pressure Gradient Force on an Accretion Disk Surrounding a Black-Hole

Details The Effect of Pressure Gradient Force on an Accretion Disk Surrounding a Black-Hole The Effect of Pressure Gradient Force on an Accretion Disk Surrounding a Black-Hole

Dec 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977pthph..58.1759h&link_type=abstract

Progress of Theoretical Physics, Vol. 58, No. 6, pp. 1759-1765

Physics

14

Scientific paper

A stationary thin-orbiting accretion disk surrounding a black-hole has been studied taking the pressure gradient force into account. We have found that under the condition appropriate for a binary X-ray source, with usual assumptions about viscous stress, the disk is largely modified when the pressure gradient force is taken into account. Therefore, current thin-disk models to account for observations of Cyg X-1 are self-inconsistent, since the pressure gradient force is neglected in those accretion disk models.

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