Abstract
The internal pressure can delay the accretion process of fluid flow onto a black hole by an order of magnitude compared with the particle case. The motion of accreting fluid elements insider ms (the marginally stable circular orbit of particles) is not free fall as previously suggested in the standard model of accretion disks. The contribution to the observable output of radiation from fluids in the region insider ms needs to be re-examined.
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Mr Tinggui Wang took part in the work of numerical computation.
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LU, J., Wei, C. Orbits of fluid elements accreting onto a black hole. Astrophys Space Sci 197, 283–288 (1992). https://doi.org/10.1007/BF00645741
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DOI: https://doi.org/10.1007/BF00645741