Sound Speed and the Pseudo-Newtonian Potential

Details Sound Speed and the Pseudo-Newtonian Potential Sound Speed and the Pseudo-Newtonian Potential

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004pasj...56..959f&link_type=abstract

Publications of the Astronomical Society of Japan, Vol.56, No.6, pp. 959-963

Physics

8

Accretion, Accretion Disks, Astrophysical Jets, Black Hole Physics, Relativity

Scientific paper

We propose a special-relativistic correction to the sound speed calculated from the Paczynski and Wiita (1980) pseudo-Newtonian potential, in order to avoid divergence to infinity at the Schwarzschild radius. Under this correction, the re-scaled sound speed approaches c/√3 at the Schwarzschild radius; otherwise, it diverges there. Spherical flows onto a black hole are briefly discussed.

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