The number of critical points in polytropic accretion onto black holes

Details The number of critical points in polytropic accretion onto black holes The number of critical points in polytropic accretion onto black holes

Jan 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26a...142..212c&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 142, no. 1, Jan. 1985, p. 212, 213.

Astronomy and Astrophysics

Astronomy

3

Black Holes (Astronomy), Critical Point, Gas Flow, Polytropic Processes, Schwarzschild Metric, Differential Equations, Steady Flow

Scientific paper

Ray (1980) pointed out that for accretion of polytropic gas by a
Schwarzschild black hole, there exists a second critical point for 1
< γ < 5/3. Here it is shown that the second critical point
is not physically meaningful in that the temperature at that critical
point is negative.

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