On the possibility of collisionless subsonic accretion

Details On the possibility of collisionless subsonic accretion On the possibility of collisionless subsonic accretion

Dec 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...234..632g&link_type=abstract

Astrophysical Journal, Part 1, vol. 234, Dec. 1, 1979, p. 632-635.

Astronomy and Astrophysics

Astronomy

1

Collisionless Plasmas, Gas Flow, Magnetohydrodynamic Flow, Stellar Mass Accretion, Subsonic Flow, Black Holes (Astronomy), Hydrogen Ions, Ionized Gases, Steady State, Stellar Models

Scientific paper

The paper investigates the consequences of relaxing the requirement that gas in spherical accretion flows obeys the fluid dynamical equations. It is found that for a large range in gamma (the ratio of specific heats) the flow has a collisionless inner core. This allows the accretion rate to be unambiguously determined. The resulting flows are on the subsonic branches of Bondi's solutions.

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