The effect of radiation pressure on spherical accretion

Details The effect of radiation pressure on spherical accretion The effect of radiation pressure on spherical accretion

May 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978a%26a....66...99m&link_type=abstract

Astronomy and Astrophysics, vol. 66, no. 1-2, May 1978, p. 99-101.

Astronomy and Astrophysics

Astronomy

14

Neutron Stars, Pressure Effects, Radiation Pressure, Stellar Mass Accretion, Black Holes (Astronomy), Conservation Equations, Gas Flow, Opacity, Rates (Per Time)

Scientific paper

Spherical accretion onto a neutron star is analyzed, taking into account the effect of radiation pressure on the gas flow but neglecting the pressure of the infalling gas. The radiative-transfer equations are derived to first order in v/c, and the system is solved numerically with an approximate treatment of the opacity variation. Numerical results are given for a neutron star having a radius of 1 million cm and a mass of 1 solar mass. These results imply that the radiation flux in the comoving frame is greater than the Eddington limit and indicate that there are no transitions from supersonic to subsonic flow. Results are also discussed for a black hole of arbitrary mass.

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