Confinement and internal structure of radiatively accelerated quasar clouds

Details Confinement and internal structure of radiatively accelerated quasar clouds Confinement and internal structure of radiatively accelerated quasar clouds

Sep 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976apj...208..286w&link_type=abstract

Astrophysical Journal, vol. 208, Sept. 1, 1976, pt. 1, p. 286-291.

Physics

20

Acceleration (Physics), Lyman Alpha Radiation, Quasars, Radiative Transfer, Gas Density, Gas Pressure, Hydrogen Clouds, Pressure Distribution

Scientific paper

The equation of transfer for Lyman-alpha and the Lyman continuum is solved for plane-parallel slabs of hydrogen with optical depths up to 25,000 in the line center in order to find the radiative acceleration as a function of position in the slab. The distribution of gas pressure and density which yields a constant acceleration and which matches the prescribed external pressure on the boundaries is then found. For optical depths less than about 36, solutions are obtained for arbitrarily low ratios of external pressure to incident radiation pressure. For optical depths larger than this, solutions are possible only if this ratio exceeds a critical value. The acceleration of the cloud goes to zero, and the column density to infinity, as this critical value is approached.

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