The structure of Lyman-Alpha systems

Details The structure of Lyman-Alpha systems The structure of Lyman-Alpha systems

Aug 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26a...202l...9m&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 202, no. 1-2, Aug. 1988, p. L9-L12.

Statistics

Computation

31

Intergalactic Media, Lyman Alpha Radiation, Quasars, Absorption Spectra, Computational Astrophysics, Density Distribution, Inhomogeneity

Scientific paper

A characterization of Ly-alpha systems which posits a decrease of density profile with radius proceeds on the concept that the observed distribution of H I column densities may substantially reflect the density distribution within Ly-alpha systems, rather than a variation in global system properties. The distribution generated by randomly-oriented thin disks with various surface-density laws is discussed; in general, a power-law distribution of column densities over many decades is obtainable from approximately a decade in radii. Some implications of clumpiness in the system's gas are noted.

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