QSO Lyman limit absorption

Details QSO Lyman limit absorption QSO Lyman limit absorption

Jul 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982natur.298..427t&link_type=abstract

Nature, vol. 298, July 29, 1982, p. 427-432. Research supported by the Science and Engineering Research Council.

Mathematics

Logic

78

Absorption Spectra, Lyman Spectra, Quasars, Red Shift, Cosmology, Galactic Evolution, Optical Thickness, Spectral Line Width, Statistical Analysis, Velocity Distribution

Scientific paper

The redshift distribution of QSO absorption systems which are optically thick in the Lyman continuum matches that of a nonevolving population of absorbers in a standard Friedmann cosmological model over the redshift range 0.4-3.5. The density of absorbers per unit velocity in the QSO rest frame is roughly constant for v/c between -0.001 to 0.2 and shows a rapid increase with QSO emission redshift, in accord with an intervening origin for the absorbers but contrary to expectation were the material intrinsic to the QSOs.

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