Correlations in the absorption lines of the quasar Q0420-388

Details Correlations in the absorption lines of the quasar Q0420-388 Correlations in the absorption lines of the quasar Q0420-388

Jul 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...218...19b&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 218, no. 1-2, July 1989, p. 19-23.

Astronomy and Astrophysics

Astrophysics

21

Astronomical Spectroscopy, Cosmology, Quasars, Absorption Spectra, Correlation, Line Spectra, Lyman Alpha Radiation

Scientific paper

The system of Ly-alpha absorption lines in the redshift range of 2.47-3.035 of the quasar Q0420-388 is tested for clustering features. A Weibull distribution fits the observed local distribution quite well, and this is found in simulations to originate mainly from line-blending. In addition evidence for intrinsic structure is obtained: (1) the void at z = 2.575 (Crotts, 1987, further studied by Ostriker et al., 1988) is shown to be a real feature at the 98 percent confidence level, and (2) significant fluctuations on 6 scales are found, indicating structures from 6.2 to 64/h Mpc.

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