Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998astl...24..418r&link_type=abstract
Astronomy Letters, Volume 24, Issue 4, July 1998, pp.418-426; Pis'ma v Astronomicheskii Zhurnal, Vol. 24, p. 488
Astronomy and Astrophysics
Astronomy
4
Scientific paper
A statistical analysis of the distribution of C IV absorption systems observed in the spectra of quasars with cosmological redshift z is presented. Absorption systems in the redshift interval z_abs = 1.2-3.2 are considered. The isotropy (or anisotropy) of the distribution of matter is determined by comparing independent distributions of C IV absorption systems in opposite hemispheres with various orientations. The results indicate that the overall distribution is isotropic, but is non-uniform in the spatial-temporal interval considered. There are maxima in the concentration of absorption systems at z_abs = 1.46, 1.60, 1.78, 1.98, 2.14, 2.45, 2.64, and 2.86 (+/00.04), independent of the direction of observation. The resulting distribution of matter resembles embedded spheres corresponding to these z_abs values. The most probable origin for this distribution is the appearance of distinct epochs with durations from 200-600 million years (depending on the choice of cosmological model) during the process of cosmological evolution.
Kaminker A. D.
Ryabinkov A. I.
Varshalovich Dmitry A.
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