Structure of the Universe at Small and High Redshifts

Details Structure of the Universe at Small and High Redshifts Structure of the Universe at Small and High Redshifts

Dec 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998tx19.confe.508d&link_type=abstract

Abstracts of the 19th Texas Symposium on Relativistic Astrophysics and Cosmology, held in Paris, France, Dec. 14-18, 1998. Eds.:

Astronomy and Astrophysics

Astrophysics

Scientific paper

The approximate theoretical description of the formation and evolution of the structure of the universe proposed by Demianski and Doroshkevich (1998) is compared with observed and simulated matter distribution at small and high redshifts. It is found that for the CDM-like power spectrum and suitable parameters of the cosmological model the effective matter compression reaches at small redshifts the observed scales Rwall ~20 - 25h^{-1}Mpc with the typical mean separation of wall-like elements DSLSS 50 - 70h^{-1}Mpc. We show that the same theoretical model explains well both the redshift, temperature and NHI distributions of absorption lines observed in the spectra of quasars at redshifts 2 <= z <= 3.5. The models with 0.3 <= Omega_m <= 0.5 give better description of the observed structure parameters.

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