Lyman-alpha forests and the evolution of the universe

Details Lyman-alpha forests and the evolution of the universe Lyman-alpha forests and the evolution of the universe

Sep 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992an....313..265l&link_type=abstract

Astronomische Nachrichten (ISSN 0004-6337), vol. 313, no. 5, p. 265-273.

Mathematics

Logic

9

Absorption Spectra, Cosmology, Lyman Alpha Radiation, Quasars, Universe, Bubbles, Evolution (Development), Regression Analysis, Space Density

Scientific paper

An analysis of the evolution of the universe is presented which is based on the assumption that the bubble structure in the large-scale distribution of matter observed in the Galactic neighborhood was at rest in comoving coordinates at least since the emission of the quasar light, and that the Ly-alpha forests in the quasar spectra is due to the cuts of the light beams through hydrogen filaments within the walls of the bubble structure. Depending on the Hubble parameter, this method reveals that the value of the presented mean matter density is 2.6 h-squared x 10 exp -28 kg/cu m and a cosmological constant Lambda = 3.77 h-squared x 10 exp -52 /sq m (with h = H0/(100 km/s Mpc)). All models with Lambda = 0 must be excluded. The curvature of space is positive, and the curvature radius is 3.3 times the Hubble radius. The age is 2.8 time the Hubble age.

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