Recession parameters versus cosmic time

Details Recession parameters versus cosmic time Recession parameters versus cosmic time

Jun 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998amjph..66..517l&link_type=abstract

American Journal of Physics, Volume 66, Issue 6, pp. 517-524 (1998).

Physics

Educational Aids, Observational Cosmology, Distances, Redshifts, Radial Velocities, Spatial Distribution Of Galaxies

Scientific paper

Theoretical relations for such recession parameters as the Earth-galaxy (L) and Earth-photon (Lp) separation distances, Hubble parameter (H), universe density ratio (Ω), scale factor (R), and expansion factor distance (A) are given as functions of cosmic time (t). These relations are based on the standard flat, closed, and open models of the universe with the Einstein cosmological constant Λ=0. Comparisons are made of these models using selected values of Ho and Ωo, which for each model indicate an age of the universe that is consistent with ages reported for the oldest stars.

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