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Program Universe and Recent Cosmological Results
Author(s) -
H. Pierre Noyes
Publication year - 1999
Publication title -
osti oai (u.s. department of energy office of scientific and technical information)
Language(s) - English
Resource type - Reports
DOI - 10.2172/9984
Subject(s) - physics , cosmological constant , hubble's law , universe , metric expansion of space , astrophysics , supernova , age of the universe , omega , type (biology) , astronomy , baryon , theoretical physics , cosmology , dark energy , de sitter universe , quantum mechanics , ecology , biology
Recent improvements in astronomical observations lead to the conclusion that the Hubble constant lies between 60 and 80 Mpc km$^{-1}$ sec$^{-1}$ and the age of the universe between 11 and 14 Gigayears. Taken together with recent observations of distant type Ia supernovae and the cosmic background radiation, these limits allow a check of the consequences of predictions made a decade ago using program universe and the combinatorial hierarchy that the ratio of baryons to photons is $1/256^4$ and of dark to baryonic matter is 12.7. We find that the restrictions on the matter content of the universe and the cosmological constant are within, and much tighter than, the limits established by conventional means. The situation is further improved if we invoke an estimate of the normalized cosmological constant made by E. D. Jones of $\Omega_{\Lambda} \sim 0.6$. This opens a ``window of opportunity'' to get the predictions of the ANPA program in front of the relevant professional community {\it before} precise observations lead to a consensus. We urge ANPA members to join us in the assault on this breach in the walls of establishment thinking.

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