A low-h high-Omega(0) universe

Abstract

view Abstract Citations (10) References (43) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS A Low-h High- Omega 0 Universe Harrison, Edward Abstract In a spirit of inquiry the properties of a nonstandard universe of h ~ 0.1 and {OMEGA}_0_ ~ 10 are contrasted with those of the standard universe of h ~ 1 and {OMEGA_0_ ~ 0.1, where h is given by the Hubble term H_0_ = 100h km s^-1^ Mpc^-1^ and {OMEGA}_0_ is the density parameter. The nonstandard universe favors the formation of large-scale structures and associated bulk streaming motions, particularly in the late stages of expansion that correspond to {OMEGA}_0_ = 10. The sub- Hubble sphere, in which peculiar motions dominate over the Hubble flow, may be sufficiently large in the nonstandard universe that distance indicators fail to reach the fully developed Hubble flow; similarly, the linear Hubble redshift-distance law tends to breakdown before reaching the fully developed Hubble flow. By mistaking streaming dilatation in the sub-Hubble sphere for Hubble flow, observers in the nonstandard universe might wrongly conclude that they occupy the standard universe, and find themselves confronted with problems of the kind that perplex cosmologists in the standard universe. Some cautionary remarks are made on reported measurements of H_0_, and on the need for a more agnostic attitude toward theoretical cosmology. Publication: The Astrophysical Journal Pub Date: March 1993 DOI: 10.1086/186751 Bibcode: 1993ApJ...405L...1H Keywords: Cosmology; Hubble Constant; Universe; Mass Distribution; Missing Mass (Astrophysics); Red Shift; Velocity Measurement; Astrophysics; COSMOLOGY: DISTANCE SCALE; COSMOLOGY: OBSERVATIONS; COSMOLOGY: THEORY full text sources ADS |