Abstract
view Abstract Citations (5) References (13) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS An Explosive Origin of Bubbles in the Distribution of Galaxies? Ellis, G. F. R. ; Fairall, A. P. Abstract Rather than involving any astrophysical development, the expansion of bubbles in a standard Friedmann-Lemaitre-Robertson-Walker universe is explored by constraints on velocity and the redshifts corresponding to an explosive origin (sometime after decoupling) and "freezing out." Cases of (a) constant velocity propagation and (b) geodesic expansion (as a limiting case) are considered for the Einstein-de Sitter, the high-density relativistic inflationary scenario, the low-density Milne, and the general pressure-free cosmological models. Plots of expected bubble sizes are provided. If the velocities are comparable to those produced by supernovae, difficulties arise in the high-density models in creating bubbles of sufficient diameter to match the observational data. However, geodesic expansion can explain the observed uniformity in maximum bubble size by showing insensitivity to the initial redshift. Although higher velocities produce larger bubbles, they are expected to destroy the uniformity. Publication: The Astrophysical Journal Pub Date: April 1988 DOI: 10.1086/166165 Bibcode: 1988ApJ...327...34E Keywords: Cosmology; Galactic Clusters; Phase Transformations; Red Shift; Universe; Computational Astrophysics; Hubble Constant; Perturbation Theory; Astrophysics; EARLY UNIVERSE; GALAXIES: CLUSTERING full text sources ADS |
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