Other
Scientific paper
Sep 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...284l...1h&link_type=abstract
Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 284, Sept. 1, 1984, p. L1-L4.
Other
34
Background Radiation, Cosmology, Galactic Evolution, Mass Distribution, Relic Radiation, Anisotropy, Hydrodynamics, Pressure Gradients
Scientific paper
A test is proposed of the hypothesis that the large-scale distribution of galaxies is generated by large-scale pressure gradients in protogalactic gas, due to pregalactic explosions or other inhomogeneous energy sources at redshifts of less than about 10. Pressure inhomogeneities in hot gas lead to anisotropy in the microwave background via the Sunyaev-Zel'dovich C ompton heating effect. The amplitude of the predicted anisotropy is estimated using simplified models and is found to conflict with current upper limits. Several possible complications are considered and are found to increase the predicted anisotropy. Hydrodynamical effects may significantly affect the matter distribution on galactic scales but probably cannot produce the large-scale galaxy clustering on scales of the order of about 10 Mpc without violating this constraint.
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