Abstract
view Abstract Citations (4) References (12) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Local inhomogeneities in a Robertson-Walker background. III - Elementary growth rates in a flat background with a relativistic equation of state Helaby, C. ; Lake, K. Abstract An examination is undertaken of a class of inhomogeneities, embedded in a spatially flat Robertson-Walker background, which is restricted by the simplifying assumption that isotropic pressure equals local energy flux. Both a noninteracting mixture of blackbody photons and dust, and a baryon-conserving equilibrium mixture of blackbody photons and a neutral, two-component, relativistic Maxwell-Boltzmann gas, are used to describe the background. It is demonstrated through a comparison of the resultant mass of the inhomogeneities with the Jeans and particle horizon mass scales that varying the initial photon-to-baryon ratio in the background has a critical effect on all masses. Publication: The Astrophysical Journal Pub Date: December 1981 DOI: 10.1086/159480 Bibcode: 1981ApJ...251..429H Keywords: Background Radiation; Cosmology; Inhomogeneity; Relativity; Baryons; Black Body Radiation; Dust; Equations Of State; Photons; Astrophysics full text sources ADS |
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