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Implications of Symmetry and Pressure in Friedmann Cosmology. III. Point Sources of Dark Energy that Tend toward Uniformity

Authors :
J. Runburg
Kevin S. Croker
Duncan Farrah
Source :
The Astrophysical Journal. 900:57
Publication Year :
2020
Publisher :
American Astronomical Society, 2020.

Abstract

We show that point sources of dark energy can explain accelerated late-time expansion and, simultaneously, satisfy observational constraints on massive compact objects. Population III stellar collapse into GEneric Objects of Dark Energy (GEODEs) between 8 ≲ z ≲ 20 mimics the observed ΩΛ within the typical concordance cosmology. We determine the appropriate dynamical model of aggregate GEODE flow within covariant linear perturbation theory. We find that all continuum fluid properties, at large scales, are determined by the internal properties and spin of individual GEODEs. For large spin, the spatial distribution of GEODEs becomes uniform on scales ≲200 Mpc. The power spectrum of cold dark matter is essentially unaltered. A Population III GEODE scenario provides an observationally consistent physical origin for accelerated late-time expansion while imposing no new constraints on structure formation.

Details

ISSN :
15384357 and 0004637X
Volume :
900
Database :
OpenAIRE
Journal :
The Astrophysical Journal
Accession number :
edsair.doi...........aaa1afd059a6de20e3f2f98a2bfa8688
Full Text :
https://doi.org/10.3847/1538-4357/abad2f