Constraints on power law cosmology from cosmic chronometer, standard ruler, and standard candle data
Abstract
In this paper I investigate how well simple power law expansion fits observational data in comparison to the standard ΛCDM model. I analyze a data set consisting of cosmic chronometer, standard ruler, and standard candle measurements, finding that the ΛCDM model provides a better fit to most combinations of these data than the power law ansatz.
- Publication:
-
Journal of Cosmology and Astroparticle Physics
- Pub Date:
- August 2021
- DOI:
- 10.1088/1475-7516/2021/08/051
- arXiv:
- arXiv:2102.08457
- Bibcode:
- 2021JCAP...08..051R
- Keywords:
-
- dark energy experiments;
- dark energy theory;
- Astrophysics - Cosmology and Nongalactic Astrophysics;
- General Relativity and Quantum Cosmology;
- High Energy Physics - Phenomenology;
- High Energy Physics - Theory
- E-Print:
- 18 pages, 2 figures. The previous version of this paper was rejected by Phys. Rev. D