Investigating Cosmic Discordance
Abstract
We show that a combined analysis of cosmic microwave background anisotropy power spectra obtained by the Planck satellite and luminosity distance data simultaneously excludes a flat universe and a cosmological constant at 99% confidence level. These results hold separately when combining Planck with three different data sets: the two determinations of the Hubble constant from Riess et al. and Freedman et al., and the Pantheon catalog of high-redshift Type Ia supernovae. We conclude that either the Lambda cold dark matter model needs to be replaced by a different paradigm, or else there are significant but still undetected systematics. Our result calls for new observations and stimulates the investigation of alternative theoretical models and solutions.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- February 2021
- DOI:
- 10.3847/2041-8213/abe1c4
- arXiv:
- arXiv:2003.04935
- Bibcode:
- 2021ApJ...908L...9D
- Keywords:
-
- Cosmological models;
- Closed universe;
- Early universe;
- Dark energy;
- Hubble constant;
- Cosmic microwave background radiation;
- Cosmic background radiation;
- 337;
- 256;
- 435;
- 351;
- 758;
- 322;
- 317;
- Astrophysics - Cosmology and Nongalactic Astrophysics;
- General Relativity and Quantum Cosmology;
- High Energy Physics - Phenomenology
- E-Print:
- 5 pages, 4 figures. Matches published version