We analyze a cosmological model featuring an interaction between dark energy and dark matter in light of the measurements of the Cosmic Microwave Background released by three independent experiments: the most recent data by the Planck satellite and the Atacama Cosmology Telescope, and WMAP (9-year data). We show that different combinations of the datasets provide similar results, always favoring an interacting dark sector with a 95% C.L. significance in the majority of the cases. Remarkably, such a preference remains consistent when cross-checked through independent probes, while always yielding a value of the expansion rate H 0 consistent with the local distance ladder measurements. We investigate the source of this preference by scrutinizing the angular power spectra of temperature and polarization anisotropies as measured by different experiments.
A consistent view of interacting dark energy from multiple CMB probes
Yuejia Zhai,William Giaré,C. van de Bruck,E. D. Valentino,O. Mena,Rafael C. Nunes
Published 2023 in Journal of Cosmology and Astroparticle Physics
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2023
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Journal of Cosmology and Astroparticle Physics
- Publication date
2023-03-14
- Fields of study
Physics
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