Exploring $Λ$CDM extensions with SPT-3G and Planck data: 4$σ$ evidence for neutrino masses and implications of extended dark energy models for cosmological tensions ...
We present new cosmological constraints in a set of motivated extensions of the $Λ$CDM model using the polarization and gravitational lensing measurements from the South Pole Telescope and the Planck CMB temperature observations at large angular scales. In all cosmological scenarios, this CMB data b...
| Main Authors: | , , |
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| Format: | Report |
| Language: | unknown |
| Published: |
arXiv
2022
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.48550/arxiv.2203.03666 https://arxiv.org/abs/2203.03666 |
| Summary: | We present new cosmological constraints in a set of motivated extensions of the $Λ$CDM model using the polarization and gravitational lensing measurements from the South Pole Telescope and the Planck CMB temperature observations at large angular scales. In all cosmological scenarios, this CMB data brings the clustering measurements into agreement with the low-redshift probes of large-scale structure. Combining the SPT-3G, SPTpol and Planck large-scale temperature data with the latest full-shape BOSS and BAO measurements, information from the weak lensing and photometric galaxy clustering, and Pantheon supernova set we find a $4σ$ evidence for nonzero neutrino mass, $\sum m_ν=0.22\pm0.06\,{\rm eV}$.Breaking the CMB degeneracies between $\sum m_ν$ and the cosmological parameters by the BOSS data is a major contribution to our neutrino mass measurement. The future CMB data would allow for investigating this measurement. Then we explore the possibility of dynamical dark energy with two model-independent ... : 39+2+24 pages, 10+8 figures, 6+11 tables. SPT-3G likelihood for montepython environment is available at http://github.com/ksardase/SPT3G-montepython. v2: minor corrections, Bayesian analysis included. v3: major revision, supernova data is included ... |
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