CMB power spectra and cosmological parameters from Planck PR4 with CamSpec

By E. Rosenberg, Steven Gratton, G. Efstathiou. 2022

208 citations recorded by the source corpus.

We present angular power spectra and cosmological parameter constraints derived from the Planck PR4 ( NPIPE ) maps of the Cosmic Microwave Background. NPIPE , released by the Planck Collaboration in 2020, is a new processing pipeline for producing calibrated frequency maps from Planck data. We have created new versions of the CamSpec likelihood using these maps and applied them to constrain Λ CDM and single-parameter extensions. We find excellent consistency between NPIPE and the Planck 2018 maps at the parameter level, showing that the Planck cosmology is robust to substantial changes in the mapmaking. The lower noise of NPIPE leads to ~10% tighter constraints, and we see both smaller error bars and a shift toward the Λ CDM values for beyond- Λ CDM parameters including Ω 𝐾 and 𝐴 𝐿 .

Subfields: Astronomy and Astrophysics, Instrumentation

View Paper: https://www.semanticscholar.org/paper/298ebaf53680d9c144609a15aaedb55c0596f3ac

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In Astronomy and Astrophysics

1. A. Banday
2. David N. Spergel
3. Mark Halpern
4. K. G'orski
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Citations in the corpus

• The Atacama Cosmology Telescope: DR6 Gravitational Lensing Map and Cosmological Parameters (2023, methodology): “It should be noted that this preference for negative curvature weakens in the recent Planck NPIPE re-analysis of CMB anisotropies (Rosenberg et al. 2022).”
• Cosmological parameters derived from the final Planck data release (PR4) (2023, methodology): “In Rosenberg et al. (2022), the CamSpec likelihood associated with low-(cid:96) likelihoods from Planck 2018 also showed a decrease in the A L parameter in Planck PR4 data compared to PR3 data, reducing the di ff erence from unity from 2.4 σ to 1.7 σ .”