CMB power spectra and cosmological parameters from Planck PR4 with CamSpec. Issue 3 (26th September 2022)

• Record Type: Journal Article
• Authors: Rosenberg, Erik; Gratton, Steven; Efstathiou, George
• Is Part Of: Monthly notices of the Royal Astronomical Society. Volume 517:Issue 3(2022)
• Page Start: 4620
• Page End: 4636
• Publication Date: 2022-09-26
• Subjects: methods: data analysis -- cosmic background radiation -- cosmological parameters; Astronomy -- Periodicals; Periodicals; 520.5
• DOI: 10.1093/mnras/stac2744
• Languages: English
• ISSNs: 0035-8711

Abstract

ABSTRACT: 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 the lambda cold dark matter (ΛCDM) model 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 per cent tighter constraints, and we see both smaller error bars and a shift towards the ΛCDM values for beyond-ΛCDM parameters including Ω K and AL .