CMB power spectra and cosmological parameters from Planck PR4 with CamSpec

被引：47

作者：

Rosenberg, Erik ^{[1
]}

Gratton, Steven ^{[1
]}

Efstathiou, George ^{[1
]}

机构：

[1] Kavli Inst Cosmol Cambridge, Madingley Rd, Cambridge CB3 0HA, England

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2022年 / 517卷 / 03期

基金：

英国工程与自然科学研究理事会; 英国科学技术设施理事会;

关键词：

methods: data analysis; cosmic background radiation; cosmological parameters;

D O I：

10.1093/mnras/stac2744

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present angular power spectra and cosmological parameter constraints derived from the Planck PR4 (NPIPE) maps of the cosmic microwave background. NPI PE, 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 (Lambda CDM) 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 similar to 10 per cent tighter constraints, and we see both smaller error bars and a shift towards the ACDM values for beyond-Lambda CDM parameters including Omega(K) and A(L).

引用

页码：4620 / 4636

页数：17

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