论文标题
来自Planck PR4的CMB功率谱和宇宙学参数与CAMSpec
CMB power spectra and cosmological parameters from Planck PR4 with CamSpec
论文作者
论文摘要
我们提供了宇宙微波背景的Planck PR4（NPIPE）地图得出的角功率谱和宇宙学参数约束。由普朗克合作于2020年发布的NPIPE是一种新的处理管道，用于从Planck数据中生成校准的频率图。我们使用这些地图创建了CAMSpec可能性的新版本，并将其应用于限制LCDM和单参数扩展。我们发现Npipe和Planck 2018地图在参数级别上的出色一致性，这表明Planck宇宙学对地图制作的实质变化是可靠的。 Npipe的较低噪声导致约10％的限制，我们看到较小的误差线和向LCDM值（包括Omega_k和A_Lens）的LCDM值转移。
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 LCDM 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 LCDM values for beyond-LCDM parameters including Omega_K and A_Lens.
