CMB lensing from Planck PR4 maps

Abstract

We reconstruct the Cosmic Microwave Background (CMB) lensing potential on the latest Planck CMB PR4 (NPIPE) maps, which include slightly more data than the 2018 PR3 release, and implement quadratic estimators using more optimal filtering. We increase the reconstruction signal to noise by almost $20\%$, constraining the amplitude of the CMB-marginalized lensing power spectrum in units of the Planck 2018 best-fit to $1.004\pm 0.024$ ($68\%$ limits), which is the tightest constraint on the CMB lensing power spectrum to date. For a base $\Lambda$CDM cosmology we find ${\sigma }_8{\Omega }_m^{0.25}=0.599\pm 0.016$ from CMB lensing alone in combination with weak priors and element abundance observations. Combination with baryon acoustic oscillation data gives tight $68\%$ constraints on individual $\Lambda$CDM parameters ${\sigma }_8=0.814\pm 0.016$, $H_0=68.1_{-1.1}^{+1.0}$km s${}^{-1}$ Mpc${}^{-1}$, ${\Omega }_m=0.313_{-0.016}^{+0.014}$. Planck polarized maps alone now constrain the lensing power to $7\%$.

15 pages, 9 figures, 4 tables. Matches version accepted for publication

References in corpus (8)

• The Clustering of the SDSS DR7 Main Galaxy Sample I: A 4 per cent Distance Measure at z=0.15
• Detection of Gravitational Lensing in the Cosmic Microwave Background
• CMB power spectra and cosmological parameters from Planck PR4 with CamSpec
• CMB temperature lensing power reconstruction
• Constraints on Cosmological Parameters from the 500 deg${}^2$ SPTpol Lensing Power Spectrum
• Full covariance of CMB and lensing reconstruction power spectra
• QuickPol: Fast calculation of effective beam matrices for CMB polarization
• Constraints on ${\tau }_{\mathrm{NL}}$ from Planck temperature and polarization

Cited by in corpus (9)

• A non-linear solution to the $S_8$ tension?
• BICEP / Keck XVII: Line of Sight Distortion Analysis: Estimates of Gravitational Lensing, Anisotropic Cosmic Birefringence, Patchy Reionization, and Systematic Errors
• Foreground Separation and Constraints on Primordial Gravitational Waves with the PICO Space Mission
• KiDS-1000: cross-correlation with Planck cosmic microwave background lensing and intrinsic alignment removal with self-calibration
• Real-world CMB lensing quadratic estimator power spectrum response
• CMB lensing with shear-only reconstruction on the full sky
• Constraints on ${\tau }_{\mathrm{NL}}$ from Planck temperature and polarization
• Impact of Anisotropic Birefringence on Measuring Cosmic Microwave Background Lensing
• Model independent variance cancellation in CMB lensing cross-correlations