Planck ISW-lensing likelihood and the CMB temperature
arXiv:2209.07395 · doi:10.1103/PhysRevD.106.103507
Abstract
We present a new Planck CMB lensing-CMB temperature cross-correlation likelihood that can be used to constrain cosmology via the Integrated Sachs-Wolfe (ISW) effect. CMB lensing is an excellent tracer of ISW, and we use the latest PR4 Planck data maps and lensing reconstruction to produce the first public Planck likelihood to constrain this signal. We demonstrate the likelihood by constraining the CMB background temperature from Planck data alone, where the ISW-lensing cross-correlation is a powerful way to break the geometric degeneracy, substantially improving constraints from the CMB and lensing power spectra alone.
Matches version accepted by PRD with minor changes. ISW-lensing and lensing likelihoods available at https://github.com/carronj/planck_PR4_lensing
References in corpus (6)
- How well do we understand cosmological recombination?
- On the assumption of Gaussianity for cosmological two-point statistics and parameter dependent covariance matrices
- Full covariance of CMB and lensing reconstruction power spectra
- H0 tension or T0 tension?
- Impact of Scale Dependent Bias and Nonlinear Structure Growth on the ISW Effect: Angular Power Spectra
- Constraining neutrino masses with the ISW-galaxy correlation function