SPT-3G Data Products

SPT-3G 2018 Lensing Bandpowers and Likelihood

This page provides data products associated with the cosmological parameters analysis of the SPT-3G 2018 CMB lensing power spectra over 1500 square degrees described in arXiv:2308.11608, Pan et al., (2023). The lensing band powers are presented over the multipole range 50 <= L <= 2000 and can be used to constrain cosmological models using the Cobaya likelihood package provided below.

If you have any questions regarding this data set or its use, please contact Federico Bianchini (fbianc_at_stanford_dot_edu) or Zhaodi Pan (panz_at_anl_dot_gov).

Bandpowers

Bandpowers and uncertainties are given in [L_b(L_b + 1)]² /2/pi units. Each row is one ell-bin. The columns are (1) bin number, (2) L_min, (3) L_max, (4) center of bin, (5) estimated clpp bandpower, (6) sigma on the estimated clpp bandpower, (7) lensing amplitude compared to the 2018 Planck TTTEEE+lowE+lensing cosmology.

Note that these bandpowers are not foreground subtracted. The foreground contamination template is provided in the Cobaya likelihood dataset below.

Likelihood Code

We provide files in a zipped file here the SPT-3G 2018 1500d CMB lensing likelihood. The Cobaya likelihood contains the lensing bandpowers, the corresponding lensing bandpowers covariance matrix, the lensing linear corrections, and the foreground-bias template that can be marginalized over. The appropriate dataset files for running CMB lensing-only and CMB lensing + external data are provided as well. A simple README file provides details on how to install and run the Cobaya likelihood.

If you have any questions regarding the use of this likelihood, please contact Federico Bianchini (fbianc_at_stanford_dot_edu).

Additional Details:

• Information on this page was taken from this SPT site