SPTpol Data Products

2025 Maps, Auxiliary Data Products and Likelihood Code

This page provides data products associated with the SPTpol measurement of the CMB EE and TE polarization power spectra over 500 square degrees described in Chou et al. (2025). The power spectra are presented over the multipole range 50 < ell <= 8000 and can be used to constrain cosmological models using the likelihood package provided below.

If you have any questions regarding this data set or its use, please contact Jody T-L Chou (tlchou_at_uchicago_dot_edu).

Maps

We provide FITS files containing 95 GHz and 150 GHz maps of the SPTpol 500d field from the full 2013-2016 season observations. Auxiliary files, instrument beams, and spectral bandpass functions are necessary for interpreting the maps.

Temperature and linear-Stokes-parameter (Q/U) maps of the SPTpol 500d field in the 95 GHz and 150 GHz bands, presented in the oblique Lambert equal-area azimuthal projection. Two sets of T/Q/U maps are available for each band, corresponding to the "low-multipole" and "high-multiopole" parts of the analysis in Chou et al. (2025). The low-multipole, or low-resolution, maps are at 3-arcminute resolution and have been minimally high-pass filtered, while the high-multipole or high-resolution maps are at 0.5-arcminute resolution and have been high-pass filtered at roughly l = 300. For details see Chou et al. (2025).

Auxiliary Data Products

We provide FITS files containing auxiliary information needed to interpret the of the SPTpol 500d field. Included are pixel weight maps, apodization+point-source masks applied in power spectrum estimation, 1d multipole-space instrument beams (point-spread functions), 1d multipole-space filter transfer functions, and instrument bandpasses (response as a function of frequency of incoming radiation).

Likelihood Code

We provide files in a compressed zip file that can be plugged into the Cobaya framework. Prerequisites for this code are an installation of Cobaya, plus CAMB and/or the CosmoPower emulators here.

IMPORTANT: This SPTpol likelihood should not be combined with SPT-3G likelihoods due to the sky overlap (the SPTpol 500d field lies within the SPT-3G Main field).

If you have any questions regarding the use of this likelihood, please contact Jody T-L Chou (tlchou_at_uchicago_dot_edu). v1.0: July 24, 2025 - Initial version released with accepted paper.