SPT3G-montepython

Contributors: Anton Chudaykin

We present the complete SPT-3G likelihood for the MCMC sampler Montepython. It includes the measurements of TE/EE power spectrum of the cosmic microwave background (CMB) using 95, 150, and 220 GHz data from the 1500 Square Degrees SPT-3G survey. Our code incorporates astrophysical foregrounds, instrumental calibration, beam uncertainty, bandpower window functions and covariance matrixes.

The original likelihood written for different MCMC sampler CosmoMC was presented in the following paper

• Measurements of the E-mode polarization and temperature-E-mode correlation of the CMB from SPT-3G 2018 data

Our likelihood was tested with Montepython v3.4 and introduced in the paper

• Exploring LCDM extensions with SPT-3G and Planck data: 4σ evidence for neutrino masses, full resolution of the Hubble crisis by dark energy with phantom crossing, and all that

The repo includes:

• Measurements of the E-mode polarization angular power spectrum (EE) and temperature-E-mode cross power spectrum (TE) over the multipole range 300<l<3000 in three frequency bands centered at 95, 150, and 220 GHz.

Using the code

You can use SPT3G-likelihood freely, provided that in your publications you cite arXiv:2203.03666.