South Pole Telescope (SPT)

Product Name
2014 EE and TE bandpowers and likelihood



SPTpol 150 GHz EE and TE bandpowers are provided from 2012 observations covering 100 square degrees of sky with arcminute resolution. The bandpowers cover the multipole range 500 < ell <= 5000 in bins of delta-ell = 50 between 501 < ell < 2000, delta_ell = 100 from 2001 < ell <= 2500, and delta_ell = 500 from 2501 < ell <= 5000.

Bandcenters, bandpowers, and bandpower errors for plotting are provided in the text file bandpowers_sptpol_100deg2_EETE_noCal.txt. Each row is one ell-bin. The columns are (1) ell_min, (2) ell_max, (3) ell_center, (4) bandpower for 150x150 in D_ell units of uK^2, and (5) bandpower uncertainty for 150x150 in D_ell units of uK^2.

An alternative form of the bandpowers for plotting with calibration and beam errors included in the uncertainties are provided in the text file bandpowers_sptpol_100deg2_EETE_Cal.txt.

Note that these bandpowers include power from foregrounds, such as point sources, though we do not significantly detect this power. Nevertheless, a Poisson foreground term is included in our likelihood model, the amplitude of which is required to be positive by default but may be adjusted by editing the accompanying SPTpol batch file provided in the likelihood package below.

Likelihood Code

Files are provided in the gzipped tarball sptpol_cosmomc_oct13.tar.gz that can be added to the Oct13 version of CosmoMC to interface with the SPTpol EE and TE bandpowers discussed above. These files include the SPTpol likelihood, SPTpol data (bandpowers, covariance matrix, and bandpower window functions), batch file, an example runscript, and a README with instructions for how to modify a Makefile to compile CosmoMC with the SPTpol likelihood.

Additional Details:

  • Information on this page was taken from this SPT site.
  • Crites et al. (2014), "Measurements of E-Mode Polarization and Temperature-E-Mode Correlation in the Cosmic Microwave Background from 100 Square Degrees of SPTpol Data", arXiv:1411.1042.

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