Atacama Cosmology Telescope (ACT)

Product Name
ACT 3-year Lensing Likelihood


This is the ACT lensing likelihood routine from Das et al 2013, written in Fortran 90.

A single tarball is supplied, containing the lensing likelihood and data for ACT. It is a simple chisq routine that takes in a theoretical deflection spectrum, and compares it to the ACT data file in the /data directory. To use it, you should edit the Makefile for your fortran compiler; Then

make #compiles the likelihood

./test #runs a test spectrum and returns the chisq

The likelihood is computed in ACTlens_3yr_like.f90. The array 'clpp' should be l2C_ldd/4 (equivalent to Ckk), as shown in Figure 2 of Das et al 2011 and Figure 1 of Sherwin et al 2011 (astro-ph/1105.0419). See the readme.txt for more details.

Please reference Das et al 2013 if you use this code.

Additional Details

  • "The Atacama Cosmology Telescope: temperature and gravitational lensing power spectrum measurements from three seasons of data", S. Das, et al. (2013)
  • "The Atacama Cosmology Telescope: cosmological parameters from three seasons of data", J. Sievers, et al. (2013)

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