Atacama Cosmology Telescope (ACT)
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.