Adding ACT data to cosmomc

Use of Cobaya. camb, CLASS, cosmomc, compilers, etc.
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Tristan L Smith
Posts: 25
Joined: November 14 2005
Affiliation: Swarthmore
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Adding ACT data to cosmomc

Post by Tristan L Smith » March 19 2011

I am trying to add the ACT likelihood code to cosmomc (with WMAP7) and I am having some run-time issues. I was wondering if anyone knew of a place to find explicit instructions on how to incorporate the likelihood into cosmomc.

Thanks!

Zhen Hou
Posts: 6
Joined: March 02 2009
Affiliation: KICP, University of Chicago

Adding ACT data to cosmomc

Post by Zhen Hou » March 25 2011

Just similar to the way that cosmomc incorporating WMAP likelihood tools.

You will find the function MAPLnLike in "cmbdata.F90" and you could write a similar function called "ACTLnLike" using the subroutine "act_likelihood_compute" in ACT likelihood software to get the ACT likelihood.

Then you could add a line like "tot(i) = MAPLnLike(szcl) + ACTLnLike(cl,...)" in function "CMBLnLike" in "cmbdata.F90" to get the combined likelihood.

You would also edit the Makefile to add the ACT tools during compiling, and it is easy if you take a look at how WMAP tools are getting involved.

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