Running WL alone in CosmoMC

Use of Healpix, camb, CLASS, cosmomc, compilers, etc.
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Shouvik Roychoudhury
Posts: 21
Joined: August 14 2016
Affiliation: Harish-Chandra Research Institute

Running WL alone in CosmoMC

Post by Shouvik Roychoudhury » June 25 2017


I am trying to run WL ultra conservative dataset alone with basic ΛCDM model. However I am getting a much broader allowed area in the σ8 vs Ωm plot than in the pink plot in figure 5 of the following paper:

I am using the following .ini file:

Code: Select allp>

MPI_Max_R_ProposeUpdate = 30
propose_matrix= planck_covmats/base_WLonly.covmat
root_dir = chains/base_wl/
action = 0
num_threads = 0
start_at_bestfit =F
use_fast_slow = T
checkpoint = T
What might I be doing wrong?

Antony Lewis
Posts: 1353
Joined: September 23 2004
Affiliation: University of Sussex

Re: Running WL alone in CosmoMC

Post by Antony Lewis » June 26 2017

The batch2 WL data sets have more conservative k cuts, see the 2015 Planck parameter paper for details. The parameter prior ranges may also be different.

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