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Running WL alone in CosmoMC
 
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Shouvik Roychoudhury



Joined: 14 Aug 2016
Posts: 20
Affiliation: Harish-Chandra Research Institute

PostPosted: June 25 2017  Reply with quote

Hi,

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: https://arxiv.org/pdf/1303.1808.pdf

I am using the following .ini file:

Code:

DEFAULT(batch2/WLonly.ini)
DEFAULT(batch2/common.ini)
MPI_Max_R_ProposeUpdate = 30
propose_matrix= planck_covmats/base_WLonly.covmat
root_dir = chains/base_wl/
file_root=base_wl
action = 0
num_threads = 0
start_at_bestfit =F
feedback=1
use_fast_slow = T
checkpoint = T
indep_sample=10
get_sigma8=T


What might I be doing wrong?
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Antony Lewis



Joined: 23 Sep 2004
Posts: 1276
Affiliation: University of Sussex

PostPosted: June 26 2017  Reply with quote

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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