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CosmoMC: sigma8 as a fitted parameter

Posted: July 08 2017
by Graeme Addison
Is there a straightforward way to run CosmoMC with sigma8 as a fitted, rather than derived, parameter? For example if one wanted to look at a fit to only weak lensing or redshift-space distortion measurements without having to fit As and ns.

Re: CosmoMC: sigma8 as a fitted parameter

Posted: July 08 2017
by Antony Lewis
it's not implemented currently, but I think it could be done with some slightly fiddly work (and might be useful for others if you did it).