Joined: 24 Feb 2010
|Posted: February 24 2011
|The default downloaded version of COSMOMC constrains neutrino fraction fν rather than neutrino mass mν. Here we need to specify the limits on fν in the params.ini file. I would rather constrain mν rather than fν. So I made the following modifications.
I just reinterpreted fν as mν in params.ini file. So I specified the limits of mν to this parameter (parameter 6).
In SetForH(Params,CMB,H0) (params_CMB.f90 subroutine) I modified the equation for CMB%omnuh2 as follows.
CMB%omnuh2 = CMB%nufrac/93.1. (Ων h2 = mν/93.1)
Here CMB%nufrac = Params(6) is the newly interpreted neutrino mass (previously it was fν) .
Can somebody please tell me that these modifications are enough so that I will get mν in chains other than fν.
Thanks in advance.