CAMB: transfer function for gamma at z~100
Posted: January 01 2016
Pardon me if this has been addressed before. I'm using January 2015 version of CAMB, and wanted to use the 4th column (photon density perturbation) of transfer function outputs at various redshifts. I set
transfer_kmax = 20
transfer_k_per_logint = 100
in the parameter file.
With redshifts selected as in the figure file(1000, 203, 101), the transfer function has discontinuous points at z=203 and 101 which looks suspicious. I ran it both with intel-fortran compiled and gfortran-compiled ones with the same result.
As a test I went back to September 2013 version, and the same outputs for the same redshifts have null values for the transfer function at k>~0.02, so it used to be worse.
Is it a glitch from error accumulation of the ODE solver used?
[/b]
transfer_kmax = 20
transfer_k_per_logint = 100
in the parameter file.
With redshifts selected as in the figure file(1000, 203, 101), the transfer function has discontinuous points at z=203 and 101 which looks suspicious. I ran it both with intel-fortran compiled and gfortran-compiled ones with the same result.
As a test I went back to September 2013 version, and the same outputs for the same redshifts have null values for the transfer function at k>~0.02, so it used to be worse.
Is it a glitch from error accumulation of the ODE solver used?
[/b]