Class dealing nonthermal sterile species(fractional relativistic and rest nonreltivistic)

[ravi398]

Hi, I am dealing with nonthermal sterile species in class. Depending on distribution at some earlier redshift fraction of it might be relativistic(radiation kind behaviour) and some might be nonrealtivistic (matter kind behaviour). I wanted to know how class deal with it..

Does this fact has already been taken care in current ncdm module of class ? any suggestions.

Thanks in advance Regards Ravi Kumar sharma