[FLASH-USERS] Dark Matter Density

[M.A. Latife]

Hi
Dear All,
I am including particles in my simulations to include the effect of dark 
matter. In user guide it is mentioned that pden is mesh mapped particle 
density but it seems me that it is sum of particle density + gas 
density. Is it true?
My second question is ,I want to create  density profile  like 
rho=rho0*Radius^(-alpha)  for  dark matter . To create a dark matter 
density profile   should i initialize  more particles where i want to 
create profile (i mean changing Particle  positions file )or FLASH will 
do it by putting profile of dark matter in simulation _init Block.f90  
as it works for gas.
Thanks in advance
Best regards
Latif