Numerical Facts about the Milky way's halo

Join the discussion
Registration is free. Start your own thread to ask a follow-up.
2 replies · 4K views
majormuss
Messages
124
Reaction score
4
I am trying to find the density, scale radius and normal radius of the milky way's halo. But these things are pretty hard to find. I want to find them so I can input them into the NFW profile:
760e366561387be89639a1aab92a56b0.png
 
Astronomy news on Phys.org
This may be a nitpick (depending on what you are trying to achieve) but the scale density is not a "numerical fact" because it is degenerate with the scale radius when you express the NFW profile as you have done. For any set of data there is a range of pairs of values rho_0 and R_s that all fit well enough, so you can't say any particular value of rho_0 is a "fact". Its often better with these halo profiles to express them in terms of v_max instead of rho_0.