31 Jul
2019
31 Jul
'19
5:09 p.m.
Folks, I ran both HOP and Rockstar halo finders on the same ART simulations, and the mass functions match very well (attached hmf_m.pdf file). However, when I compare virial radii (attached hmf_r.pdf file), they don't match. Even if I try rescaling the Rockstar virial radius by 1.5, the match is much worse than for mass functions. How are the 'virial_radius' fields defined for both halo finders? This is a z=7 simulations, so all mass definitions are the same, Mvir = M200m = M200c. I also attach the script to plot virial radii if you want to check it, although it is trivial. Many thanks (as usual), Nick