pyccl.halos.concentration.duffy08 module

class pyccl.halos.concentration.duffy08.ConcentrationDuffy08(self, fc_bar=1, *, mass_def='200c')[source]

Bases: Concentration

Concentration-mass relation by Duffy et al. 2008. This parametrization is only valid for S.O. masses with \(\Delta = \Delta_{\rm vir}\), of \(\Delta=200\) times the matter or critical density. By default it will be initialized for \(M_{200c}\).

Parameters:

( (fc_bar) – obj:`float’): an optional constant that multiplies the Duffy. et al. relation to mimic the impact of baryons (default value is set to 1). See Amon+, 2202.07440 and Viola+, 1507.00735 (Eq 32).
mass_def (MassDef or str) – a mass definition object, or a name string.

name = 'Duffy08'