Halo Mass Function ParametersΒΆ
The halo mass function is at the core of many calculations related to the high-z universe. ARES uses hmf, a halo mass function calculator written by Stephen Murray.
hmf_model
Which fit to the halo mass function should be used?
Options:
'PS'
: Press & Schecter (1974)'ST'
: Sheth & Tormen (1999)
Default:
'PS'
Note
You can actually supply any of the options allowed by the hmf code here (for the parameter
mf_model
). Just be aware that not every fit to the halo mass function in the literature is meant to work at high redshifts!hmf_table
Path to a halo mass function lookup table.
Default:
None
hmf_analytic
Compute collapsed fraction, \(f_{\text{coll}}\), analytically? Only possible if
fitting_function='PS'
. Useful for testing numerical integration of the mass function.Default:
False
hmf_load
Search
$ARES/input/hmf
for halo mass function lookup table?Default:
True
hmf_logMmin
Base-10 logarithm of the minimum halo mass to consider.
Default: 4
hmf_logMmax
Base-10 logarithm of the maximum halo mass to consider.
Default: 16
hmf_dlogM
Base-10 logarithm of the mass resolution in halo mass function lookup table.
Default: 0.05
hmf_zmin
Minimum redshift in lookup table.
Default: 4
hmf_zmax
Maximum redshift in lookup table.
Default: 80
hmf_dz
Redshift resolution in lookup table.
Default: 0.05