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Halofit_Takahashi module
Compute non-linear matter power spectrum
Name: Halofit_Takahashi
File: cosmosis-standard-library/boltzmann/halofit_takahashi/halofit_interface.so
Version: Camb-Nov-13
Author(s):
- Antony Lewis
- Simeon Bird
URL: http://camb.info
Cite:
Rules:
- Please abide by the conditions set out in the CAMB license if you use this module http://camb.info/CAMBsubmit.html
Assumptions:
- Fitting formula from Takahashi et al applies only to LCDM
Explanation
Halofit is a fitting function based on simulations which models
the non-linear matter-power spectrum by scaling the linear one.
This Takahashi et al version improves over previous versions.
##Parameters
These parameters can be set in the module's section in the ini parameter file.
If no default is specified then the parameter is required.
Parameter | Description |
---|---|
kmin | real, minimum k in Mpc/h to generate values for (default 1e-4) |
kmax | real, maximum k in Mpc/h to generate values for (default 100.0 |
nk | integer, number of log-spaced k values to sample (default 200) |
##Inputs
These parameters and data are inputs to the module, either supplied as parameters by the sampler or computed by some previous module. They are loaded from the data block.
Section | Parameter | Description |
---|---|---|
cosmological_parameters | omega_m | real, Total matter density fraction today |
omega_lambda | real, Dark energy density fraction today | |
omega_nu | real, Neutrino density fraction today (default 0.0) | |
w | real, Dark energy equation of state (default -1) | |
matter_power_lin | k_h | real 1D array, sample values of linear spectrum in Mpc/h |
z | real 1D array, redshift of linear spectrum samples | |
P_k | real 2D array, linear spectrum in (Mpc/h)^{-3} |
##Outputs
These parameters and data are computed as outputs from the module
Section | Parameter | Description |
---|---|---|
matter_power_nl | k_h | real 1D array, sample values of nonlinear spectrum in Mpc/h |
z | real 1D array, redshift of nonlinear spectrum samples | |
P_k | real 2D array, nonlinear spectrum in (Mpc/h)^{-3} |
Updated