ia_z_powerlap module

Name: ia_z_powerlap

File: cosmosis-standard-library/intrinsic_alignments/z_powerlaw/ia_z_powerlaw.py

Version: 2.0

Author(s):

• CosmoSIS team
• Niall Maccrann

URL:

Cite:

Rules:

Assumptions:

• Modify the intrinsic alignment power spectra to have a power-law dependence in (1+z)

Explanation

Basic models of intrinsic alignments assume a specific simple evolution with redshift.
This module takes an existing model of the IA power spectra and modifies them by giving
them additional evolution in z.

Specifically, it takes P_II and P_GI (e.g. as calculated by the la_model module)
and modifies them to:

P_II(k,z) -> (1+z)^alpha P_II(k,z)
P_GI(k,z) -> (1+z)^alpha P_GI(k,z)

##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.

##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.

##Outputs

These parameters and data are computed as outputs from the module