Wiki
Clone wikicosmosis / default_modules / planck2015_simple_2
planck2015_simple module
Simplified Likelihood function of CMB from Planck 2015 TT TE EE data
Name: planck2015_simple
File: cosmosis-standard-library/likelihood/planck2015_simple/planck2015_simple.py
Version: 2
Author(s):
- The Planck Collaboration (Data)
- CosmoSIS Team (Code)
URL:
Cite:
Rules:
- Please cite the appropriate Planck paper
Assumptions:
- Highly accurate CMB calculations are required
- In the high-ell regime models for the foregrounds and secondary anisotropies are assumed
Explanation
See the Planck2015 module for general information about Planck.
This module provides a greatly simplified form of the Planck likelihood supplied
in plik_lite_v18_TT.clik, which should not be used for high-precision cosmology
but should be alright for e.g. Fisher matrix forecasting.
It turns the data in that file into just a Gaussian likelihood, ignoring the nuisance
parameter.
##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 |
|---|---|
| data_file | (String; default=data.txt) Text file containing ell in col 1 and TT TE and EE in col 2 (no ell(ell+1) factor) |
| covmat_file | (String; default=covmat.txt) Numpy format file containing covariance matrix |
##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 |
|---|---|---|
| cmb_cl | ell | Integer vector of angular frequencies for CMB spectra |
| tt | Double vector of temperature spectra in l*(l+1) C_ell / uK^2 (if using TT data) | |
| ee | Double vector of E-mode polarization spectra in l*(l+1) C_ell / uK^2 (if using pol data) | |
| te | Double vector of cross spectra in l*(l+1) C_ell / uK^2 (if using pol data) |
##Outputs
These parameters and data are computed as outputs from the module
| Section | Parameter | Description |
|---|---|---|
| likelihoods | planck2014_simple_like | (real; only if data_1 specified) Log-likelihood from first file |
Updated