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Clone wikicosmosis / default_modules / BOSS_1303.4486
BOSS module
Compute the likelihood of supplied fsigma8(z=0.57), H(z=0.57), D_a(z=0.57), omegamh2, bsigma8(z=0.57)
Name: BOSS
File: cosmosis-standard-library/likelihood/boss/boss_rsd.py
Version: 1303.4486
Author(s):
- SDSS-III BOSS Team
URL: http://www.sdss3.org
Cite:
Rules:
Assumptions:
- SDSS-III CMASS DR9 dataset
- When using mode = 1 CAMB must be run to output distance parameters and sigma8
- The transfer function must be scale-independent to use this simple formulation: no MG, massive nu, for example.
Explanation
This module calculates the likelihood using the CMASS only results from
Chuang et al. 2013 for fsigma8(z=0.57), H(z=0.57), D_a(z=0.57), omegamh2, bsigma8(z=0.57).
There are two modes: mode=0 give the fsigma8(z=0.57) likelihood only; mode=1 give the more general BOSS likelihood.
##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 |
|---|---|
| mode | Integer, mode=0 for a fsigma8 likelihood only. mode=1 uses the full results(default = 0) |
| feedback | Integer,amount of output to print. 0 for no feedback. 1 for basic (default = 0) |
| mean | Real, fsigma8 (default = 0.428) |
| sigma | Real, sigma (default = 0.066) |
| redshift | Real, redshift (default = 0.57) |
##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 |
|---|---|---|
| growth_parameters | d_z | 1D real array, linear growth factor D |
| f_z | 1D real array, linear growth rate f | |
| z | 1D real array, redshift of samples | |
| cosmological_parameters | omega_m | real, baryon + cdm density fraction today |
| sigma_8 | real, amplitude of linear matter power at 8/h Mpc at z=0 | |
| bias | real, galaxy bias | |
| h0 | real, hubble parameter H0/(100 km/s/Mpc) | |
| distances | z | 1D real array, redshifts of samples |
| d_a | 1D real array, angular diameter distance in Mpc | |
| h | 1D real array, hubble parameter with in units of Mpc |
##Outputs
These parameters and data are computed as outputs from the module
| Section | Parameter | Description |
|---|---|---|
| likelihoods | BOSS_LIKE | real, likelihood of supplied fsigma8(z=0.57), H(z=0.57), D_a(z=0.57), omegamh2, bsigma8(z=0.57) |
Updated