boss_dr12_lrg_reanalyze¶
Compute the likelihood of the supplied expansion and growth history against BOSS DR12 data as reanalyzed by eBOSS DR16
File |
likelihood/eboss_dr16/boss_dr12/boss_dr12_lrg_reanalyze.py |
URL |
https://svn.sdss.org/public/data/eboss/DR16cosmo/tags/v1_0_0/likelihoods/ |
Citations |
This module is adapted from boss_dr12.py module in boss_dr12, to read the boss dr12 likelihood data as released by eBOSS DR 16. The data files are from the BAO-only and BAO-plus (which the recomended one) directories. One notable difference is that the txt files only contain boss dr12 measurements for the two lowest redshift bins. This module gives a likelihood of the comoving angular diameter distance D_m, the Hubble parameter H(z) and f*sigma_8. It uses the sound horizon at last-scatter rs_zdrag. A correlated Gaussian likelihood is then returned.
Assumptions¶
Setup Parameters¶
Name |
Type |
Default |
Description |
|---|---|---|---|
mode |
int |
0 |
0 for BAO only, 1 for BAO+FS measurements |
data_file |
str |
sdss_DR12_LRG_BAO_DMDH.txt or sdss_DR12_LRG_FSBAO_DMDHfs8.txt |
path to file with measured data values in |
cov_file |
str |
sdss_DR12_LRG_BAO_DMDH_covtot.txt or sdss_DR12_LRG_FSBAO_DMDHfs8_covtot.txt |
path to covariance matrix file |
rs_fiducial |
real |
147.78 |
Fiducial value of sound horizon at last scattering used in making data |
verbose |
bool |
False |
Whether to print extra output |
Input values¶
Section |
Name |
Type |
Default |
Description |
|---|---|---|---|---|
growth_parameters |
d_z |
real 1d |
Linear growth factor D(z) |
|
f_z |
real 1d |
Linear growth rate f(z) |
||
z |
real 1d |
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 |
||
h0 |
real |
Hubble parameter H0/(100 km/s/Mpc) |
||
distances |
z |
real 1d |
Redshifts of samples |
|
d_a |
real 1d |
Angular diameter distance in Mpc |
||
h |
real 1d |
Hubble parameter with in units of Mpc |
Output values¶
Section |
Name |
Type |
Description |
|---|---|---|---|
likelihoods |
boss12_lrg_like |
real |
Likelihood of supplied expansion history |