des-y3-bao¶
Compute the likelihood of DES Y3 BAO data
File |
likelihood/des-y3-bao/bao_y3_like.py |
Attribution |
DES Collaboration |
URL |
|
Citations |
DES Collaboration, Physical Review D, 2022, Volume 105, Issue 4, article id.043512 |
This module gives a likelihood of the combination d_m / r_s from the DES Y3 data. It interpolates the ratio of that combination to a fiducial value, and then interpolates into a pre-computed chi2 as a function of that ratio.
Assumptions¶
BAO chi2
FLRW metric and standard BAO size
Setup Parameters¶
Name |
Type |
Default |
Description |
|---|---|---|---|
verbose |
bool |
False |
Print extra output |
chi2_dir |
str |
Module directory |
Directory to find data file |
chi2_file |
str |
chi2profile_dvdesy3_cosmoplanck18_covcosmolike.csv |
Name of CSV data file within chi2_dir |
chi2_column |
int |
1 |
Column to read for alpha from the file |
Input values¶
Section |
Name |
Type |
Default |
Description |
|---|---|---|---|---|
distances |
z |
real 1d |
Redshifts of samples |
|
d_m |
real 1d |
Physical angular diameter distance in Mpc |
||
h |
real 1d |
Hubble parameter with in units of Mpc |
||
rz_zdrag |
real |
Sound horizon at last scattering in Mpc |
Output values¶
Section |
Name |
Type |
Description |
|---|---|---|---|
likelihoods |
des_y3_bao_like |
real |
Likelihood of supplied expansion history |