Riess21¶
Likelihood of hubble parameter H0 from Riess et al supernova sample
File |
likelihood/riess21/riess21.py |
Attribution |
Riess et al (measurement) |
CosmoSIS team (code) |
|
URL |
|
Citations |
Riess et al, ApJLett, 908, 1 |
This small module was written for CosmoSIS.
Supernova type IA measurements are a standard(izable) candle that can be used to probe the relation between luminosity distance and redshift. At low redshifts this directly probes the Hubble parameter, H0.
The Riess et al 1% solution measurement of H0 is used in this module.
Assumptions¶
FRW cosmological model
Riess et al data set
Setup Parameters¶
Name |
Type |
Default |
Description |
|---|---|---|---|
mean |
real |
0.732 |
Replace the standard value measurement H0 = 0.732 with a custom one for simulations |
sigma |
real |
0.013 |
Replace the standard value error on H0 of 0.013 with a custom one |
Input values¶
Section |
Name |
Type |
Default |
Description |
|---|---|---|---|---|
cosmological_parameters |
h0 |
real |
Hubble parameter H0/(100 km/s/Mpc) |
Output values¶
Section |
Name |
Type |
Description |
|---|---|---|---|
likelihoods |
RIESS21_LIKE |
real |
Gaussian likelihood value of supplied parameters |