Constraining f(R) models with cosmic chronometers and the H II galaxy Hubble diagram
Abstract
We consider several wellknown f(R) cosmological models and constrain their parameters, namely the deviation parameter b and the cosmological parameters Ω_{m} and h. We first obtain analytical approximations for the Hubble rate H(z) and the luminosity distance d_{L}(z) in terms of these parameters, and then test these against the observational expansion rate derived from cosmic chronometers (CCs) and the distance modulus in the H II galaxy Hubble diagram, obtained in a modelindependent way using Gaussian processes. We first optimize the models based solely on the CCs and then repeat this process with a joint analysis using both the CCs and H II galaxies.
 Publication:

Monthly Notices of the Royal Astronomical Society
 Pub Date:
 August 2022
 DOI:
 10.1093/mnras/stac1713
 arXiv:
 arXiv:2206.10761
 Bibcode:
 2022MNRAS.514.5827S
 Keywords:

 cosmological parameters;
 dark energy;
 cosmology: theory;
 Astrophysics  Cosmology and Nongalactic Astrophysics
 EPrint:
 16 pages