Constraining f(R) models with cosmic chronometers and the H ii galaxy Hubble diagram

Joseph Sultana, Manoj K. Yennapureddy, Fulvio Melia, Demosthenes Kazanas

Research output: Contribution to journalArticlepeer-review

Abstract

We consider several well-known f(R) cosmological models and constrain their parameters, namely the deviation parameter b and the cosmological parameters Ωm and h. We first obtain analytical approximations for the Hubble rate H(z) and the luminosity distance dL(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 model-independent 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.

Original languageEnglish (US)
Pages (from-to)5827-5839
Number of pages13
JournalMonthly Notices of the Royal Astronomical Society
Volume514
Issue number4
DOIs
StatePublished - Aug 1 2022

Keywords

  • cosmological parameters
  • cosmology: theory
  • dark energy

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Fingerprint

Dive into the research topics of 'Constraining f(R) models with cosmic chronometers and the H ii galaxy Hubble diagram'. Together they form a unique fingerprint.

Cite this