English

Constraining dark energy cosmologies with spatial curvature using Supernovae JWST forecasting

Cosmology and Nongalactic Astrophysics 2024-03-14 v2 General Relativity and Quantum Cosmology

Abstract

Recent cosmological tensions, in particular, to infer the local value of the Hubble constant H0H_0, have developed new independent techniques to constrain cosmological parameters in several cosmologies. Moreover, even when the concordance Cosmological Constant Cold Dark Matter (Λ\LambdaCDM) model has been well constrained with local observables, its physics has shown deviations from a flat background. Therefore, to explore a possible deviation from a flat Λ\LambdaCDM model that could explain the H0H_0 value in tension with other techniques, in this paper we study new cosmological constraints in spatial curvature dark energy models. Additionally, to standard current Supernovae Type Ia (SNIa) catalogs, we extend the empirical distance ladder method through an SNIa sample using the capabilities of the James Webb Space Telescope (JWST) to forecast SNIa up to z6z \sim 6, with information on the star formation rates at high redshift. Furthermore, we found that our constraints provide an improvement in the statistics associated with Ωm\Omega_{m} when combining SNIa Pantheon and SNIa Pantheon+ catalogs with JW forecasting data.

Keywords

Cite

@article{arxiv.2309.12292,
  title  = {Constraining dark energy cosmologies with spatial curvature using Supernovae JWST forecasting},
  author = {Pablo M. Maldonado Alonso and Celia Escamilla-Rivera and Rodrigo Sandoval-Orozco},
  journal= {arXiv preprint arXiv:2309.12292},
  year   = {2024}
}

Comments

23 pages, 7 figures and 2 tables. Version accepted in JCAP