James Webb Space Telescope Feed Post

Arxiv: Constraining dark energy cosmologies with spatial curvature using Supernovae JWST forecasting Published: 9/21/2023 8:53:54 PM Updated: 3/13/2024 5:55:26 AM

Paper abstract: Recent cosmological tensions, in particular, to infer the local value of theHubble constant H_0, have developed new independent techniques to constraincosmological parameters in several cosmologies. Moreover, even when theconcordance Cosmological Constant Cold Dark Matter (\LambdaCDM) model hasbeen well constrained with local observables, its physics has shown deviationsfrom a flat background. Therefore, to explore a possible deviation from a flat\LambdaCDM model that could explain the H_0 value in tension with othertechniques, in this paper we study new cosmological constraints in spatialcurvature dark energy models. Additionally, to standard current Supernovae TypeIa (SNIa) catalogs, we extend the empirical distance ladder method through anSNIa sample using the capabilities of the James Webb Space Telescope (JWST) toforecast SNIa up to z ~ 6, with information on the star formation rates athigh redshift. Furthermore, we found that our constraints provide animprovement in the statistics associated with \Omega_{m} when combining SNIaPantheon and SNIa Pantheon+ catalogs with JW forecasting data.