Strong gravitational lensing constraints on holographic dark energy

TL;DR

This study uses strong gravitational lensing data, combined with other cosmological observations, to improve constraints on holographic dark energy and similar models, demonstrating SGL's utility in cosmological parameter estimation.

Contribution

It demonstrates that combining SGL with CBS data enhances constraints on dark energy models, highlighting SGL's role in cosmological parameter refinement.

Findings

SGL alone struggles to constrain model parameters effectively.

Combining SGL with CBS data improves parameter estimation accuracy.

SGL is a valuable addition for tightening dark energy model constraints.

Abstract

Strong gravitational lensing (SGL) has provided an important tool for probing galaxies and cosmology. In this paper, we use the SGL data to constrain the holographic dark energy model, as well as models that have the same parameter number, such as the $w$CDM and Ricci dark energy models. We find that only using SGL is difficult to effectively constrain the model parameters. However, when the SGL data are combined with CBS (CMB+BAO+SN) data, the reasonable estimations can be given and the constraint precision is improved to a certain extent, relative to the case of CBS only. Therefore, SGL is an useful way to tighten constraints on model parameters.