Galaxy cluster strong lensing cosmography. Cosmological constraints from a sample of regular galaxy clusters

@article{Caminha2021GalaxyCS,
  title={Galaxy cluster strong lensing cosmography. Cosmological constraints from a sample of regular galaxy clusters},
  author={Gabriel B. Caminha and Sherry H. Suyu and Claudio Grillo and Piero Rosati},
  journal={Astronomy \& Astrophysics},
  year={2021}
}
Cluster strong lensing cosmography is a promising probe of the background geometry of the Universe and several studies have emerged, thanks to the increased quality of observations using space and ground-based telescopes. For the first time, we use a sample of five cluster strong lenses to measure the values of cosmological parameters and combine them with those from classical probes. In order to assess the degeneracies and the effectiveness of strong-lensing cosmography in constraining the… 

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Improving parametric mass modelling of lensing clusters through a perturbative approach
We present a new method to model the mass distribution of galaxy clusters that combines a parametric and a free-form approach to reconstruct cluster cores with strong lensing constraints. It aims at