TL;DR
This paper provides a comprehensive review of cluster-galaxy weak lensing, covering theoretical foundations, recent observational and theoretical findings, and its applications in cosmology and astrophysics.
Contribution
It offers a self-contained pedagogical overview of weak lensing in galaxy clusters, highlighting recent advances and key results in the field.
Findings
Insights into cluster mass profiles and concentration--mass relation
Discussion on splashback radius and its significance
Implications for cluster cosmology from mass calibration efforts
Abstract
Weak gravitational lensing of background galaxies provides a direct probe of the projected matter distribution in and around galaxy clusters. Here we present a self-contained pedagogical review of cluster--galaxy weak lensing, covering a range of topics relevant to its cosmological and astrophysical applications. We begin by reviewing the theoretical foundations of gravitational lensing from first principles, with special attention to the basics and advanced techniques of weak gravitational lensing. We summarize and discuss key findings from recent cluster--galaxy weak-lensing studies on both observational and theoretical grounds, with a focus on cluster mass profiles, the concentration--mass relation, the splashback radius, and implications from extensive mass calibration efforts for cluster cosmology.
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