# PSZ2LenS. Weak lensing analysis of the Planck clusters in the CFHTLenS and in the RCSLenS

## TL;DR

This study performs a weak lensing analysis of Planck-detected galaxy clusters in CFHTLenS and RCSLenS, confirming mass biases and consistency with cosmological models, and providing insights into cluster mass estimates.

## Contribution

It presents the first weak lensing analysis of the PSZ2LenS sample, revealing biases in Planck mass estimates and confirming the consistency of cluster properties with the Lambda CDM model.

## Key findings

- Stacked lensing signal detected at 14 sigma significance.
- Planck masses are biased low by approximately 27%.
- Cluster mass concentration relations agree with theoretical predictions.

## Abstract

The possibly unbiased selection process in surveys of the Sunyaev Zel'dovich effect can unveil new populations of galaxy clusters. We performed a weak lensing analysis of the PSZ2LenS sample, i.e. the PSZ2 galaxy clusters detected by the Planck mission in the sky portion covered by the lensing surveys CFHTLenS and RCSLenS. PSZ2LenS consists of 35 clusters and it is a statistically complete and homogeneous subsample of the PSZ2 catalogue. The Planck selected clusters appear to be unbiased tracers of the massive end of the cosmological haloes. The mass concentration relation of the sample is in excellent agreement with predictions from the Lambda cold dark matter model. The stacked lensing signal is detected at 14 sigma significance over the radial range 0.1<R<3.2 Mpc/h, and is well described by the cuspy dark halo models predicted by numerical simulations. We confirmed that Planck estimated masses are biased low by b_SZ= 27+-11(stat)+-8(sys) per cent with respect to weak lensing masses. The bias is higher for the cosmological subsample, b_SZ= 40+-14+-(stat)+-8(sys) per cent.