We present the results of an X-ray follow-up campaign targeting 10 Weak Lensing (WL) selected galaxy clusters from a Subaru WL survey. Eight clusters were studied with dedicated Chandra pointings, whereas archival X-ray data were used for the remaining two clusters. The WL clusters appear to fit the same scaling relation between X-ray luminosity and temperature as X-ray selected clusters. However, when we consider the luminosity-mass relation, the WL selected clusters appear underluminous by a factor 3.9±0.9 (or, alternatively, more massive by 2.9±0.2), compared to X-ray selected clusters. Only by considering various observational effects that could potentially bias WL masses, can this difference be reconciled. We used X-ray imaging data to quantify the dynamical state of the clusters and found that one of the clusters appears dynamically relaxed, and two of the clusters host a cool core, consistent with Sunyaev-Zel'dovich effect selected clusters. Our results suggest that regular, cool core clusters may be over-represented in X-ray selected samples.
@article{arxiv.1402.4484,
title = {The X-ray Properties of Weak Lensing Selected Galaxy Clusters},
author = {P. A. Giles and B. J. Maughan and T. Hamana and S. Miyazaki and M. Birkinshaw and R. S. Ellis and R. Massey},
journal= {arXiv preprint arXiv:1402.4484},
year = {2015}
}
Comments
19 pages, 18 figures; submitted to MNRAS, comments welcome