Speaker
Description
The Sunyaev-Zeldovich effect provides an observational window to the intracluster medium, which is complementary to X-ray observations, and over the last few years has proved to be a mature technique to efficiently detect galaxy clusters. For instance, the Planck survey has mapped the whole microwave sky, detecting almost 2000 candidate massive clusters up to z~1, performing the first all-sky survey of galaxy clusters 20 years after the RASS. However, X-ray data are still essential to measure in details the properties of the ICM.
I will present preliminary results on the population of massive and high-redshift clusters in the PSZ2 catalogue that we followed-up with Chandra. These observations have allowed us to identify interesting extreme merging systems, candidate cool cores and to study the evolution of the density profiles with respect to Planck-selected samples at lower z and mass.
I will also introduce a population of candidate X-ray underluminous clusters discovered in the Planck catalogue. The analysis of follow-up XMM-Newton observations has allowed us to measure their main ICM properties and to assess that they lie at the boundary of the scatter of known scaling relations.
| Affiliation | IASF-Milano INAF |
|---|---|
| Topic | Hot and diffuse baryons |
