Organisation
A Steering Committee (SC) including the two PIs (G.W. Pratt – CEA Saclay France-, S. Ettori -INAF, OAS Bologna Italy) and 10 other co-Is promotes and coordinates CHEX-MATE activities. The collaboration now numbers more 60 scientists worldwide. Activities are organised into Working Groups, headed primarily by SC members, covering the various observational wavelength domains (X-ray, lensing, SZE, radio), and numerical simulations. The scientific goals are organised into Key Projects. The collaboration’s first paper, describing the organisation and goals of the project, was published at the end of 2021 (CHEX-MATE collaboration, 2021).
Since then, much progress has been made on assembling and analysing the multi-wavelength data set, including:
- development of fully-optimised pipelines for the processing and analysis of all available XMM-Newton and Chandra X-ray observations;
- extraction and analysis of the Planck multi-frequency maps, and reconstruction of the pressure profile from the SZE data;
- accumulation of archive imaging datasets and proposals for new observations; tests and development of the weak lensing pipelines, which are now ready to be applied to the newly- acquired data sets;
- extensive use of numerical simulations to test observational analysis hypotheses (e.g. spherical symmetry).
Meetings
The first meeting is to take place in Q3-Q4 2022. This meeting, in a round-table setting, would be used to take stock of the available data; determine critical missing data sets; identify interesting sub-samples and pilot projects for multi- wavelength analysis; establish what supporting theoretical data is needed from numerical simulations. The aim at the end of this meeting would be to have an action plan for the first wave of papers from a multi-wavelength analysis of CHEX-MATE data, including action items, paper leaders, etc.