Orateur
Description
The Cluster HEritage project with XMM-Newton - Mass Assembly and Thermodynamics at the Endpoint of structure formation (CHEX-MATE) is a multi-year Heritage program focused on studying 118 galaxy clusters, identified as the ultimate products of structure formation. This extensive analysis, encompassing over 6 Msec of XMM-Newton data, recently concluded with the application of a physically-motivated particle background model to the full dataset. This model was developed through the comprehensive study of more than 20 years of archival XMM-observations. My presentation will delve into the critical lessons learned regarding XMM-Newton's particle background and its application to astrophysical spectra within a Bayesian framework, utilizing XSPEC MCMC spectral fitting.
