Speaker
Description
In this talk I will present the cross-match of Dark Energy Survey (DES) redMaPPer clusters with the eROSITA All-Sky Survey (eRASS), which offers an unprecedented ~4000 deg$^2$ area of overlap between the DES and eRASS survey footprints. Previous efforts of cross-matching DES RM clusters with various X-ray archives, e.g., the XMM Cluster Sample, resulted in a few hundred clusters detected in non-contiguous survey overlaps. With the public release of the first eRASS data, we detail the construction of the cross-matched sample delivering ~1700 RM clusters with a corresponding eRASS confirmed cluster detection. Using this sample, we will investigate initial forms of the mis-centering distribution and scaling relations of this sample, with particular emphasis on lower mass galaxy group scale systems. Finally, we outline how these results can impact our assumptions in preparation for the cluster samples constructed from the Legacy Survey of Space and Time.
