X-ray properties of eFEDS clusters and groups

We provide the X-ray observables in the core- included <R500 and core-excised 0.15*R500-R500 apertures for 542 galaxy clusters and groups detected in the eFEDS field. Additionally, we present our best-fit results for the normalization, slope, redshift evolution, and intrinsic scatter parameters of the X-ray scaling relations between Lx-T, Lx- Mgas, Lx-Yx, Lbol-T, Lbol-Mgas, Lbol-Yx, and Mgas-T. We find that the best-fit slopes significantly deviate from the self-similar model at a >4sigma confidence level, but our results are nevertheless in good agreement with the simulations including non-gravitational physics, and the recent results that take into account selection effects.

The strong deviations we find from the self-similar scenario indicate that the non-gravitational effects play an important role in shaping the observed physical state of clusters. This work extends the scaling relations to the low-mass, low-luminosity galaxy cluster and group regime using eFEDS observations, demonstrating the ability of eROSITA to measure emission from the intracluster medium out to R500 with survey-depth exposures and constrain the scaling relations in a wide mass-luminosity-redshift range.