Fig. 14
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Luminosity 0.2-2.3 keV vs. redshift for all eRO-ExTra sources with reliable spectroscopic (red) or photometric (violet) redshifts. The black dashed line shows the limit where a source would satisfy the eRO-ExTra selection criteria (detection likelihood, amplitude and significance cuts) at becl = 30°. A star highlights a known luminous TDE candidate eRASSt J234403.1-352640. The eRASS1 (gray, Boller et al. 2024) and XMM-COSMOS (orange, Lanzuisi et al. 2014) variability samples are shown for comparison.
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