X-ray and optical images of galaxy clusters observed by eROSITA telescope launched in 2019. (IMAGE)
Caption
Three eFEDS clusters are shown across the panels from left to right. The top (bottom) row shows the X-ray (optical) imaging of the cluster observed by the eROSITA telescope (HSC survey). The cluster name, mass, and the redshift are labeled in the optical imaging on the bottom row. By combining optical and X-ray imaging, we can efficiently search for galaxy clusters and measure their masses at the same time.
Credit
Matthias Klein from Ludwig-Maximilians-Universität, Germany
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