SRG/ART-XC all-sky X-ray survey: Catalog of sources detected during the first year

The Early Data Release of eROSITA and Mikhail Pavlinsky ART-XC on the SRG mission

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Fig. 1

Example of a detection of a faint source using the Poisson optimal filter, described in Sect. 2.3. Left: raw photon image in the 4–12 keV energy band. Right: convolution with the optimal filter. The size of the images is approximately 20’ x 20’.

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