Fig. 2
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Examples of special cluster morphologies. DBSCAN clusters are shown in different colors with black crosses marking centroids. 4FGL- DR4 sources with TS > 25 and TS < 25 are shown as red and blue circles, respectively. Panel a: fragmented extended source producing satellite clusters. Panel b: single DBSCAN cluster encompassing two nearby 4FGL-DR4 sources, a typical bridged case.
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