Image Details
Caption: Figure A4.
Chandra observations of A402. Upper panels: large-scale X-ray emission, which exhibits a clearly asymmetric morphology indicative of a recent cluster-scale merger. Middle panels: zoom-in of the X-ray peak, which is significantly offset from the galaxy center and the IR-bright point source. We interpret this as a sloshing core, rather than a point source, suggestive of a recent merger. Bottom panel: zoom-in of a nearby point source, to emphasize the excellent astrometry of these data, indicating that the offset above is not an astrometry error.
© 2026. The Author(s). Published by the American Astronomical Society.