Extended Data Fig. 1: Chandra image during eruption.
From: Quasi-periodic X-ray eruptions years after a nearby tidal disruption event
The image is 8.5 × 8.5 arcmin, with north up and east to the left. Five sources are detected within a few arcminutes of AT2019qiz. Only AT2019qiz shows statistical evidence of variability in the Chandra data (Methods). The PSFs (half-encircled energy width) of Swift/XRT and AstroSat are marked, as is the NICER field of view. None of the sources exhibit a count rate (0.3–1.0 keV) above about 10% of the count rate from AT2019qiz during eruption. Figure 1a shows a zoom-in of the central region.
