The interaction between the supermassive black hole at the center of the Milky Way, Sagittarius A*, and its accretion disk occasionally produces high-energy flares seen in X-ray, infrared, and radio. One proposed mechanism that produces flares is the formation of compact, bright regions that appear within the accretion disk and close to the event horizon. Understanding these flares provides a window into accretion processes. An international research team including Maciek Wielgus from MPIfR shows the first 3D reconstruction of an emission flare, showing compact, bright regions at a distance of roughly six times the event horizon and suggesting a clockwise rotation in a low-inclination orbital plane, consistent with prior studies by GRAVITY and EHT (CalTech News; Nature Astronomy, April 23, 2024).
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