Chandra and Sgr A*: 25 Years of Greatness

Chandra was the first observatory to detect X-ray flares from Sagittarius A* (Sgr A*), the Milky Way’s supermassive black hole, and later to characterize its faint quiescent X-ray emission. This ground-breaking X-ray discovery has become a cornerstone for theories of accretion and emission in low-luminosity AGN, growing alongside a rich field of multi-wavelength observations, including from the Event Horizon Telescope and most recently JWST. I will review Sgr A*’s unique X-ray variability, traced out over nearly 25 years of observations from coordinated multi-wavelength campaigns. I will compare these detailed studies of Sgr A* to equally impressive multi-wavelength observations of M87* and briefly explore how we can continue to push the frontiers of black hole research with existing and next-generation observatories.