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The Milky Way’s Black Hole • Our visible light view of the galactic center is obscured. • Sagittarius A. Radio Image Of Galactic Center • Radio source Sagittarius A marks the location of the radio energy being emitted by the black hole. X Ray Image Of The Galactic Center • Lobes of hot gas are heated to millions of degrees by the radiation spewing from the black hole. • The sheer number Detail of X-ray sources near the supermassive black hole suggests that many of the stars in this region are binary star systems with black hole/ neutron star companions. • Radio Moving In… image, then x- ray, and then infrared. Infrared Image • Note the scale. This is area at the exact center. • Sagittarius A* located. S0-2’s Orbit • Only possibility is a ~4 million solar mass black hole. Other Stars Nearby • SO-16, in particular, shows the presence of a ~4 million solar mass black hole. • Animation.
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