Extremely strong observational evidence has recently been found for the presence of black holes orbiting a few relatively normal stars in our Milky Way Galaxy and also at the centers of some galaxies. The former generally have masses of 4–16 times the mass of the sun, whereas the latter are “supermassive black holes” with millions to billions of solar masses. The evidence for a supermassive black hole in the center of our galaxy is especially strong.
D. O. Richstone, Edward A. Ajhar, R. Bender, Geoffrey C. Bower, Alan Dressler, S. M. Faber, Alexei V Filippenko, Karl Gebhardt, R. Green, Luis C. Ho, John Kormendy, Tod R. Lauer, John Magorrian, Scott Tremaine
D. O. Richstone, Edward A. Ajhar, R. Bender, Geoffrey C. Bower, Alan Dressler, S. M. Faber, Alexei V Filippenko, Karl Gebhardt, R. Green, Luis C. Ho, John Kormendy, Tod R. Lauer, John Magorrian, Scott Tremaine
Brendon J. Brewer, Tommaso Treu, Anna Pancoast, Aaron J. Barth, Vardha N. Bennert, Misty C. Bentz, Alexei V Filippenko, Jenny E. Greene, Matthew A. Malkan, Jong-Hak Woo
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