Motions of a Black Hole near the Center of a Galaxy
Some years ago we published an account of experiments which indicated that the nucleus of a galaxy orbits around the mass centroid. This can be viewed as an orbiting density wave which grows near the center in a galaxy model that starts without such motions. While these experiments were run without a massive particle, we suggested that similar physical effects might cause a massive particle near the center to oscillate with larger amplitudes than indicated by simple Brownian motion arguments. Results from recent experiments will be reported to clarify some of the issues raised by a massive particle (a black hole) near the center.
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