Probing Black Hole Gravity

摘要

Black holes (BHs) are among the most amazing predictions of Einstein's general relativity theory. In isolation, BHs are describable simply by their mass and spin rate and are practically invisible-only observed as they feed on surrounding gas, such as when a star gets close enough and is disrupted and ripped apart by the tidal forces of a supermas-sive BH (SMBH) with the mass of millions to billions of Suns.