Round 6: Tossup 1

A type of these objects may have formed inside of Population III “quasi-stars” or through the merger of “intermediate-mass” counterparts. Katie Bouman’s CHIRP algorithm was used to image these objects (15[1])using very-long-baseline interferometry in the EHT collaboration. These objects' accretion disks may emit large amounts of radiation (15[1])to power (*) quasars (10[2])(“KWAY-zars”). One of these objects lies inside the complex radio source Sagittarius A. Most galaxies contain a “supermassive” example of these objects at their center. (-5[1])For (10[1])10 points, name these astronomical bodies which are so dense that light cannot escape their gravity. ■END■

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