Round 6: Tossup 1

A type of these objects may have formed inside of Population III (-5[1])“quasi-stars” or through the merger of “intermediate-mass” counterparts. (15[1])Katie Bouman’s CHIRP algorithm was used to image these objects using very-long-baseline interferometry (15[1])in the EHT collaboration. (15[1])These objects' accretion disks (15[1])may (15[1])emit large (15[1])amounts of radiation (15[1])to power (15[3])(*) quasars (“KWAY-zars”). One of these objects lies inside the complex radio source Sagittarius A. (10[2])Most galaxies contain a “supermassive” (10[1])example of these (10[1])objects at their center. (10[2])For 10 points, name these astronomical bodies which are so dense that light cannot escape their gravity. ■END■

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