One type of these bodies ceases to emit radiation at the so-called “death line.” A 2017 multi-messenger astronomy breakthrough involved measuring both gravitational waves and a gamma-ray burst (-5[1])from the merger (-5[1])of two of these bodies, known as a kilonova. An upper limit on these bodies’ (-5[1])mass is named for Tolman, (-5[1])Oppenheimer, (-5[1])and Volkov. A “glitch” is a small increase in the frequency emitted by rapidly rotating (10[1])examples of these bodies called (10[1])pulsars. (-5[1])Stars (10[1])whose mass is just above the Chandrasekar limit form one of these bodies after a supernova instead of a white dwarf. For 10 points, what extremely dense celestial bodies (-5[1])are named for a subatomic particle? (10[1])■END■ (10[5])