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 from the merger of two of these bodies, (-5[3])known as a kilonova. (10[1])An upper limit on these bodies’ mass (10[1])is named for Tolman, (-5[1])Oppenheimer, (10[1])and Volkov. A “glitch” is a small increase in the frequency emitted by rapidly rotating examples of these bodies called pulsars. Stars 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 are named for a subatomic particle? (10[2])■END■ (10[2])