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