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 (-5[1])a gamma-ray burst (-5[1])from the merger (-5[1])of two of these bodies, (-5[1])known as a kilonova. An upper limit (-5[1])on these bodies’ mass is named for Tolman, (-5[1])Oppenheimer, and Volkov. (10[1])A “glitch” is a small increase in the frequency emitted by rapidly rotating examples of these bodies (0[1])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 (-5[2])are named for a subatomic particle? (10[2])■END■ (10[2]0[3])