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 (-5[1])of (10[1])two of these bodies, (-5[4])known as a kilonova. (10[1])An upper limit on these bodies’ mass is named for Tolman, Oppenheimer, and Volkov. A “glitch” (-5[1])is a small increase in the frequency (10[1])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 (10[1])particle? ■END■ (10[2]0[1])