About J1036-4353
J1036-4353 is an epic pulsar. It spins once every 1.68 ms and has a dispersion measure of 61.1 pc cm⁻³.
The collapsed core of a star that exploded: about one and a half Suns of matter crushed into a ball the size of a city, held up only by the refusal of neutrons to be squeezed further.