About J1126-6054
J1126-6054 is an uncommon pulsar. It spins once every 202.737 ms, has a dispersion measure of 280.27 pc cm⁻³ and carries a surface magnetic field around 2.42×10^11 G.
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.