How fast can a neutron star spin?

How fast in theory can a neutron star spin?



I know it depends on it's mass. Let's say it's a big neutron star at maximum weight the it can have.



How close to the speed of light can it spin?How fast can a neutron star spin?A star found spinning more than a thousand times every second is thought to be the fastest rotating star known.



The neutron star is a burned out corpse that's collapsed into an incredible density rivaled only by black holes. It packs the mass of the Sun into a sphere the size of a city. It has been reduced to nothing but tightly huddled neutrons. A thimbleful would weigh a hundred million tons back here on Earth.



The neutron star rotates rapidly because, like a skater pulling her arms in, all its momentum is now highly concentrated.



The tiny but mighty star siphons material from a larger companion. Every now and then, a coating of the material ignites a thermonuclear explosion on the neutron star, and X-rays are released [image]. Using the European Space Agency's Integral satellite, astronomers watched these emissions to measure the spin rate of the star, catalogued as XTE J1739-285.



It is zipping around on its axis 1,122 times every second. That smashes the previous record of 760 spins per second for a neutron star.