The power of the supernova that births a neutron star makes the sun rapidly rotate, causing it to spin several times per second. Neutron stars can rotate as fast as 43,000 times per minute.

Some are 50x that of the Sun. Neutron star, any of a class of extremely dense, compact stars thought to be composed primarily of neutrons. After the type II supernova, only the collapsed core is left behind.If it's less than 2 or 3 solar masses, it is what's known as a neutron star, named thus because it's made almost entirely of degenerate neutrons.. Neutron stars are really dense. (Smaller than the Bay Area.)
I need to emphasize that the stuff I have here represents my opinions, and errors aren't the fault of those patient pedagogues who tried to … Neutron stars have a radius on the order of 10 kilometres (6.2 mi) and a mass of about 1.4 solar masses. A neutron star is already a dead star it can produce no more energy, although massively dense it will just continue to radiate its energy out into space until there is nothing left.

Introduction to neutron stars. They have between 1.4 and 3 times as much mass as the Sun, but are compressed into a ball with a radius of about 10 km. Their cores contract into tiny, hot stars called white dwarfs while the outer material drifts away. Less massive stars don't explode like this.

Massive Stars - The Life of a Star of about 10 Solar Masses.

M. Coleman Miller Professor of Astronomy, University of Maryland. Neutron stars are typically about 20 km (12 miles) in diameter.
If the core survives the supernova, it can either become a neutron star or a black hole.

A neutron star is the collapsed core of a giant star, which before collapse had a total mass of between 10 and 29 solar masses.Neutron stars are the smallest and densest stars, excluding black holes and hypothetical white holes, quark stars, and strange stars.

Most of the star's material is blown into the space, but the core implodes rapidly into a neutron star or a singularity known a s a black hole.

This is actually what gave it the name neutron star.

That depends on how many solar masses the core is. Interesting things occur if a neutron star is not alone, but instead part of a binary system. Massive stars have a mass 3x times that of the Sun. Welcome to my neutron star page! Their masses range between 1.18 and 1.97 times that of the Sun, but most are 1.35 times that of the Sun. A solar mass is the standard way to describe mass in astronomy (One solar mass is equal to the mass of the Sun, or about 1.98892 ×10^30 kg).