What is a Neutron Star?
Formation Of A Neutron Star
Pulsars are what's left over after a massive star much bigger than our sun collapses at the end of its lifetime so a massive star maybe 10 times the size of the sun or maybe even more maybe even 20 or 30 will explode as a supernova and the center of the star collapses to become a neutron star.
Effects
All the other material around it moves away at very very high rates of speed for the supernova the star itself the neutron star is spinning very very rapidly, there's a magnetic field that was in the original star a trillion times stronger than that on the earth that gets compressed and gets frozen into that surface of the neutron star so now you have a strong spinning magnet basically in space and that causes all sorts of radiation to be generated.
What Happen In a Pulsar
What normally happens on most pulsars is you get radio waves that come out of the magnetic poles of the neutron star and because these things are spinning and because the magnetic poles don't happen to be aligned with the rotation axis just like on earth if that beam of radio waves passes through our line of sight we see pulses of radiation and that's why we call them pulsars.
A normal pulsar that comes from a supernova will tend to last somewhere between 10 and 100 million years well if you think about it our universe is more than 10 billion years old so if something lasts 10 to 100 million years that's just a very short amount of time when a star explodes that pulsar spins for 10 or 100 million years and then is rotating too slow to cause that radiation to escape anymore and basically it's just a long-dead neutron star but what happens is if that neutron star has a companion star a star like our sun for instance eventually that star will turn into a red giant and as it does as it continues to orbit the neutron star it transfers material in the form of a disk onto the neutron star.
That transfer of material also transfers angular momentum which means that you spin that star the neutron star faster and faster so you end up getting a neutron star that spins very rapidly up to the fastest one that we know which we actually found with the green meg telescope is spinning 716 times per second that's faster than a kitchen blender spins and then these things can last forever because once you spin them that fast with a much smaller magnetic field they'll last for billions of years rather than just tens of millions of years.
~.Lijo Ferdinand.
Thanks for Reading all the best and see you next time so you.👍