What does a pulsar mean?

Pulsar, also known as pulsar, is a highly magnetized rotating neutron star that emits electromagnetic radiation. But this kind of radiation can only be observed when its emitted beam points to the earth, so it can be called a pulsar.

Pulsars can periodically send electromagnetic signals to the universe because of their super-strong magnetic field and high-speed rotation. Neutron stars are actually stars at the end of evolution, mainly formed after the evolution of old stars, but with greater mass.

Features:

The density of neutron stars is as high as 10 14 g/cm3, which is exactly such a star. On the other hand, pulsars rotate very fast. This also shows that only high-speed rotating neutron stars can play the role of pulsars.

The name of a pulsar is usually followed by right ascension and declination, and sometimes declination is accurate to 0. 1 degree. For example, PSR 19 13+16.7 represents a pulsar with right ascension19 hours13 minutes and declination16.7 degrees. If the positions of two pulse stars are too similar, letters will be added after the names to distinguish them.