Neutron star of neutron

Shortly after 1932 discovered neutrons, Landau suggested that there might be dense stars composed of neutrons. 1934, bud and zwicki also put forward the concept of neutron star respectively, and pointed out that neutron star may be produced by supernova explosion. Oppenheimer and volkov passed.

The model of the first neutron star is established by calculation. Neutron stars are stars in the late stage of evolution and also formed in the center of old stars. It's just that stars that can form neutron stars are more massive. According to scientists' calculations, when the mass of an elderly star is more than ten suns, it may eventually become a neutron star, while a star with a mass less than ten suns can only become a white dwarf.

Pulsar is a kind of neutron star. A pulsar is a variable star. Pulsars were first discovered in 1967. At that time, Bell, a female graduate student, found that a star in the constellation Fox sent out periodic radio waves. After careful analysis, scientists believe that this is an unknown celestial body. Because this kind of star constantly sends out electromagnetic pulse signals, people name it pulsar. The periodicity of radio pulses emitted by pulsars is very regular. At first, people were confused about this, and even thought it might be that aliens were sending us a telegram. It is said that the first pulsar was once called "little green men I". After a year's efforts by many astronomers, it is finally confirmed that pulsars are fast-rotating neutron stars. Moreover, it is precisely because of its rapid rotation that it sends out radio pulses.