I don't think a think like a "proton star" exists. At least, it is not something of common knowledge for astronomers.
A neutron star, or pulsar, is an extremely dense star - imagine a star the mass of our Sun, compressed to a diameter of 20-30 km., due to its own gravity. A teaspoonfull of this matter has a mass of millions of tons.
The Neutron
c) neutron Neutrons are nuclear particles with approximately the same mass as a proton but with no electrical charge. They contribute to the nucleus of an atom along with protons.
A young neutron star. Really - that is what a neutron star is. If the neutron star's magnetic field is pointed towards Earth, then it is referred to as a pulsar - because of it's rapid pulsations [See related question] but it is still a neutron star.
In a nuclear fission reaction, a freely moving neutron undergoes neutron capture and initiates the nuclear fission of a fuel atom.
The average density of a neutron star with the same mass as the sun would be about 1 x 10^17 kg/m^3. Neutron stars are incredibly dense objects, as they are formed from the remnants of massive stars that have undergone supernova explosions.
neutron star
A Neutron.
It is a neutron star. A pulsar is nothing more than a neutron star whose "beams" are detectable from Earth. Apart from that they are the same thing.
Neutron
The Neutron
White dwarves, neutron stars, and black holes.
c) neutron Neutrons are nuclear particles with approximately the same mass as a proton but with no electrical charge. They contribute to the nucleus of an atom along with protons.
Good sentence for neutron star - WOW ! see that;s a neutron star !!
A young neutron star. Really - that is what a neutron star is. If the neutron star's magnetic field is pointed towards Earth, then it is referred to as a pulsar - because of it's rapid pulsations [See related question] but it is still a neutron star.
Good sentence for neutron star - WOW ! see that;s a neutron star !!
The same size as a normal neutron star. See related question.
In a nuclear fission reaction, a freely moving neutron undergoes neutron capture and initiates the nuclear fission of a fuel atom.