In 1932 Chadwick proved the existence of the neutron.
In 1934 Baade and Zwicky proposed that a super nova could form a neutron star.
In 1965 Hewish and Okoye discovered the Crab Nebula neutron star.
When Baade and Zwicky theorised the neutron star they were unaware of black holes or that supernova by nucleosynthesis formed the elements above iron. We can assume that they were believing they had discovered the densest form of matter in existence?
1/ Where are the heavier elements? Nucleosynthesis would lead us to believe that the star left after a supernova would be rich in heavy elements.
2/ Spectrometry tells us that a neutron star has an at6mosphere of carbon. How can anelement, carbon exist on the surface of a neutron star without being broken down into more neutrons?
3/ The neutron star has a very strong magnetic field. By definition how can a neutral star consisting of just one component, neutrons form a magnetic field. We are told that electrons are the bearers of the magnetic moment, but there are none in the neutron star.
So if it is not a neutron star, but rather a plasma of heavy elements, then no problem forming a magnetic field and no problem holding an atmosphere of caqrbon.
We are left to explain what appears to be their incredible spin rate. Maybye what we are seeing is not spin, but rather flicker. We know the earths magnetic poles reverse from time to time ( a very long time). Therefore it could be possible that our star can reverse its magnetic field in the order of fractions of a second.