If neutron star contains mostly neutrons, its magnetic field is in the range of 10^4 to 10^11 Tesla, but our sun containing a large amount of plasma have only 150 mT. How is it possible?

Edited June 16, 20178 yr by King108

If neutron star contains mostly neutrons, its magnetic field is in the range of 10^4 to 10^11 Tesla, but our sun containing a large amount of plasma have only 150 mT. How is it possible?

What a great question! One I myself asked around 12 years ago, on another now defunct forum.

Firstly, a Neutron Star is not just entirely neutrons. What percentage of other particles such as protons and electrons it contains, would produce a magnetic field.

It is more complicated then that though, and the following links may help explain.....

https://www.astro.umd.edu/~miller/teaching/questions/neutron.html

 

https://www.researchgate.net/post/What_is_the_origin_of_the_magnetic_field_of_a_neutron_star