All of the above.
See related questions.
The reasons behind the magnetic field of a neutron star are not clear. Neutron stars are the collapsed core of star of 10 to 30 solar masses. One theory is that the magnetic field of a neutron star is because of the conservation of magnetic flux. If a star had a magnetic flux over its surface and the star then collapsed to a much smaller neutron star but the flux was conserved, then the same flux for the neutron star would be spread over a much smaller area making the magnetic field much stronger. But this explanation goes only partway towards explaining the neutron stars' magnetic field.
nitrogen is not magnetic
because they are super dense
A pulsar
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.
Has it's magnetic axis directed towards Earth
The reasons behind the magnetic field of a neutron star are not clear. Neutron stars are the collapsed core of star of 10 to 30 solar masses. One theory is that the magnetic field of a neutron star is because of the conservation of magnetic flux. If a star had a magnetic flux over its surface and the star then collapsed to a much smaller neutron star but the flux was conserved, then the same flux for the neutron star would be spread over a much smaller area making the magnetic field much stronger. But this explanation goes only partway towards explaining the neutron stars' magnetic field.
Since a neutron has no charge, it would not be deflected by a magnetic field.
as magnetic moments are created by the movement of electric charges Since the neutron is a neutral particle the magnetic moment is an indication of substructure i.e. the neutron is made of other electrically charged particles (quarks).There is a cloud of pi-mesons around the neutrons in result to the exchange of pi-mesons (the exchange particle of the strong force) with the other nucleons (proton and neutrons).the non-zero magnetic moment of the neutron indicates that it is not an elementary particle as it carries no net charge but still interacts with a magnetic field.The magnetic moment is negative which means that the neutron has a tendency to align anti parallel to a magnetic field rather than parallel to the field.
nitrogen is not magnetic
as magnetic moments are created by the movement of electric charges Since the neutron is a neutral particle the magnetic moment is an indication of substructure i.e. the neutron is made of other electrically charged particles (quarks).There is a cloud of pi-mesons around the neutrons in result to the exchange of pi-mesons (the exchange particle of the strong force) with the other nucleons (proton and neutrons).the non-zero magnetic moment of the neutron indicates that it is not an elementary particle as it carries no net charge but still interacts with a magnetic field.The magnetic moment is negative which means that the neutron has a tendency to align anti parallel to a magnetic field rather than parallel to the field.
because they are super dense
neutron stars
A pulsar is a rapidly spinning neutron star that releases regular pulses of electromagnetic radiation from its magnetic field
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.
As far as I know, in a magnetar, which is a special type of neutron star.
Neutron