ThePiper wrote:Why and how can Neutron Stars, Magnetars and Black Holes generate magnetic Fields?
1.) A lot of phenomena around Quasars, Galactic Cores, Neutron Stars and Black Holes are declared to be effects of Magnetic Fields and forces, e.g. jets, pulses, streams of matter etc.
2.) Magnetic Fields are an effect of electrodynamic forces which are the result of the motion of electrically charged particles like electrons, protons etc.
3.) Neutrons are electrically neutral; the does not have electrical charges or properties. Therefore they cann't generate magnetic fields.
Questions:
1.) How can Neutron stars and Black holes generate magnetic Fields?
Your initial assumption that magnetic fields are electrodynamic forces is incorrect. While it is certainly true that a magnetic field can be produced by the movement of a charged particle, that is not the only possible mechanism. Not every object that has a magnetic field needs to generate that field.
2.) Why can magnetic fields pass the Schwarzschild-Radius of a Black hole, while light (Photons) can not!?
The most common view of black holes argues that they do not have intrinsic magnetic fields, but have only mass, angular momentum, and electric charge. A spinning black hole with a non-zero charge generates an
external magnetic field, so there is no question of that field crossing the event horizon from the inside.
