The approach is faulty too....you can't just compartmentalise astrophysical process like they do in engineering parlance. There's no "black box" approach to any problem in astrophysics and as a matter of fact, astrophysicists would tell you that if you do this, you're missing most of the problem. Astrophysical phenomena occur in a continuum...the boundaries between physical interactions within systems isn't cut and dried and you can't divorce one part of the system from the other in order to model what's happening. The whole has to be considered.
You want to find out about pulsar magnetospheres....here's
559 papers on the subject.