I’m currently constructing a solar wind outflow model, incrementally relaxing a series of initial assumptions in a stage-by-stage process. I’ve now arrived at the stage where I want to consider magnetism – and the MHD equations. My plan is, in what seems the simplest starting point, to approximate the sun’s magnetic field as a north-south magnetic dipole. My question is, therefore, given I am (as a maths student) an EM newbie, are there any recommend books, etc, w/r/t/ my particular interests, and secondly, more mathematically, how would I, assuming a 2D solar model and obvious spherical polars, calculate the magnetic field at any point? Thanks. And thanks again if you understood that. EDIT: This - http://seismo.berkeley.edu/~rallen/eps122/lectures/L05.pdf (pages 3,4,5,6) - seems, for the earth, to exactly calculate what I'm talkling about, but I don't quite follow the absent steps(?).