Understanding astronomical objects requires knowledge and methods from different branches of
theoretical physics: we diagnose these objects mostly by the light we receive the observed
phenomena often have to do with the flow of fluids sometimes ionised sometimes magnetised
and the measured velocities reflect dynamics driven by gravitational fields. Courses in
theoretical physics lay the foundation in classical and quantum mechanics electrodynamics and
thermodynamics but a gap remains between this foundation and its application to astrophysics.
These lecture notes build upon the core courses in theoretical physics and provides the methods
for understanding astrophysics theoretically.
