Syllabus

Introduction : How radiation affects the flow of ma tter -- Cooling, Heating, Momentum transfer, Matter density variation due to annihilation/pair-p roduction. Review of gas dynamics: Ideal fluids, Transport terms - Viscosity & heat conducti on, Sound waves, Shocks - Rankine-hugoniot relations. Review of radiation physics : Intensity, Flux, Energy density, Stress tensor, Transport equations, Diffusion approximation, Coupling terms in Euler's equations. Steady state transfer:Radiation-matter interaction : Einstein's coefficients, Scattering, Ionization/recombination, Opacity calculations, Spe ctral line transport. Polarized light in the equation of transfer :Hydrodynamics with radiation : non-adiabatic waves, atmospheric oscillations with radiation pressure, Relativistic hydrodynamics in the presence of a radiation field. Numerical techniques for radiation transport Examples : Ionization fronts, Comptonization, Radiating shock waves, Radiatively driven stellar w inds