Syllabus

Introduction: How radiation affects the flow of matter – Cooling, Heating, Momentum transfer, Matter density variation due to annihilation/pair-production. Review of gas dynamics: Ideal fluids, Transport terms – Viscosity & heat conduction, 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, Spectral 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 winds.