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Course content

1.The interstellar medium: composition and distribution, cooling and heating, thermodynamic equilibrium, two and three phase models.
2.Dynamics of ideal fluids: continuity and Euler equations, energy equation, entropy, heat equation, sound speed, hydrostatic applications; shock waves, adiabatic and radiative shocks, hydrodynamic instability, thermal instability.
3.Non-ideal fluids and MHD: viscosity, the stress tensor, Navier-Stokes equation, general heat equation, turbulence; magneto-hydrodynamics, Euler equation with magnetic field, freezing of the magnetic field.
4.Star formation: properties of molecular clouds, Jeans theory, isothermal sphere, Lane-Emden equation, Bonnor-Ebert mass, stability of clouds via: rotation, magnetic field and turbulence, cloud collapse.
5.Dynamics of the interstellar medium: evolution of a supernova remnant, Sedov-Taylor solution, late phases, evolution of a wind bubble, internal structure of the bubble, structure and evolution of superbubbles in galaxy disks, galactic fountains.

Bibliography
Principles of Astrophysical Fluid Dynamics, Clarke & Carswell, C.U.P.
The Formation of Stars, Stahler & Palla, Wiley-VCH
The Physics of Astrophysics II - Gas Dynamics, F. H. Shu, University Science Book
Physical Processes in the Interstellar Medium, L. Spitzer, Wiley-VCH