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  • 9:55 PM, Friday, 22 Oct 2021

Course Postgraduate
Semester Electives
Subject Code ESA662
Subject Title Physics of Interstellar and Intergalac tic Medium


Occurrence and state of cosmic diffuse matter – ion ized, atomic, molecular gas and dust – heating and cooling, equilibrium phases – probes of diffuse matter (line and continuum radiations at various wavelengths) – Thermal and io nization equilibrium of HII regions – UV shielding in molecular gas – extinction/reddening/p olarization due to dust – dust heating and IR emission – star forming regions - cosmic rays and n on-thermal synchrotron emission – recombination and re-ionization of IGM – Lyman alph a forest, Mg absorption systems – Gunn Peterson effect – Heating of intracluster gas – Sun yaev- Zeldovich effect – excess entropy problem and possible resolution

Text Books

1. M.A. Dopita and R.S. Sutherland, Diffuse Matter in the Universe, Springer.

2. D.E. Osterbrock and G.E. Ferland, Astrophysics o f Gaseous Nebulae and Active Galactic Nuclei, University Science Books.

3. L. Spitzer, Physical Processes in the Interstell ar Medium, Wiley.

4. D. Mihalas and J. Binney, Galactic Astronomy, Pr inceton University Press .

5. J.E. Dyson and D.A. Williams, The Physics of the Interstellar Medium, IOP publishing.


Same as Text Book