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  • 3:21 PM, Sunday, 24 Oct 2021

Course Dual Degree (B. Tech + M.S / M.Tech)
Semester Electives
Subject Code ESA462
Subject Title Physics of Interstellar and Intergalactic Medium


Occurrence and state of cosmic diffuse matter – ionized, atomic, molecular gas and dust – heating and cooling, equilibrium phases – probes of diffuse matter (line and continuum radiations at various wavelengths) – Thermal and ionization equilibrium of HII regions – UV shielding in molecular gas – extinction/reddening/polarization due to dust – dust heating and IR emission – star forming regions - cosmic rays and non-thermal synchrotron emission – recombination and re-ionization of IGM – Lyman alpha forest, Mg absorption systems – Gunn Peterson effect – Heating of intracluster gas – Sunyaev- 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 of Gaseous Nebulae and Active Galactic Nuclei, University Science Books.

3. L. Spitzer, Physical Processes in the Interstellar Medium, Wiley.

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

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


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