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Compton Scattering and the Gamma Ray Universe (Lecture – 06) by Professor G Srinivasan

3,469 views · Published 4 June 2018 · 2:08:10 · Indexed 22 September 2026

Channel: International Centre for Theoretical Sciences · 2018 · Science & Technology

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Summer course 2018 - A Random walk in astro-physics

Lecture - 06 : Compton Scattering and the Gamma Ray Universe
by Professor G Srinivasan, Raman Research Institute (Retired)

10.00 to 12.00 Friday, 18 May 2018
Madhava Lecture Hall, ICTS Bangalore

The range of densities, temperatures, magnetic fields, etc. that obtain in the Universe are staggering: from 10-27 g cm-3 to 1015 g cm-3, from 3K to 1010 K, from 10-6 G to 1015 G. Not surprisingly, the variety of physical phenomena one encounters during the study of celestial objects is truly impressive. This set of lectures is intended to illustrate the richness of Astrophysics. It will be a random walk in basic physics, with numerous illustrations from astronomy. The topics in physics that will be reviewed have been chosen on the basis of their importance in contemporary astronomy.

Topics:

Absorption and emission of radiation
Radiation from relativistic electrons
Compton scattering of radiation
Spontaneous and stimulated emission
Hyperfine splitting of energy levels
Molecular spectra
Astrophysical plasma.
Quantum tunnelling.
Nuclear matter
Neutrino Oscillation
Phase transitions and the early Universe
During this random walk in physics, one will encounter a range of astronomical objects and phenomena, such as, Solar wind, gaseous nebulae, interstellar hydrogen clouds, giant molecular clouds, neutron stars and pulsars, supernova remnants, radio galaxies and quasars, active galactic nuclei, the cosmic microwave background, etc.

https://www.icts.res.in/summercourse2018

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