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Rotational spectrum: A rotating molecule will radiate only if it has a permanent electric dipole moment.
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Classroom Contents
The Interstellar Medium by Professor G Srinivasan
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- 1 Summer course 2018 - A Random walk in astro-physics
- 2 The Interstellar Medium Lecture-03
- 3 The Interstellar Medium
- 4 Star cluster NGC 265
- 5 As we journey through the interstellar space, we will encounter spectacular gaseous nebula and remnants of supernovae.
- 6 The great nebula in Orion
- 7 The horse head nebula
- 8 Pillars of dust in the Eagle Nebula
- 9 Cassiopeia A, the expanding supernova remnant
- 10 X-ray image of the remnant of TYCHO's supernova of 1572
- 11 Discovery of 21 cm radiation from Hydrogen
- 12 Discovery of interstellar hydrogen was one of the greatest discoveries in the history of astronomy. It revolutionized astronomy
- 13 The "Doppler shifted frequencies" will be different for the three clouds
- 14 Modelling the distribution of neutral hydrogen in the Galaxy
- 15 Random motion of clouds superimposed on their systematic motion around the center of the Galaxy.
- 16 The distribution of the neutral hydrogen gas in the Milky Way.
- 17 Raisin pudding model of the Interstellar Medium
- 18 Interstellar Medium Molecular Gas
- 19 Molecular Spectra
- 20 Rotational spectrum: A rotating molecule will radiate only if it has a permanent electric dipole moment.
- 21 Spectral region of rotational transitions
- 22 Vibrational levels
- 23 Molecules in interstellar space
- 24 Giant Molecular Clouds
- 25 All or nothing
- 26 M 51 - Whirlpool Galaxy. Right is the visible image. The dark lanes trace the distribution of dust.
- 27 Distribution of molecular clouds is shown in blue
- 28 A star cluster in the Rosette Nebula. The wavelength of the recombination radiation will tell us about the composition of the gas.
- 29 Some 'compression wave' triggers a burst of star formation. A young star cluster is born.
- 30 Celestial Masers
- 31 The OH maser was the first celestial maser to be discovered in 1965.
- 32 Maser environment
- 33 Comet Schumaker-Levy hitting Jupiter 1994
- 34 Extragalactic MEGA MASERS
- 35 Next Lecture: Radiation from Accelerated Charges
- 36 Q&A
