Journey to the Centre of a Neutron Star (Lecture - 11) by Professor G Srinivasan

Summer course 2018 - A Random walk in astro-physics

Lecture - 11 : Journey to the Centre of a Neutron Star
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

Table of Contents (powered by https://videoken.com)
0:00:00 Summer course 2018 - A Random walk in astro-physics
0:00:10 Journey to the Center of a Neutron Star (Lecture - 11)
0:01:50 How does Nature make Neutron Stars?
0:08:04 Onion skin model of a star
0:12:17 Core collapse -Neutron star -Supernova
0:12:51 Neutron Star as "ground state of matter"
0:18:28 Absolute ground state of matter at zero pressure
0:26:05 A journey to the centre
0:34:56 Beta Equilibrium in the fluid core
0:38:34 Equation of state above the "neutron drip"
0:53:44 Exotic states near the centre?
0:54:40 Exotic states?
0:58:07 Bose - Einstein Statistics
0:58:35 Bose-Einstein Distribution & Fermi-Dirac Distribution
0:59:41 Bose-Einstein Condensation
1:00:45 Degenerate Bose Gas
1:04:55 Pion condensation
1:09:17 Quark - Gluon soup?!
1:14:12 Superfluidity in Neutron Stars
1:14:53 BCS Theory of Superconductivity
1:18:21 Order Parameter
1:19:23 Why superconductivity is a low temperature phenomenon?
1:21:13 Superconductors are diamagnets
1:21:48 Superfluidity and Superconductivity
1:24:38 Superfluid states in Neutron Stars
1:31:21 Superfluid in a rotating vessel
1:41:52 Neutron superfluidity
1:45:15 Proton Superconductivity
1:47:43 Type II Superconductors
1:49:34 Type II Superconductivity
1:52:25 Abrikosov vortex lattices
1:53:27 Proton superconductivity in neutron stars
1:53:32 Proton Superconductivity
1:54:26 The inter-pinning of the fluxoids and vortices
1:54:34 Coupled 'Super states'
1:57:02 Next Lecture: Millisecond Pulsars
1:57:10 Q&A

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