Embark on a fascinating 2-hour lecture exploring the intricate structure and physics of neutron stars. Delve into the formation process of these celestial objects, starting with the onion skin model of stars and progressing through core collapse and supernova events. Examine the concept of neutron stars as the "ground state of matter" and journey to their center, investigating beta equilibrium and equations of state. Explore exotic states of matter, including Bose-Einstein condensation, pion condensation, and the possibility of quark-gluon plasma. Discover the phenomena of superfluidity and superconductivity in neutron stars, covering topics such as BCS theory, order parameters, and type II superconductivity. Learn about Abrikosov vortex lattices, coupled super states, and the interplay between neutron superfluidity and proton superconductivity. Conclude with a brief introduction to millisecond pulsars and engage in a Q&A session to deepen your understanding of these extraordinary astrophysical objects.
Journey to the Centre of a Neutron Star by Professor G Srinivasan
International Centre for Theoretical Sciences via YouTube
Overview
Syllabus
Summer course 2018 - A Random walk in astro-physics
Journey to the Center of a Neutron Star Lecture - 11
How does Nature make Neutron Stars?
Onion skin model of a star
Core collapse -Neutron star -Supernova
Neutron Star as "ground state of matter"
Absolute ground state of matter at zero pressure
A journey to the centre
Beta Equilibrium in the fluid core
Equation of state above the "neutron drip"
Exotic states near the centre?
Exotic states?
Bose - Einstein Statistics
Bose-Einstein Distribution & Fermi-Dirac Distribution
Bose-Einstein Condensation
Degenerate Bose Gas
Pion condensation
Quark - Gluon soup?!
Superfluidity in Neutron Stars
BCS Theory of Superconductivity
Order Parameter
Why superconductivity is a low temperature phenomenon?
Superconductors are diamagnets
Superfluidity and Superconductivity
Superfluid states in Neutron Stars
Superfluid in a rotating vessel
Neutron superfluidity
Proton Superconductivity
Type II Superconductors
Type II Superconductivity
Abrikosov vortex lattices
Proton superconductivity in neutron stars
Proton Superconductivity
The inter-pinning of the fluxoids and vortices
Coupled 'Super states'
Next Lecture: Millisecond Pulsars
Q&A
Taught by
International Centre for Theoretical Sciences
