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Summer course 2018 - A Random walk in astro-physics
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Journey to the Center of a Neutron Star Lecture - 11
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How does Nature make Neutron Stars?
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Onion skin model of a star
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Core collapse -Neutron star -Supernova
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Neutron Star as "ground state of matter"
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Absolute ground state of matter at zero pressure
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A journey to the centre
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Beta Equilibrium in the fluid core
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Equation of state above the "neutron drip"
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Exotic states near the centre?
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Exotic states?
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Bose - Einstein Statistics
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Bose-Einstein Distribution & Fermi-Dirac Distribution
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Bose-Einstein Condensation
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Degenerate Bose Gas
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Pion condensation
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Quark - Gluon soup?!
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Superfluidity in Neutron Stars
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BCS Theory of Superconductivity
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Order Parameter
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Why superconductivity is a low temperature phenomenon?
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Superconductors are diamagnets
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Superfluidity and Superconductivity
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Superfluid states in Neutron Stars
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Superfluid in a rotating vessel
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Neutron superfluidity
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Proton Superconductivity
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Type II Superconductors
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Type II Superconductivity
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Abrikosov vortex lattices
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Proton superconductivity in neutron stars
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Proton Superconductivity
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The inter-pinning of the fluxoids and vortices
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Coupled 'Super states'
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Next Lecture: Millisecond Pulsars
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Q&A
Description:
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. Read more

Journey to the Centre of a Neutron Star by Professor G Srinivasan

International Centre for Theoretical Sciences
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