Knowra Subrahmanyan Chandrasekhar Subrahmanyan Chandrasekhar Subrahmanyan Chandrasekhar was an Indian-American astrophysicist whose mathematical work transformed understanding of stellar structure and evolution. He shared the 1983 Nobel Prize in Physics for studies of the physical processes governing stars.
Stellar structure : The study of how pressure, gravity, energy transport, and composition determine a star’s interior and observable properties. Chandrasekhar developed mathematical models describing how these quantities shape stars.
Chandrasekhar limit : The maximum mass, about 1.4 times the Sun’s mass, that electron-degenerate pressure can support in a white dwarf. It is the best-known result of his early analysis of relativistic stellar matter.
University of Madras : A public research university in Chennai, India, founded in 1857. Chandrasekhar studied physics there before pursuing research in Britain.
Neutron star : An extremely dense stellar remnant composed largely of neutrons, formed when a massive star collapses. His work helped establish that stars beyond the white-dwarf limit require different final states.
William A. Fowler : An American nuclear physicist who shared the 1983 Nobel Prize in Physics for theoretical and experimental studies of stellar reactions. Fowler shared the prize with Chandrasekhar, recognizing complementary contributions to stellar physics.
Stellar evolution : The sequence of physical changes a star undergoes as it forms, burns nuclear fuel, and reaches its final state. His research traced how stellar properties change across a star’s life.
Special relativity : Albert Einstein’s theory describing space, time, and motion when gravitational effects can be neglected. Relativistic electron energies change how degeneracy pressure scales in massive white dwarfs.
University of Cambridge : A public research university in Cambridge, England, founded in 1209. He continued his studies there and developed his work on degenerate stars.
Black hole : A region of spacetime whose gravity prevents anything, including light, from escaping beyond its event horizon. His studies of stellar collapse contributed to the physical framework for understanding black-hole formation.
Nobel Prize in Physics : An annual international award recognizing outstanding contributions to physics. The 1983 award recognized Chandrasekhar’s theoretical studies of the physical processes governing stars.
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