Math, asked by manyatapandey112007, 6 months ago

Give an (brief) essay on Dr. S Chandrashekhar. Pls!! It should be brief>

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Answered by aditi1661
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Subrahmanyan Chandrasekhar FRS (About this soundpronunciation) (19 October 1910 – 21 August 1995)[3] was an Indian-American astrophysicist who spent his professional life in the United States.[4] He was awarded the 1983 Nobel Prize for Physics with William A. Fowler for "...theoretical studies of the physical processes of importance to the structure and evolution of the stars". His mathematical treatment of stellar evolution yielded many of the current theoretical models of the later evolutionary stages of massive stars and black holes.[5][6] The Chandrasekhar limit is named after him.

Answered by tahirkhan62
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In this Indian name, the name Subrahmanyan is a patronymic, not a family name, and the person should be referred to by the given name, Chandrasekhar.

Subrahmanyan Chandrasekhar FRS (About this soundpronunciation) (19 October 1910 – 21 August 1995)[3] was an Indian-American astrophysicist who spent his professional life in the United States.[4] He was awarded the 1983 Nobel Prize for Physics with William A. Fowler for "...theoretical studies of the physical processes of importance to the structure and evolution of the stars". His mathematical treatment of stellar evolution yielded many of the current theoretical models of the later evolutionary stages of massive stars and black holes.[5][6] The Chandrasekhar limit is named after him.

Subrahmanyan Chandrasekhar

FRS

Subrahmanyan Chandrasekhar.gif

Subrahmanyan Chandrasekhar

Born

19 October 1910

Lahore, Punjab, British India (present-day Punjab, Pakistan)

Died

21 August 1995 (aged 84)

Chicago, Illinois, U.S.

Citizenship

United States

Alma mater

University of Madras (B.Sc.)

Trinity College, Cambridge (M.Sc., Ph.D.)

Known for

Chandrasekhar limit

Chandrasekhar number

Chandrasekhar friction

Chandrasekhar–Kendall function

Chandrasekhar's H-function

Emden–Chandrasekhar equation

Chandrasekhar–Page equations

Chandrasekhar tensor

Chandrasekhar virial equations

Batchelor–Chandrasekhar equation

Schönberg–Chandrasekhar limit

Chandrasekhar's white dwarf equation

Chandrasekhar polarization

Chandrasekhar's X- and Y-function

Discrete Ordinates Method

Others in list form

Spouse(s)

Lalitha Doraiswamy (1936–1995)

Awards

FRS (1944)[1]

Adams Prize (1948)

Nobel Prize in Physics (1983)

Copley Medal (1984)

National Medal of Science (1966)

Royal Medal (1962)

Padma Vibhushan (1968)

Heineman Prize (1974)

Scientific career

Fields

Astrophysics

General Relativity

Fluid dynamics

Radiation

Institutions

University of Chicago

Yerkes Observatory

Ballistic Research Laboratory

University of Cambridge

Thesis

Polytropic distributions (1933)

Doctoral advisor

Ralph H. Fowler

Arthur Eddington

Doctoral students

Donald Edward Osterbrock

Guido Münch

Roland Winston

Jeremiah P. Ostriker

Jerome Kristian

Yousef Sobouti

Anne Barbara Underhill

Arthur Code

Surindar Kumar Trehan[2]

Signature

Subrahmanyan Chandrasekhar signature.png

Chandrasekhar worked on a wide variety of physical problems in his lifetime, contributing to the contemporary understanding of stellar structure, white dwarfs, stellar dynamics, stochastic process, radiative transfer, the quantum theory of the hydrogen anion, hydrodynamic and hydromagnetic stability, turbulence, equilibrium and the stability of ellipsoidal figures of equilibrium, general relativity, mathematical theory of black holes and theory of colliding gravitational waves.[7] At the University of Cambridge, he developed a theoretical model explaining the structure of white dwarf stars that took into account the relativistic variation of mass with the velocities of electrons that comprise their degenerate matter. He showed that the mass of a white dwarf could not exceed 1.44 times that of the Sun – the Chandrasekhar limit. Chandrasekhar revised the models of stellar dynamics first outlined by Jan Oort and others by considering the effects of fluctuating gravitational fields within the Milky Way on stars rotating about the galactic centre. His solution to this complex dynamical problem involved a set of twenty partial differential equations, describing a new quantity he termed 'dynamical friction', which has the dual effects of decelerating the star and helping to stabilize clusters of stars. Chandrasekhar extended this analysis to the interstellar medium, showing that clouds of galactic gas and dust are distributed very unevenly.

Chandrasekhar studied at Presidency College, Madras (now Chennai) and the University of Cambridge. A long-time professor at the University of Chicago, he did some of his studies at the Yerkes Observatory, and served as editor of The Astrophysical Journal from 1952 to 1971. He was on the faculty at Chicago from 1937 until his death in 1995 at the age of 84, and was the Morton D. Hull Distinguished Service Professor of Theoretical Astrophysics.[8]

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