Mediatheque

Subrahmanyan Chandrasekhar works on problems of ballistics at Ballistic Research Laboratories at the Aberdeen Proving Ground. Two reports, written in 1943, show the type of problems he was working on at this time: the first is "On the decay of plane shock waves", while the second is "The normal reflection of a blast wave."

On the advice of Professor P.A.M. Dirac, Subrahmanyan Chandrasekhar spends the third year of his graduate scholarship in Copenhagen, Denmark, at Niels Bohr’s Institute of Theoretical Physics. During this period he dedicates himself to pure physics.

Subrahmanyan Chandrasekhar visits briefly Harvard University at the invitation of the then Director, Dr. Harlow Shapley. Here Dr. Otto Struve and President Robert Maynard Hutchins offer Chandrasekhar a position as a Research Associate at the University of Chicago.

Subrahmanyan Chandrasekhar announces the result of his work about stellar structure. Thanks to his studies on white dwarf stars, he formulates the astrophysical Chandrasekhar limit. The limit describes the maximum mass of a white dwarf star, ~1.44 solar masses, or equivalently, the minimum mass which must be exceeded for a star to ultimately collapse into a neutron star or black hole (following a supernova).

Subrahmanyan Chandrasekhar sudies the theory of radiative transfer, including the theory of stellar atmospheres and the quantum theory of the negative ion of hydrogen and the theory of planetary atmospheres, including the theory of the illumination and the polarization of the sunlit sky. He publishes a monografy on this research entitled Radiative Transfer.

Subrahmanyan Chandrasekhar is born in Lahore (then a part of British India). He is third child of a family of four sons and six daughters. His father, Chandrasekhara Subrahmanya Ayyar is an officer in Government Service in the Indian Audits and Accounts Department. His mother, Sita (neé Balakrishnan) is a cultured woman devoted to her children and intensely ambitious for them. Till he is twelve, Subrahmanyan studies at home with his parents and with private tuition.

Subrahmanyan Chandrasekhar marries Lalitha Doraiswamy, a girl known when both are undergraduate students at the Presidency College.

Subrahmanyan Chandrasekhar works at Yerkes Observatory, Williams Bay, Wisconsin.

Subrahmanyan Chandrasekhar deepens the thema of the general theory of relativity and relativistic astrophysics.

Subrahmanyan Chandrasekhar attempts to develop the mathematical theory of black holes, describing his work in The Mathematical Theory of Black Holes.

Subrahmanyan Chandrasekhar enters Cambridge University to undertake research under the supervision of the pioneering theoretical astrophysicist Ralph Howard Fowler.

Subrahmanyan Chandrasekhar joins the University of Chicago. In 1942, he becomes associate professor of astrophysics and in 1943 professor. In 1946, he is Distinguished Service Professor, in 1952 Morton D. Hull Distinguished Service Professor of Astrophysics in the departments of astronomy and physics, as well as at the Institute for Nuclear Physics at the Yerkes Observatory. He voluntarily retires from the University of Chicago in 1980, although he remains on as a post-retirement researcher.

Subrahmanyan Chandrasekhar gives a series of lectures on astrophysics at University of Liège. These lectures receive a warm reception.

Subrahmanyan Chandrasekhar studies the equilibrium and the stability of ellipsoidal figures of equilibrium, partly in collaboration with Norman R. Lebovitz. Chandrasekhar publicates a monograph on this research entitled Ellipsoidal Figures of Equilibrium.

Subrahmanyan Chandrasekhar dies in Chicago for hearth failure.

Subrahmanyan Chandrasekhar works with physicist Max Born at the Institut für Theoretische Physik at Göttingen in Germany. Here, he studies group theory and quantum mechanics and produces work on the theory of stellar atmospheres.

Subrahmanyan Chandrasekhar earns his B.Sc. (Hon.) in physics at Presidency College. Here he writes his first paper "The Compton Scattering and the New Statistics". In July 1930, he is awarded a Government of India scholarship to pursue graduate studies at the University of Cambridge.

Subrahmanyan Chandrasekhar is elected to a Prize Fellowship at Trinity College.

Subrahmanyan Chandrasekhar moves with his family in Madras in 1918. Here he attends Hindu High School, Triplicane.

Subrahmanyan Chandrasekhar receives one half of the Nobel prize for Physics along with William A. Fowler "for his theoretical studies of the physical processes of importance to the structure and evolution of the stars".

Subrahmanyan Chandrasekhar studies hydrodynamic and hydromagnetic stability, including the theory of the Rayleigh-Bénard convection. He publicates a monograph on this research entitled Hydrodynamic and Hydromagnetic Stability.

Subrahmanyan Chandrasekhar works on colliding waves and the Newtonian two-center problem in the framework of the general theory of relativity.

Subrahmanyan Chandrasekhar publicates a monograph entitled Principles of Stellar Dynamic which includes the theory of Brownian motion. With this book he lays the foundations of the dynamical theory as a branch of classical dynamics.

Subrahmanyan Chandrasekhar makes a four-week trip to Russia. Here he visits physicists Lev Davidovich Landau, B. P. Geraismovic, and Viktor Ambartsumian. This trip convinces him to return to deepen the subject of white dwarfs.

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