Subrahmanyan Chandrasekhar

Subrahmanyan Chandrasekhar, (October 19, 1910 – August 21, 1995), was an Indian American astrophysicist born in Lahore who, with William A. Fowler, was awarded the 1983 Nobel Prize for Physics for his mathematical theory of black holes, which was a key discovery that led to the currently accepted theory on the later evolutionary stages of massive stars. The Chandrasekhar limit is named after him.
== Tossup Questions ==
# This man's number is twice the magnetic energy density times the square of a typical length scale, all over the dynamic viscosity times the magnetic diffusivity. That dimensionless quantity named for this man appears in an equation modifying the critical Rayleigh number for convective instability in the presence of a uniform magnetic field. This man and Velikhov originated the study of the magnetorotational instability, and he derived an analytic approximation for the effects of dynamical friction, or gravitational drag. He introduced a tensor form of the virial theorem that includes his namesake potential energy tensor. He also considered relativistic effects on the stability of an n = 3 polytrope, deriving a critical value of approximately 5.83 over the square of the mean mass per electron in solar mass units. For 10 points, name this man who thus derived the upper mass limit for a white dwarf.
# One person with this name was a short-lived socialist Prime Minister of India who came to power after the quick decline of the V. P. Singh led Janata Dal and was succeed by P. V. Narasimha Rao. Yet another person with this last name notably suffered from polio but took 242 wickets in test cricket as a part of the legendary spin quartet of India. In addition to Bhagwat, another person with this name organized the robbery of a British train at Kakori, and was the commander in chief of the socialist Hindustan Republic Army. That man was better known by his epithet "Azad." Another person with this name introduced a quantity which is equal to the square of the Hartman number and also used the idea of electron degeneracy pressure to give the upper bound of 1.4 solar masses as the maximum mass of a White Dwarf. For 10 points give this last name which also identifies an Indian astronomer with a namesake limit.