Chandrasekhar Polarization is a partial polarization of emergent radiation at the limb of rapidly rotating early-type stars or binary star system with purely electron-scattering atmosphere, named after the Indian American astrophysicist Subrahmanyan Chandrasekhar, who first predicted its existence theoretically in 1946.
[1][2] Chandrasekhar published a series of 26 papers in The Astrophysical Journal titled On the Radiative Equilibrium of a Stellar Atmosphere from 1944 to 1948.
[3] In the 10th paper, he predicted that the purely electron stellar atmosphere emits a polarized light using Thomson law of scattering.
[5] In 1983, scientists found the first evidence of this polarization effect on the star Algol, an eclipsing binary-star system.
In September 2017,[7] a team of scientists from Australia observed this polarization on the star Regulus, which rotates at 96.5 percent of its critical angular velocity for breakup.