Subrahmanyan Chandrasekhar won the Nobel Prize in Physics in 1983 for his theoretical studies of the physical processes of importance to the structure and evolution of stars, particularly regarding white dwarfs and the Chandrasekhar limit. The other options are incorrect: Satyendranath Bose (Bose-Einstein statistics) never won a Nobel, Sarabhai was the father of Indian space program, and Bhatnagar was a chemist.