⚪ White Dwarf Mass-Radius Relation: Degenerate Electrons and the Chandrasekhar Limit (2D)

A white dwarf star drawn to scale beside the Earth. Change the electrons-per-nucleon ratio, the starting mass and the accretion rate and watch the star shrink as it gains mass, the central density climb and the structure approach the Chandrasekhar limit. The hydrostatic structure is integrated with the exact degenerate electron gas pressure, and the Lane-Emden constants, the limit, the nonrelativistic scaling and the radius of Sirius B are checked numerically, with four in-page numerical checks.