We have retold 3 papers by this author. 2 of them with a full read. most often about: brown dwarf, white dwarf, neutron star. 10 co-authors across our retellings.
A star's radius drops by a thousand kilometers. Not because its mass increased, but because its own magnetic field squeezed the crust like an invisible corset.
10¹⁵ Gauss — that's the magnetic field found on some white dwarfs. It is billions of times stronger than what a compass shows on Earth. A white dwarf is not a star in the usual sense, but a cooled core the size of a planet. Inside, gravity opposes the pressure of degenerate electrons.
A white dwarf is the cooling core of a Sun-like star. Its fate hinges on mass: there's a strict Chandrasekhar limit (about 1.4 solar masses) beyond which the star collapses further.