← Physics in Binary Pulse Theory
Physics → Binary Pulse Theory
Neutron star
In Binary Pulse Theory: Pulsar Spin
Same thing, new nameIn standard physics
The collapsed core of a massive star, spinning fast as a pulsar.
In Binary Pulse Theory
The same physics: a collapsing core keeps its angular momentum, so its spin period falls with the square of its radius.
The BPT terms behind it
Pulsar Spin is how fast a newborn neutron star turns: a collapsing core keeps its angular momentum, so its period falls as the square of its radius, and a core turning once a day that shrinks to ten kilometers turns hundreds of times a second, sweeping its beams round the sky as a pulsar.
The Chandrasekhar Mass Limit is the critical mass, M⊘ ≈ 1.43 solar masses for a carbon–oxygen white dwarf, above which a dead stellar core collapses; the book derives it as M⊘ = 3.098 · m_P³ / (μₑ · m_H)², the heaviest a white dwarf can be.
Also known as
pulsar · pulsars · magnetar
Related
The standard physics term is here to help you find your way in; the book itself writes in BPT's own terms. Read them in the lexicon, or start the book at Binary Pulse Theory.