Galactic dynamics

Oort and Lindblad’s differential rotation, Rubin and Ford’s flat rotation curves, the Navarro-Frenk-White halo profile, and Chandrasekhar’s dynamical friction – the rotation-curve and dark-matter machinery in physicskit.astro.galactic_dynamics.

Oort and Lindblad’s differential rotation: the Oort constants

Oort and Lindblad's differential rotation: the Oort constants

Rotation curves, the NFW halo, and the dark-matter mass discrepancy

Rotation curves, the NFW halo, and the dark-matter mass discrepancy

Chandrasekhar’s dynamical friction: a satellite spiraling inward

Chandrasekhar's dynamical friction: a satellite spiraling inward