Astrophysics (index)about

corotation torque

(torque on a planet from coorbiting planetary disk material)

Corotation torque is torque on a planet from a circumstellar disk, i.e., a gas disk in Keplerian orbit around the star. Gravitational forces between the planet and nearby disk material surrounding it can affect the planet's orbit, slowing it, given some disk characteristics.

It is a factor in planetary migration, specifically, Type I migration, an inward migration which might help explain cases of planets in orbits where models say they would not form, such as hot jupiters.

(planet formation,migration)

Referenced by:
Lindblad torque