In astrophysics, the von Zeipel theorem states that the radiative flux
in a uniformly rotating star is proportional to the local effective gravity
The theorem is named after Swedish astronomer Edvard Hugo von Zeipel.
[3] According to the theory of rotating stars,[4] if the rotational velocity of a star depends only on the radius, it cannot simultaneously be in thermal and hydrostatic equilibrium.
The paradox is resolved, however, if the rotational velocity also depends on height, or there is a meridional circulation.
A similar situation may arise in accretion disks.