Primordial planet spin driven by boundary layer effects in a decretion disc

Rebecca G. Martin, Stephen H. Lubow, David Vallet +4

Accretion of material from a protoplanetary disc on to a forming giant planet can spin the planet up to close to its breakup rate, ${\Omega }_{\mathrm{b}}=(G{M}_{\mathrm{p}}/R_{\mathrm{p}}^3)$, where $M_{…