Mercury's capture into the 3/2 spin–orbit resonance including the effect of core–mantle friction

  title={Mercury's capture into the 3/2 spin–orbit resonance including the effect of core–mantle friction},
  author={A. C. M. Correia and Jacques Laskar},
The rotation of Mercury is presently captured in a 3/2 spin-orbit resonance with the orbital mean motion. The capture mechanism is well understood as the result of tidal interactions with the Sun combined with planetary perturbations. However, it is now almost certain that Mercury has a liquid core, which should induce a contribution of viscous friction at the core-mantle boundary to the spin evolution. This last effect greatly increases the chances of capture in all spin-orbit resonances… Expand
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