Vortex suppression by planet eccentricity in a disk
We have investigated the strength and lifetime of a vortex driven by a Jupiter-mass planet on a fixed eccentric orbit in a two-dimensional protoplanetary disk. The planet eccentricity is gradually increased in our hydrodynamical simulations to study the problem. We found that the strength of vortex becomes weakened and lifetime becomes shortened as the planet eccentricity increases. The cause of vortex suppression is briefly discussed.