Waves, Coriolis force and the dynamo effect
  Dynamo activity caused by waves in a rotating magneto-plasma is investigated. In astrophysical environments such as accretion disks and at sufficiently small spatial scales, the Hall effect is likely to play an important role. It is shown that a combination of the Coriolis force and Hall effect can produce a finite $\alpha$-effect by generating net helicity in the small scales. The shear/ion-cyclotron normal mode of the Hall plasma is the dominant contributor to the dynamo action for short scale motions. 
S.M. Mahajan (UTexas, Austin), P.D. Mininni (NCAR), and D.O. G\'omez   (UBA)