Electromagnetotoroid Structures and their Hydrodynamic Analogs
  We introduce the concept of an electromagnetotoroid in astrophysics, and explore its role in polar jets. This model represents the onset of Abraham's force driven by some external source, for example, the infall of gas towards a star. The Abraham's force term is analogous to the Magnus force, and thus represents the formation of electromagnetic vortex structures in the fabric of space-time. In principle, the proposed toroidal field structure can also provide force spaceship propulsion. 
Mario J. Pinheiro
physics.plasm-ph astro-ph.GA math-ph math.MP