Magnetic field Particle System

[sketchers1]

Is there a way to create a particle system that looks like a magnetic field?
Similar to this: http://csep10.phys.utk.edu/astr161/lect/jupiter/magfield-small.gif

or this: http://image.shutterstock.com/display_pic_with_logo/51807/51807,1263300933,1/stock-photo-fractal-magnetic-field-lines-44332207.jpg

Thanks!

[protoben]

you could use the circular wind of effect your particles.

[system]

It seems like an animated texture would be better