77 citations · 179 across the 11 of their papers we have counts for
3 papers · 1 filter
Helicity in the Large-Scale Galactic Magnetic Field
J. L. West, R. N. Henriksen, K. Ferrière +4
We search for observational signatures of magnetic helicity in data from all-sky radio polarization surveys of the Milky Way Galaxy. Such a detection would help confirm the dynamo…
Evolving Galactic Dynamos and Fits to the Reversing Rotation Measures in the Halo of NGC 4631
Alex Woodfinden, Richard Henriksen, Judith Irwin +1
Rotation measure (RM) synthesis maps of NGC 4631 show remarkable sign reversals with distance from the minor axis in the northern halo of the galaxy on kpc scales. To explain this…
Exact spirally symmetric galactic dynamos
R. N. Henriksen, A. Woodfinden, J. A. Irwin
This paper extends the results of an earlier paper on scale invariant galactic spiral magnetic modes to time dependent, scale invariant, spirals. The examples given are all exact i…