46 citations · 247 across the 17 of their papers we have counts for
5 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…
A `Numbers' Approach to Astronomical Correlations I: Introduction and Application to galaxy Scaling Relations
R. N. Henriksen, J. A. Irwin
We propose a new systematic method of studying correlations between parameters that describe an astronomical (or any) physical system. We recall that behind Dimensionless scaling l…
CHANG-ES XI: Circular Polarization in the Cores of Nearby Galaxies
Judith A Irwin, Richard N. Henriksen, Marek Wezgowiec +18
We detect 5 galaxies in the CHANG-ES (Continuum Halos in Nearby Galaxies -- an EVLA Survey) sample that show circular polarization (CP) at L-band in our high resolution data sets.…
Exact axially symmetric galactic dynamos
R. N. Henriksen, A. Woodfinden, J. A. Irwin
We give a selection of exact dynamos in axial symmetry on a galactic scale. These include some steady examples, at least one of which is wholly analytic in terms of simple function…