http://arxiv.org/abs/2003.07284
We propose to detect a proxy of the magnetic helicity in galaxies by observing the dust polarization of the edge-on galaxy NGC 891. Our numerical results of mean-field dynamo calculations show that there should be a large-scale component of the rotationally invariant parity-odd B polarization that we predict to be negative in the first and third quadrants, and positive in the second and fourth quadrants. The large-scale parity-even E polarization is predicted to be negative near the axis and positive further away in the outskirts.
A. Brandenburg and R. Furuya
Tue, 17 Mar 20
29/63
Comments: 6 pages, 4 figures, 2 tables, submitted to MNRAS