A new perspective on turbulent Galactic magnetic fields through comparison of linear polarization decomposition techniques
A new perspective on turbulent Galactic magnetic fields through comparison of linear polarization decomposition techniques
We compare two rotationally invariant decomposition techniques on linear polarization data: the spin-2 spherical harmonic decomposition in two opposite parities, the E- and B-mode, and the multiscale analysis of the gradient of linear polarization, |$|\nabla \boldsymbol {P}|$|. We demonstrate that both decompositions have similar properties in the image domain and …