How spectral shapes of magnetic energy and magnetic helicity influence their respective decay timescales
How spectral shapes of magnetic energy and magnetic helicity influence their respective decay timescales
It is shown that in magnetohydrodynamics, the shapes of the magnetic energy and magnetic helicity spectra can influence whether the magnetic helicity resistive dissipation time scale is longer, equal to, or shorter than that of magnetic energy. The calculations highlight that magnetic helicity need not always dissipate significantly more slowly …