Д и с к у с с и я
Mach cones and magnetic forces in Saturn's rings
T. W. Hartquist, O. Havnes+
Department of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, UK
+Department of Physics, University of Tromso, N-9037 Tromso, Norway
PACS: 52.27.Lw, 52.35.Fp, 96.30.Wr
Abstract
Recently, Mamun, Shukla, and Bingham [2] have claimed that Havnes
and his collaborators [1] mistakenly neglected magnetic fields in their work
on Mach cones as potentially powerful diagnostics of properties in Saturn's
rings. We show that the magnetic force on a charged particle is entirely
negligible in comparison to the electric force on the particle in a wave with
a wavenumber relevant to the Saturnian Mach cone problem. Havnes et al. [1]
were not in error.