2007/01/25 by Z. E. Musielak, S. Routh, R. Hammer · 2 citations
Physics and Astronomy · #Classical mechanics #Computational physics #Cutoff #Cutoff frequency #Flux (metallurgy) #Flux tube #Ionosphere and magnetosphere dynamics #Isothermal process #Magnetic field #Magnetic flux #Materials science #Mechanics #Optics #Physics #Quantum mechanics #Solar and Space Plasma Dynamics #Stellar, planetary, and galactic studies #Thermodynamics #Wave propagation #astro-ph
paper · pdf · doi:10.1086/512776
published as Astrophys.J.659:650-654,2007 · 13 pages, to appear in ApJ Vol 660 No 1
arxiv created 2007/01/25 · openalex publication_date 2007/04/06 · arxiv updated 2011/02/11 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Propagation of torsional Alfvén waves along magnetic flux tubes has been extensively studied for many years, but no conclusive results regarding the existence of a cutoff frequency for these waves have been obtained. The main purpose of this paper is to derive new wave equations that describe the propagation of linear torsional Alfvén waves along thin and isothermal magnetic flux tubes and to use these wave equations to demonstrate that the torsional wave propagation is not affected by any cutoff frequency. It is also shown that this cutoff-free propagation is independent of the different choices of coordinate system and wave variables adopted in previous studies. A brief discussion of the implications of this cutoff-free propagation of torsional tube waves on theories of wave heating of the solar and stellar atmospheres is also given.