Resonant Absorption as Mode Conversion? II. Temporal Ray Bundle

Chris S. Hanson, Paul S. Cally

Research output: Contribution to journalArticlepeer-review

Abstract

A fast-wave pulse in a simple, cold, inhomogeneous MHD model plasma is constructed by Fourier superposition over frequency of harmonic waves that are singular at their respective Alfvén resonances. The pulse partially reflects before reaching the resonance layer, but also partially tunnels through to it to convert to an Alfvén wave. The exact absorption/conversion coefficient for the pulse is shown to be given precisely by a function of transverse wavenumber tabulated in Paper I of this sequence, and to be independent of frequency and pulse width.

Original languageEnglish (US)
Pages (from-to)105-110
Number of pages6
JournalSolar Physics
Volume269
Issue number1
DOIs
StatePublished - 2011

Keywords

  • Oscillations, solar
  • Waves, Alfvén
  • Waves, magnetohydrodynamic

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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