Determination of transverse density structuring from propagating magnetohydrodynamic waves in the solar atmosphere

I. Arregui*, A. Asensio Ramos, David James Pascoe

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)

Abstract

We present a Bayesian seismology inversion technique for propagating magnetohydrodynamic transverse waves observed in coronal waveguides. The technique uses theoretical predictions for the spatial damping of propagating kink waves in transversely inhomogeneous coronal waveguides. It combines wave amplitude damping length scales along the waveguide with theoretical results for resonantly damped propagating kink waves to infer the plasma density variation across the oscillating structures. Provided that the spatial dependence of the velocity amplitude along the propagation direction is measured and the existence of two different damping regimes is identified, the technique would enable us to fully constrain the transverse density structuring, providing estimates for the density contrast and its transverse inhomogeneity length scale.

Original languageEnglish
Article numberL34
Number of pages6
JournalAstrophysical Journal Letters
Volume769
Issue number2
DOIs
Publication statusPublished - 1 Jun 2013

Keywords

  • Magnetohydrodynamics (MHD)
  • Statistical
  • Corona
  • Oscillations

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