Waves in Solar Photospheric Flux Tubes and their Influence on the Observable Spectrum

  1. C. T. Russell,
  2. E. R. Priest and
  3. L. C. Lee
  1. S. K. Solanki and
  2. B. Roberts

Published Online: 21 MAR 2013

DOI: 10.1029/GM058p0181

Physics of Magnetic Flux Ropes

Physics of Magnetic Flux Ropes

How to Cite

Solanki, S. K. and Roberts, B. (1990) Waves in Solar Photospheric Flux Tubes and their Influence on the Observable Spectrum, in Physics of Magnetic Flux Ropes (eds C. T. Russell, E. R. Priest and L. C. Lee), American Geophysical Union, Washington, D. C.. doi: 10.1029/GM058p0181

Author Information

  1. The Mathematical Institute, University of St. Andrews, St. Andrews, KY16 9SS, Scotland

Publication History

  1. Published Online: 21 MAR 2013
  2. Published Print: 1 JAN 1990

ISBN Information

Print ISBN: 9780875900261

Online ISBN: 9781118663868

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Keywords:

  • Solar photosphere;
  • Magnetic flux;
  • Astrophysics

Summary

Linear calculations of undamped magnetoacoustic waves in thin solar magnetic flux tubes are presented and their influence on the Stokes V profiles of various iron lines is studied. This is a necessary first step for the diagnostics of the properties of flux tube waves, in particular the amount of energy transported by them into the upper atmosphere. It is shown that, with sufficiently high spatial resolution, observations can distinguish between standing and propagating waves on the basis of line parameters of photospheric spectral lines alone. Particular attention is given to exploring quantitative diagnostics for the wave amplitude, since it is currently the most important unknown parameter determining the energy flux carried by the waves. It is found that although this parameter can be derived relatively simply if the thermal fluctuations produced by the wave are ignored (i.e. for an isothermal wave), the task becomes much more complex for the more realistic case of a coupled variation of temperature and velocity.