Refined Magnetoseismological Technique for the Solar Corona

Gary Verth, Robert Erdélyi, David Jess

Research output: Contribution to journalArticlepeer-review

38 Citations (Scopus)


We present a step-by-step guide of a refined magnetoseismological technique for plasma diagnostics in the Sun's corona. Recently developed MHD wave theory which models a coronal loop as an expanding magnetic flux tube with an arbitrary longitudinal plasma density profile is applied to TRACE observations of fast kink oscillations. The theory predicts that using the observed ratio of the first overtone and fundamental mode to predict the plasma density scale height and not taking account of loop expansion will lead to an overestimation of scale height. For the first time, the size of this correction is quantified directly from observation and for the particular case study presented here, it is found that the overestimation is approximately by a factor of 2.
Original languageEnglish
JournalThe Astrophysical Journal
Issue number1
Publication statusPublished - 2008


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