Initial results from SECIS observations of the 2001 eclipse

A. C. Katsiyannis, D. R. Williams, F. Murtagh, R. T.J. McAteer, F. P. Keenan

Research output: Contribution to journalConference articlepeer-review


SECIS observations of the June 2001 total solar eclipse were taken using an Fe XIV 5303 Å filter. Automated tools based on wavelet analysis was used to detect intensity oscillations on various areas of the images. Statistical analysis of the detections found in the areas covered by the moon and the upper corona allowed us to estimate the atmospheric and instrumental effects on the detection of intensity oscillations. An area of the lower corona, close to Active Region 9513, was found with a statistically significant amount of intensity oscillations with periodicity of ∼7.5s. The shape of the wavelet transformation of those detections matches theoretical predictions of sausage-mode perturbations and for the first time in the SECIS project, second order oscillations were also detected.

Original languageEnglish
Pages (from-to)410-415
Number of pages6
JournalEuropean Space Agency, (Special Publication) ESA SP
Issue number575
Publication statusPublished - 1 Dec 2004
Externally publishedYes
EventSOHO 15 Workshop: Coronal Heating - St. Andrews, United Kingdom
Duration: 6 Sep 20049 Sep 2004


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