High-frequency oscillations in a solar active region coronal loop |
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| Authors: | D.R. Williams K.J.H. Phillips P. Rudawy M. Mathioudakis P.T. Gallagher E. O'Shea F.P. Keenan P. Read B. Rompolt |
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| Affiliation: | 1Department of Pure and Applied Physics, The Queen's University of Belfast, Belfast BT7 1NN;2Space Science &Technology Department, Rutherford Appleton Laboratory Chilton, Didcot, Oxon. OX11 0QX;3Institute for Astronomy, University of Wrocław, Wrocław, Poland;4Big Bear Solar Observatory, New Jersey Institute of Technology, Big Bear City, CA 92314, USA |
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| Abstract: | The Solar Eclipse Corona Imaging System (SECIS) was used to record high-cadence observations of the solar corona during the total solar eclipse of 1999 August 11. During the 2 min 23.5 s of totality, 6364 images were recorded simultaneously in each of the two channels: a white light channel, and the Fe xiv (5303 Å) 'green line' channel ( T ∼2 MK) . Here we report initial results from the SECIS experiment, including the discovery of a 6-s intensity oscillation in an active region coronal loop. |
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| Keywords: | MHD waves eclipses Sun: activity Sun: corona Sun: oscillations |
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