Liu, W., Ofman, L., Nitta, N.V., Aschwanden, M.J., Schrijver, C.J.,
Title, A.M., and Tarbell, T.D.,
"Quasi-periodic Fast-mode Wave Trains Within a Global EUV Wave and Sequential Transverse Oscillations Detected by SDO/AIA,"
ApJL 753, 52, 2012.
Click on the image above for a larger .gif version.
Here we have a rather glorious cartoon, replete with mechanisms involved in coronal developments associated with an eruptive flare. The Archivist likes the information being gleaned about the lateral development of the disturbance. Uchida's original description of global waves used the WKB approximation (or maybe the Huyghens principle) to describe the bending of the global wave front towards the chromosphere, thus neatly offering a theory for the Moreton wave. Here these wonderful new observations show much more about the processes involved, including especially a quasi-periodic property.
27 April 2012
29 June 2012