Browsing by Author "Fedun, V."
Now showing 1 - 3 of 3
Results Per Page
Sort Options
- ItemMagnetohydrodynamic Wave Modes of Solar Magnetic Flux Tubes with an Elliptical Cross Section(2021) Aldhafeeri, A.A.; Verth, G.; Brevis Vergara, Wernher Ariel; Jess, D.B.; McMurdo, M.; Fedun, V.
- ItemProper orthogonal and dynamic mode decomposition of sunspot data(2021) Albidah, A. B.; Brevis, W.; Fedun, V.; Ballai, I.; Jess, D. B.; Stangalini, M.; Higham, J.; Verth, G.High-resolution solar observations show the complex structure of the magnetohydrodynamic (MHD) wave motion. We apply the techniques of proper orthogonal decomposition (POD) and dynamic mode decomposition (DMD) to identify the dominant MHD wave modes in a sunspot using the intensity time series. The POD technique was used to find modes that are spatially orthogonal, whereas the DMD technique identifies temporal orthogonality. Here, we show that the combined POD and DMD approaches can successfully identify both sausage and kink modes in a sunspot umbra with an approximately circular cross-sectional shape. This article is part of the Theo Murphy meeting issue 'High-resolution wave dynamics in the lower solar atmosphere'.
- ItemProper orthogonal and dynamic mode decomposition of sunspot data: POD and DMD of Sunspot Data(2021) Albidah, A.B.; Brevis Vergara, Wernher Ariel; Fedun, V.; Ballai, I.; Jess, D.B.; Stangalini, M.; Higham, J.; Verth, G.