Solar Events: Data Analysis and Interpretation
Dive into the analysis and interpretation of solar events like EUV waves, filaments, and damping times. Explore the different measurements, approaches, and calculations involved in studying these phenomena. Discover key findings and considerations from research in this field.
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Europska Unija Ulaganje u budu nost Projekt je sufinancirala Europska Unija iz Europskog socijalnog fonda Mateja Dumbovi & Ja a alogovi Hvar Observatory, Faculty of Geodesy, University of Zagreb
April 2010 Today: SDO/AIA EUV waves catalog March 1997 February 2010: NEMO catalog AIM: EVENT LIST Should we add other information?
Some provide measurements at different heights or slices, some give average values What is the best approach? Average values? What in case when period depends on time?
The projected length of the filament, determined roughly by approximating filament with the straight lines from Luna et al (2014) Is that good enough ?
Other properties? (e.g. phase?) Calculate Alfven velocity? Calculate damping time/period? Other suggestions?
SO FAR. 800 (min) 12 papers 600 y = 2.54x0.98 R = 0.75 19 events (not all have properties measurements) 400 200 9 LATO, 9 LALO 0 0 50 100 150 200 T (min) 44% triggered by EUV wave 78% LATO s triggered by EUV wave (11% LALO s) Damping time vs period (damped harmonic only) 61% triggered by flare 89% LATO s triggered by flare (33% LALO s)
SO FAR. 12 papers 200 y = 26.14x0.12 R = 0.00 T (min) 19 events (not all have properties measurements) 9 LATO, 9 LALO 0 0 100 200 300 400 L (Mm) 44% triggered by EUV wave 78% LATO s triggered by EUV wave (11% LALO s) Period vs length (all damped harmonic events) 61% triggered by flare 89% LATO s triggered by flare (33% LALO s)
Period vs length 200 200 y = 26.14x0.12 R = 0.00 T (min) T (min) 0 0 0 100 200 300 400 0 100 200 L (Mm) 300 400 L (Mm) all damped harmonic events LATO s 200 T (min) What to make of this? 0 0 100 200 300 400 L (Mm)
