Speaker
Marco Stangalini
(ASI Italian Space Agency)
Description
A solar magnetic flux tube, like any physical system, is capable of supporting a variety of resonances, which constitute its natural response to external forcing. Apart from a few single low order eigenmodes in small scale magnetic structures, several simultaneous resonant modes were not found until recently. These eigenmodes are associated to small but coherent oscillations and require the application of particular spatial filtering techniques to be detected.
In this talk I will report and discuss about the detection and physical implications of large scale coherent oscillations in a sunspot, with a spectrum significantly different from p-modes.
| Submit to 'solar physics' topical issue? | No |
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Primary author
Marco Stangalini
(ASI Italian Space Agency)
