Initial Observations of Sunspot Oscillations Excited by Solar Flare
A. G. Kosovichev, T. Sekii
TL;DR
This paper reports the detection of high-frequency oscillations in a sunspot's chromosphere triggered by a solar flare, offering potential new insights into sunspot structure and flare dynamics.
Contribution
It presents the first observations of flare-excited high-frequency oscillations in sunspot chromospheres using Hinode data.
Findings
Oscillations observed in sunspot umbra during flare
Oscillations linked to flare activity
Potential diagnostic tool for sunspot structure
Abstract
Observations of a large solar flare of December 13, 2006, using Solar Optical Telescope (SOT) on Hinode spacecraft revealed high-frequency oscillations excited by the flare in the sunspot chromosphere. These oscillations are observed in the region of strong magnetic field of the sunspot umbra, and may provide a new diagnostic tool for probing the structure of sunspots and understanding physical processes in solar flares.
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