2007•The Astrophysical JournalOpen access

Initial Observations of Sunspot Oscillations Excited by Solar Flare

А. Г. Косовичев, T. Sekii

Abstract

Observations of a large solar flare on 2006 December 13 using Solar Optical Telescope (SOT) on board the 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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Key concepts: Sunspot, Solar flare, Physics, Chromosphere, Flare, Astrophysics, Solar physics, Solar telescope