Initial Observations of Sunspot Oscillations Excited by Solar Flare

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.

10 pages, 6 figures, ApJL in press

References in corpus (1)

• Interaction between a fast rotating sunspot and ephemeral regions as the origin of the major solar event on 2006 December 13

Cited by in corpus (2)

• A Comprehensive View of the 2006 December 13 CME: From the Sun to Interplanetary Space
• Properties of high-degree oscillation modes of the Sun observed with Hinode/SOT