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 (2)

• Interaction between a fast rotating sunspot and ephemeral regions as the origin of the major solar event on 2006 December 13
• Properties of Flares-Generated Seismic Waves on the Sun

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• Properties of high-degree oscillation modes of the Sun observed with Hinode/SOT
• First Observation of Chromospheric Waves in a Sunspot by DKIST/ViSP: The Anatomy of an Umbral Flash
• Three-minute Sunspot Oscillations Driven by Magnetic Reconnection in a Light Bridge
• Comparison of photometric variability before and after stellar flares
• The effect of a solar flare on chromospheric oscillations
• Spatial and temporal analysis of 3-minute oscillations in the chromosphere associated with the X2.2 Solar Flare on 2011 February 15
• Erupting Magnetic Flux Rope Affects Running Penumbral Waves
• Effects of background periodic flow on MHD fast wave propagation to a coronal loop