Hinode Observations of Umbral Dots

Astronomy and Astrophysics – Astronomy

Scientific paper

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Scientific paper

We analyze observations of sunspot umbra taken by the Solar Optical Telescope (SOT) on Hinode to ascertain the properties of umbral dots. The observations consist of coordinated, multi-wavelength observing sequences spanning several hours for each spot considered. Typically these multi-wavelength observations include longitudinal magnetograms in 6302, and filtergrams in Calcium II H, G-band and blue continuum. We report on the spatial and temporal properties of the umbral dots and their relation to the umbral field and overlying chromosphere.
This work was supported in part by NASA in part under the Hinode/SOT contract NNM07AA01C.

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