Flows around sunspots and pores
نویسندگان
چکیده
منابع مشابه
Speckle Masking Imaging of Sunspots and Pores
In recent years, speckle interferometry has been successfully applied to various solar phenomena and provides a powerful tool to study solar small-scale structures. The present investigation lays special emphasis on sunspots and sunspot pores. The observations have been performed with the Vacuum Tower Telescope (VTT) at the Observatorio del Teide (Tenerife) in the years from 1992 to 1994. Time ...
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The relation between the Evershed flow and moving magnetic features (MMFs) is studied using highcadence, simultaneous spectropolarimetric measurements of a sunspot in visible (630.2 nm) and near-infrared (1565 nm) lines. Doppler velocities, magnetograms, and total linear polarization maps are calculated from the observed Stokes profiles. We follow the temporal evolution of two Evershed clouds t...
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The two-dimensional temperature distribution in a highly structured sunspot and in two small umbrae is determined from a three-colour photometry in narrow spectral continua. Disturbing influences from the earth’s atmosphere are removed by speckle masking techniques, yielding a spatial resolution limited by the telescope’s aperture. The corresponding colour temperatures are consistent over a ran...
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ژورنال
عنوان ژورنال: Solar Physics
سال: 1992
ISSN: 0038-0938,1573-093X
DOI: 10.1007/bf00148428