Sun: convection;
Sun: granulation;
Sun: photosphere;
Sun: magnetic fields;
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摘要:
Advances in solar instrumentation have led to widespread use of time series to study the dynamics of solar features, especially at small spatial scales and at very fast cadences. Physical processes at such scales are important as building blocks for many other processes occurring from the lower to the upper layers of the solar atmosphere and beyond, ultimately for understanding the larger picture of solar activity. Ground-based (Swedish Solar Telescope) and space-borne (Hinode) high-resolution solar data are analyzed in a quiet-Sun region that displays negative-polarity small-scale magnetic concentrations and a cluster of bright points observed in G-band. The region is characterized by two granular-sized convective vortex-type plasma motions, one of which appears to be affecting the dynamics of magnetic features and bright points in its vicinity and is therefore the main target of our investigations. We followed the evolution of the bright points, intensity variations at different atmospheric height, and the magnetic evolution for a set of interesting selected regions. We describe the evolution of the photospheric plasma motions in the region near the convective vortex and some plausible cases for convective collapse detected in Stokes profiles.
机构:
Russian Acad Sci, AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia
St Petersburg State Tech Univ, St Petersburg 195251, RussiaRussian Acad Sci, AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia
Barsukov, D. P.
Goglichidze, O. A.
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机构:
Russian Acad Sci, AF Ioffe Phys Tech Inst, St Petersburg 194021, RussiaRussian Acad Sci, AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia
Goglichidze, O. A.
Tsygan, A. I.
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机构:
Russian Acad Sci, AF Ioffe Phys Tech Inst, St Petersburg 194021, RussiaRussian Acad Sci, AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia