Evolution of small-scale magnetic elements in the vicinity of granular-size swirl convective motions
arXiv:1405.2380 · doi:10.1007/s11207-014-0626-3
Abstract
Advances in solar instrumentation have led to a widespread usage of time series to study the dynamics of solar features, specially at small spatial scales and at very fast cadences. Physical processes at such scales are determinant as building blocks for many others occurring from the lower to the upper layers of the solar atmosphere and beyond, ultimately for understanding the bigger picture of solar activity. Ground-based (SST) and space-borne (Hinode) high-resolution solar data are analyzed in a quiet Sun region displaying negative polarity small-scale magnetic concentrations and a cluster of bright points observed in G-band and Ca II H images. The studied region is characterized by the presence of two small-scale convective vortex-type plasma motions, one of which appears to be affecting the dynamics of both, magnetic features and bright points in its vicinity and therefore the main target of our investigations. We followed the evolution of bright points, intensity variations at different atmospheric heights and magnetic evolution for a set of interesting selected regions. A description of the evolution of the photospheric plasma motions in the region nearby the convective vortex is shown, as well as some plausible cases for convective collapse detected in Stokes profiles.
arXiv comment9 figures
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- Power-Law Statistics Of Driven Reconnection In The Magnetically Closed Corona
- Convectively driven sinks and magnetic fields in the quiet Sun
- Dynamics of small-scale convective motions
- Photospheric downflows observed with SDO/HMI, HINODE, and an MHD simulation
- Flux emergence event underneath a filament