Small-Scale Magnetic-Flux Emergence Observed with Hinode Solar Optical Telescope

作者: Bruce Lites , Kenichi Otsuji , Alan M. Title , Saku Tsuneta , Reizaburo Kitai

DOI: 10.1093/PASJ/59.SP3.S649

关键词:

摘要: We observed small-scale magnetic-flux emergence in a sunspot moat region by the Solar Optical Telescope (SOT) aboard Hinode satellite. analyzed filtergram images at wavelengths of Fe 6302 A, G band, and Ca II H. In Stokes I emerging magnetic flux was recognized as dark lanes. they showed to be their shapes almost same images. These fluxes appeared filaments H StokesV A pairs opposite polarities footpoints each filament. concentrations were identified correspond bright points band/Ca From an analysis time-sliced diagrams, we derived following properties flux, which are consistent with those previous studies: (1) Two separate other speed 4.2 km s 1 during initial phase evolution, decrease about 10 minutes later. (2) appear simultaneously formation lanes observational cadence 2 minutes. (3) The lifetime band is 8 minutes, while that filament 12 An interesting phenomena observed, tube expanded laterally photosphere 3.8 . discussion on horizontal expansion given refernce simulation studies.

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