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首页> 外文期刊>PASJ: Publications of the Astronomical Society of Japan >Small-scale magnetic-flux emergence observed with Hinode Solar Optical Telescope
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Small-scale magnetic-flux emergence observed with Hinode Solar Optical Telescope

机译：Hinode太阳光学望远镜观测到小规模的磁通量出现

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We observed small-scale magnetic-flux emergence in a sunspot moat region by the Solar Optical Telescope (SOT) aboard the Hinode satellite. We analyzed filtergram images observed at wavelengths of Fe 6302 angstrom, G band, and Ca II H. In Stokes I images of Fe 6302 angstrom, emerging magnetic flux was recognized as dark lanes. In the G band, they showed to be their shapes almost the same as in Stokes I images. These magnetic fluxes appeared as dark filaments in Ca II H images. Stokes V images of Fe 6302 angstrom showed pairs of opposite polarities at footpoints of each filament. These magnetic concentrations were identified to correspond to bright points in G band/Ca II H images. From an analysis of time-sliced diagrams, we derived the following properties of emerging flux, which are consistent with those of previous studies: (1) Two footpoints separate each other at a speed of 4.2 km s(-1) during the initial phase of evolution, and decrease to about 1 km s(-1) 10 minutes later. (2) Ca II H filaments appear almost simultaneously with the formation of dark lanes in Stokes I in an observational cadence of 2 minutes. (3) The lifetime of the dark lanes in the Stokes I and G band is 8 minutes, while that of Ca filament is 12 minutes. An interesting phenomena was observed, that an emerging flux tube expanded laterally in the photosphere with a speed of 3.8 km s(-1). A discussion on the horizontal expansion of the flux tube is given with refernce to previous simulation studies.
机译：我们通过日诺卫星上的太阳光学望远镜（SOT）观察到太阳黑子护城河区域出现了小规模的磁通量。我们分析了在Fe 6302埃，G波段和Ca II H的波长处观察到的滤波图图像。在Fe 6302埃的斯托克斯I图像中，新兴的磁通量被识别为暗线。在G波段中，它们显示出的形状几乎与Stokes I图像中的形状相同。这些磁通量在Ca II H图像中显示为暗丝。 Fe 6302埃的斯托克斯V图像在每根灯丝的脚点显示成对的相反极性。确定这些磁浓度对应于G波段/ Ca II H图像中的亮点。通过时间切片图的分析，我们得出了新兴通量的以下特性，这些特性与先前的研究相一致：（1）在初始阶段，两个脚点以4.2 km s（-1）的速度彼此分离演变，并在10分钟后降低到大约1 km s（-1）。 （2）在2分钟的观察中，Ca II H细丝几乎与斯托克斯I的黑线形成同时出现。 （3）Stokes I和G波段的暗线寿命为8分钟，而Ca灯丝的暗线寿命为12分钟。观察到一个有趣的现象，即出现的通量管在光球中横向扩展，速度为3.8 km s（-1）。参照先前的模拟研究对通量管的水平膨胀进行了讨论。

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