On the Relationship Between G-Band Bright Point Dynamics and Their Magnetic Field Strengths
On the Relationship Between G-Band Bright Point Dynamics and Their Magnetic Field Strengths
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G带亮点动力学及其磁场强度的关系
DOI：
10.1007/s11207-016-0889-y
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发表时间：
2016-04
期刊：
影响因子：
2.8
通讯作者：
Lin, Jiaben
中科院分区：
文献类型：
--
作者：
Feng, Song;Deng, Hui;Wang, Feng;Lin, Jiaben
G波段亮点（GBP）被认为是磁通量集中的良好表现。我们的目的是研究GBP的动力学性质和它们的纵向磁场强度之间的关系。利用G波段滤波图和窄带滤波成像仪（NFI）斯托克斯（Stokes）和日诺德/太阳光学望远镜（Hinode/Solar Optical Telescope）同时记录了高时空分辨率观测。GBP在G波段图像中自动识别和跟踪，并通过点对点方法从校准的NFI磁图中提取每个GBP对应的纵向磁场强度。在根据纵向磁场强度将GBP分为五组之后，我们分析了每组GBP的动力学。结果表明，随着纵向磁场强度的增加，GBP对应于其水平速度和运动范围的减少，以及通过显示更复杂的运动路径。这表明，磁场强度较弱的磁性元素沿着沿着较直的路径移动得更快、更远，而磁场强度较强的元素在较小区域内沿着更不规则的路径移动得更慢。不同纵向磁场强度的GBP的动力学行为可以解释为，较强的磁通浓度比较弱的更好地承受对流流动。
G-band bright points (GBPs) are regarded as good manifestations of magnetic flux concentrations. We aim to investigate the relation between the dynamic properties of GBPs and their longitudinal magnetic field strengths. High spatial and temporal resolution observations were recorded simultaneously with G-band filtergrams andNarrow-band Filter Imager(NFI) Stokesandimages withHinode/Solar Optical Telescope. The GBPs are automatically identified and tracked in the G-band images, and the corresponding longitudinal magnetic field strength of each GBP is extracted from the calibrated NFI magnetograms by a point-to-point method. After categorizing the GBPs into five groups by their longitudinal magnetic field strengths, we analyzed the dynamics of each group of GBPs. The results suggest that with increasing longitudinal magnetic field strengths of GBPs correspond to a decrease in their horizontal velocities and motion ranges as well as by showing more complex motion paths. This suggests that magnetic elements showing weaker magnetic field strengths move faster and farther along straighter paths, while stronger elements move more slowly in more erratic paths within a smaller region. The dynamic behaviors of GBPs with different longitudinal magnetic field strengths can be explained by that the stronger flux concentrations withstand the convective flows much better than weaker ones.
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表征安静太阳中 G 波段亮点的运动类型
影响因子：
1.8
作者：
Feng, Song;Deng, Hui;Lin, Jia-Ben;Wang, Feng
通讯作者：
Wang, Feng
DOI：
10.1088/0004-637x/810/2/88
发表时间：
2015-09
期刊：
The Astrophysical Journal
影响因子：
--
作者：
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通讯作者：
Yunfei Yang;K. Ji;Song Feng;H. Deng;Feng Wang;Jiaben Lin
影响因子：
2.8
作者：
B. Roberts
通讯作者：
B. Roberts
影响因子：
6.5
作者：
G. Vigeesh;G. Vigeesh;S. Hasan;Oskar Steiner
通讯作者：
G. Vigeesh;G. Vigeesh;S. Hasan;Oskar Steiner
DOI：
10.1088/0004-637x/727/1/17
发表时间：
2011-01
期刊：
The Astrophysical Journal
影响因子：
--
作者：
V. Fedun;S. Shelyag;R. Erdélyi
通讯作者：
V. Fedun;S. Shelyag;R. Erdélyi