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arXiv 1004.1885astro-ph.SR
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宁静太阳中的磁亮点

Magnetic bright points in the quiet Sun

J. Sanchez Almeida, J. A. Bonet, B. Viticchie, D. Del Moro

摘要:

我们提出了一个视觉确定的数量的亮点(BP)存在于安静的太阳,这是结构,虽然跟踪强烈的千克磁浓度。测量是基于0.1角秒的角分辨率G波段电影获得的瑞典太阳望远镜在太阳盘中心。我们发现0.97 BPs/Mm^2,比之前的任何估计值都大3倍。它相当于每个太阳颗粒1.2个BPs。根据分割的细节,BP覆盖太阳表面的0.9%至2.2%。假设它们的场强为1.5 kG,检测到的BPs对太阳磁通量的贡献具有13 G和33 G之间的无符号通量密度。如果网络和网络间区域分别计算,它们分别包含2.2 BP/Mm^2和0.85 BP/Mm^2。

英文摘要:

We present a visual determination of the number of bright points (BPs) existing in the quiet Sun, which are structures though to trace intense kG magnetic concentrations. The measurement is based on a 0.1 arcsec angular resolution G-band movie obtained with the Swedish Solar Telescope at the solar disk center. We find 0.97 BPs/Mm^2, which is a factor three larger than any previous estimate. It corresponds to 1.2 BPs per solar granule. Depending on the details of the segmentation, the BPs cover between 0.9% and 2.2% of the solar surface. Assuming their field strength to be 1.5 kG, the detected BPs contribute to the solar magnetic flux with an unsigned flux density between 13 G and 33 G. If network and inter-network regions are counted separately, they contain 2.2 BPs/Mm^2 and 0.85 BPs/Mm^2, respectively.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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