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arXiv 0909.4463astro-ph.SR
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对Solar色球隐磁现象的两点认识

Two Suggestions to See the Hidden Magnetism of the Solar Chromosphere

J. Trujillo Bueno

摘要:

太阳磁场在出射的谱线辐射的偏振特征中留下了它们的指纹。这是通过各种相当不熟悉的物理机制发生的,而不仅仅是通过塞曼效应。特别是,磁场修改原子水平的偏振(人口不平衡和量子相干性),各向异性辐射泵浦过程中诱导的原子和分子的太阳大气。有趣的是,这种所谓的汉勒效应使我们能够在现有仪器的限制下“看到”塞曼效应所看不到的磁场。在这里,我认为,IR三重态的钙II和He I 10830的三重态将是非常合适的选择,通过光谱偏振观测从未来的空间望远镜,如JAXA的SOLAR-C任务的太阳色球层的磁性调查。

英文摘要:

Solar magnetic fields leave their fingerprints in the polarization signatures of the emergent spectral line radiation. This occurs through a variety of rather unfamiliar physical mechanisms, not only via the Zeeman effect. In particular, magnetic fields modify the atomic level polarization (population imbalances and quantum coherences) that anisotropic radiative pumping processes induce in the atoms and molecules of the solar atmosphere. Interestingly, this so-called Hanle effect allows us to "see" magnetic fields to which the Zeeman effect is blind within the limitations of the available instrumentation. Here I argue that the IR triplet of Ca II and the He I 10830 Åmultiplet would be very suitable choices for investigating the magnetism of the solar chromosphere via spectropolarimetric observations from a future space telescope, such as JAXA's SOLAR-C mission.

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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