| Magneto-induced Line Broadening of Magneto-sensitive Lines in Solar Magnetized Atmospheres |
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| 引用本文： | Zhong-Quan Qu,Shuai Wang,Cheng-Lin Xu,XiaoYu Zhang,Ming-Guo Sun and Chun-Lan Jin National Astronomical Observatories/Yunnan Astronomical Observatory,Chinese Academy of Sciences,Kunming 650011, zqqu@vip.km169.net Graduate School of the Chinese Academy of Sciences,Beijing 100039. Magneto-induced Line Broadening of Magneto-sensitive Lines in Solar Magnetized Atmospheres[J]. 中国天文和天体物理学报, 2005, 5(4): 426-432 |
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| 作者姓名： | Zhong-Quan Qu Shuai Wang Cheng-Lin Xu XiaoYu Zhang Ming-Guo Sun and Chun-Lan Jin National Astronomical Observatories/Yunnan Astronomical Observatory Chinese Academy of Sciences Kunming 650011 zqqu@vip.km169.net Graduate School of the Chinese Academy of Sciences Beijing 100039 |
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| 作者单位： | Zhong-Quan Qu，Shuai Wang，Cheng-Lin Xu，XiaoYu Zhang，Ming-Guo Sun and Chun-Lan Jin National Astronomical Observatories/Yunnan Astronomical Observatory，Chinese Academy of Sciences，Kunming 650011; zqqu@vip.km169.net Graduate School of the Chinese Academy of Sciences，Beijing 100039 |
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| 基金项目： | Supported by the National Natural Science Foundation of China. |
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| 摘 要： | We analyze the spectral line broadening of those magneto-sensitive lines in solar magnetized atmospheres. The broadening at the line wings is due to the increase of the effective width of energy levels involved in Zeeman splitting, and the broadening at the line core also originated in Zeeman splitting under the condition that the Zeeman components are mixed. Therefore, the magnetoinduced or Zeeman broadening take effects on the whole line. The observed Stokes parameter data in a sunspot and outside it acquired by Solar Stokes Spectrum Telescope (S3T) are analyzed for the demonstration of this mechanism, and the Zeeman broadening rates are calculated for FeI6302.5 under some assumptions. Our result shows that the broadening is increased as the magnetic field strength becomes stronger, but the rate of increase at the line core is decreased as the field strength increases, while the rate at the wing does not show such an obvious regularity. The broadening is more effective in the line core than in the wings.
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| 关 键 词： | 磁场 太阳线 大气 磁化现象 |
Magneto-induced Line Broadening of Magneto-sensitive Lines in Solar Magnetized Atmospheres |
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| Zhong-Quan Qu Shuai Wang Cheng-Lin Xu Xiao-Yu Zhang Ming-Guo Sun Chun-Lan Jin. Magneto-induced Line Broadening of Magneto-sensitive Lines in Solar Magnetized Atmospheres[J]. Chinese Journal of Astronomy and Astrophysics, 2005, 5(4): 426-432 |
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| Authors: | Zhong-Quan Qu Shuai Wang Cheng-Lin Xu Xiao-Yu Zhang Ming-Guo Sun Chun-Lan Jin |
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| Affiliation: | [1]National Astronomical Observatories/Yunnan Astronomical Observatory, Chinese Academyof Sciences, Kunming 650011 [2]Graduate School of the Chinese Academy of Sciences, Beijing 100039 |
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| Abstract: | We analyze the spectral line broadening of those magneto-sensitive lines in solar magnetized atmospheres. The broadening at the line wings is due to the increase of the effective width of energy levels involved in Zeeman splitting, and the broadening at the line core also originated in Zeeman splitting under the condition that the Zeeman components are mixed. Therefore, the magnetoinduced or Zeeman broadening take effects on the whole line. The observed Stokes parameter data in a sunspot and outside it acquired by Solar Stokes Spectrum Telescope (S3T) are analyzed for the demonstration of this mechanism, and the Zeeman broadening rates are calculated for FeI6302.5 under some assumptions. Our result shows that the broadening is increased as the magnetic field strength becomes stronger, but the rate of increase at the line core is decreased as the field strength increases, while the rate at the wing does not show such an obvious regularity. The broadening is more effective in the line core than in the wings. |
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| Keywords: | sunspots - line: profiles-magnetic fields - radiative transfer-polarization |
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