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10cm 全日面矢量磁场望远镜

“ 日地空间天气预报的物理基础与模式研究” ——973 联测会议. 10cm 全日面矢量磁场望远镜. 国家天文台 怀柔太阳观测基地. 10 cm 全日面矢量磁场望远镜. (Zhang et al. 2007). 磁场望远镜. 主要性能指标. 具体数据参数如下 : 物镜口径: 10 cm 工作谱线: 5324.19 Å 双折射滤光器:带宽 0.1 Å , ±0.5 Å 范围可调; 全视场大于: ±16′ CCD : 992 × 1024 , ~2 " /pix

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10cm 全日面矢量磁场望远镜

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  1. “日地空间天气预报的物理基础与模式研究”——973联测会议“日地空间天气预报的物理基础与模式研究”——973联测会议 10cm 全日面矢量磁场望远镜 国家天文台 怀柔太阳观测基地

  2. 10 cm 全日面矢量磁场望远镜 (Zhang et al. 2007) 磁场望远镜

  3. 主要性能指标 具体数据参数如下: • 物镜口径: 10 cm • 工作谱线: 5324.19 Å • 双折射滤光器:带宽0.1 Å,±0.5 Å范围可调; • 全视场大于: ±16′ • CCD: 992×1024,~2"/pix • 时间分辨率: ~10 min • 磁场分辨率: 纵场5 G;横场小于150 G。

  4. 大气视宁度好(256帧叠加) ,偏振信号空间分辨率优于4" 。 MC2 MC1 虚线是观测数据;实线是高斯拟合数据 MC1: FWHM ≈ 3.76" MC2: FWHM ≈ 3.74"

  5. 全日面矢量磁场数据处理中主要问题 (Su et al. 2007; Wang et al. 2008, 2010) (1)圆偏振信号与线偏振信号 之间的交叉串绕问题; (2)大尺度太阳较差自转的谱线漂移问题; (3)滤光器宽视场问题; (4)光强→偏振信号串扰与宽视场综合效应

  6. -0.06Å +0.06Å V/I Q/I U/I

  7. 全日面矢量磁图的纵向分量(右)和SOHO空间太阳卫星上的MDI (左) 磁图比较 (Zhang et al. 2007)

  8. 确定全日面矢量磁图局部区域中沿截线上横向磁场强度确定全日面矢量磁图局部区域中沿截线上横向磁场强度

  9. 沿太阳活动区中截线上横向磁场强度分布 (Zhang et al. 2007) 光球横向磁场分辨率  150高斯

  10. 延伸的物理量—非势参量 (1)磁剪切; (2)视向磁场梯度; (3)磁中性线长度; (4)视向电流; (5)视向电流螺度; (6)磁螺度向日冕传输率; (7)大尺度感应电场、磁张力

  11. 谢谢各位老师!

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