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太阳对流区的南流是每个半球的单个细胞
Laurent Gizon1,2,3, Robert H Cameron4, Majid Pourabdian4,2
1Max-Planck-Institut für Sonnensystemforschung, 37077 Göttingen, Germany. gizon@mps.mpg.de.
Science (New York, N.Y.)
|June 27, 2020
概括
科学家们使用太阳地震学绘制了太阳的地下流动图,揭示了朝赤道的单细胞午线流动. 这一发现支持解释太阳黑子漂移的流量运输动力模型.
科学领域:
- 太阳物理
- 天文地震学
- 血动力学
背景情况:
- 太阳的磁场源自地表下等离子体的对流.
- 在太阳周期中,太阳斑出现的度向赤道迁移.
- 对于太阳能发电机模型来说, 了解正午流是关键.
研究的目的:
- 在两个太阳周期 (1996-2019年) 中推断太阳的午线流 (度和辐射).
- 在太阳磁场生成和太阳黑子迁移中研究午线流的作用.
主要方法:
- 使用日震学分析地下等离子体运动.
- 使用两个独立的数据来源,对2001-2011年进行交叉验证.
主要成果:
- 证实每一个太阳半球的单细胞午线流动模式.
- 在对流区底部 (在45°度处) 测量到赤道的等离子体传输.
- 两个数据源之间在重叠期间的一致性.
结论:
- 观察到的午线流支持流量运输动力发电机模型.
- 南流是解释日点出现度向赤道漂移的关键组成部分.
- 提供太阳能发电机内的关键过程的观测证据.
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