论文标题

1806年6月16日的日食期间的太阳能电晕:道尔顿最低冠状结构的图形证据

The Solar Corona during the Total Eclipse on 16 June 1806: Graphical Evidence of the Coronal Structure during the Dalton Minimum

论文作者

Hayakawa, Hisashi, Owens, Mathew J., Lockwood, Michael, Sôma, Mitsuru

论文摘要

可见的冠状结构,尤其是冠状彩带的空间演化,提供了有关太阳能磁性活动和基础太阳能发电机的间接信息。它们在整个Maunder最低限度的总叶片期间观察到的明显没有结构,这被解释为在现代周期期间与太阳能磁场发生显着变化的证据。最新的道尔顿最低限度可获得的Eclipse观察结果可能能够提供进一步的信息,在最近的周期和最低限度的情况下,黑子活动是在下天的活动。在这里,我们在6月16日在道尔顿最低限度期间,在1806年的日食总太阳日食的两个图形记录。这些记录显示了内环周围的大量光线和彩流器。该环的宽度为〜0.44 r_s,彩流器的长度超过11.88 r_s。结合Spicules或隆华的记录,这些Eclipse记录在视觉上将道尔顿的最小值与Maunder的最低限度形成鲜明对比,并在其冠状结构方面进行了最低限度,并基于黑子观测来支持现有的讨论。这些Eclipse记录与建模的开放太阳通量和大多数纬度的重建慢太阳风中的太阳周期阶段广泛一致。

Visible coronal structure, in particular the spatial evolution of coronal streamers, provides indirect information about solar magnetic activity and the underlying solar dynamo. Their apparent absence of structure observed during the total eclipses of throughout the Maunder Minimum has been interpreted as evidence of a significant change in the solar magnetic field from that during modern cycles. Eclipse observations available from the more recent Dalton Minimum may be able to provide further information, sunspot activity being between the levels seen during recent cycles and in the Maunder Minimum. Here, we show and examine two graphical records of the total solar eclipse on 1806 June 16, during the Dalton Minimum. These records show significant rays and streamers around an inner ring. The ring is estimated to be ~ 0.44 R_S in width and the streamers in excess of 11.88 R_S in length. In combination with records of spicules or prominences, these eclipse records visually contrast the Dalton Minimum with the Maunder Minimum in terms of their coronal structure and support the existing discussions based on the sunspot observations. These eclipse records are broadly consistent with the solar cycle phase in the modelled open solar flux and the reconstructed slow solar wind at most latitudes.

扫码加入交流群

加入微信交流群

微信交流群二维码

扫码加入学术交流群,获取更多资源