arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2109.12263astro-ph.SR
收藏

2017年和2019年太阳总黑子期间观测到的日冕偏振

Polarization of the Corona Observed During the 2017 and 2019 Total Solar Eclipses

Yoichiro Hanaoka, Yoshiaki Sakai, Koichi Takahashi

摘要:

我们在2017年8月21日和2019年7月2日发生的日全食期间对白光日冕进行了偏振观测,并成功地在两个不同的地点获得了两次日食的数据。在消除天空背景后,我们导出了K+F日冕的亮度、偏振亮度和偏振度,从临边上方到大约4 $R_\odot$。此外,我们隔离的K-和F-电晕与合理程度的极化的K-电晕。覆盖了大约4个$R_\odot$的视场使我们能够将导出的亮度和偏振与广泛的其他观测结果进行比较。比较的结果显示出显着的分散性,而一些观察与我们的结果呈现出很好的一致性,其他的表现出系统的差异。

英文摘要:

We carried out polarimetric observations of the white-light corona during the total solar eclipses that occurred on 2017 August 21 and 2019 July 2, and successfully obtained data at two different sites for both eclipses. After eliminating the sky background, we derived the brightness, polarization brightness, and degree of the polarization of the K+F corona from just above the limb to approximately 4 $R_\odot$. Furthermore, we isolated the K- and F-corona with plausible degree of polarization of the K-corona. The field of view covering up to approximately 4 $R_\odot$ enabled us to compare the derived brightness and polarization with a wide range of other observations. The results of the comparison show significant scatter; while some of the observations present very good coincidence with our results, the other ones exhibit systematic discrepancy.

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。

↑