论文标题

冠状孔中的磁通量出现

Magnetic Flux Emergence in a Coronal Hole

论文作者

Palacios, J., Utz, D., Hofmeister, S., Krikova, K., Gömöry, P., Kuckein, C., Denker, C., Verma, M., Manrique, S. J. González, Rozo, J. I. Campos, Koza, J., Temmer, M., Veronig, A., Diercke, A., Kontogiannis, I., Cid, C.

论文摘要

包括日本hinode任务(Hop〜338,20 \, - \,2017年9月30日),Gregor Solar Teescope和\ textit {vextit {vicuum Tower塔望远镜}(VTT)的联合运动(Hop〜338,20 \, - \, - \, - 在这项研究中,我们关注冠状孔区域目标。 2017年9月24日至9月24日,一个非常延伸的非极性冠状孔出现了通量出现的斑块,这导致冠状孔的整体面积减少。这些通量出现斑块侵蚀了冠状孔,并将该区域转化为更安静的阳性区域,从而使双极磁性结构起着重要作用。相反,通量取消导致相对性磁场的减少,并增加了冠状​​孔区域的增加。 使用\ textIt {Helioseismic and Magnity Imager}(HMI)(HMI)和\ textIt {大气成像组装}(AIA)在\ textit fextit {solar Dynamers vernation {sodo {sdo)上研究了其他全球冠状孔特性,包括相关磁通量的演变和EUV中上述面积演变。太阳风显示参数的星际介质参数与冠状孔的存在兼容。此外,在这些参数中找到了特定的瞬态。

A joint campaign of various space-borne and ground-based observatories, comprising the Japanese Hinode mission (HOP~338, 20\,--\,30~September 2017), the GREGOR solar telescope, and the \textit{Vacuum Tower Telescope} (VTT), investigated numerous targets such as pores, sunspots, and coronal holes. In this study, we focus on the coronal hole region target. On 24~September 2017, a very extended non-polar coronal hole developed patches of flux emergence, which contributed to the decrease of the overall area of the coronal hole. These flux emergence patches erode the coronal hole and transform the area into a more quiet-Sun-like area, whereby bipolar magnetic structures play an important role. Conversely, flux cancellation leads to the reduction of opposite-polarity magnetic fields and to an increase in the area of the coronal hole. Other global coronal hole characteristics, including the evolution of the associated magnetic flux and the aforementioned area evolution in the EUV, are studied using data of the \textit{Helioseismic and Magnetic Imager} (HMI) and \textit{Atmospheric Imaging Assembly} (AIA) onboard the \textit{Solar Dynamics Observatory} (SDO). The interplanetary medium parameters of the solar wind display parameters compatible with the presence of the coronal hole. Furthermore, a particular transient is found in those parameters.

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