论文标题

帕克太阳能探测器在2018年11月5日观察到的小型瞬态的形态重建

Morphological Reconstruction of a Small Transient Observed by Parker Solar Probe on 2018 November 5

论文作者

Wood, Brian E., Hess, Phillip, Howard, Russell A., Stenborg, Guillermo, Wang, Yi-Ming

论文摘要

2018年11月5日,大约在Parker太阳能探头(PSP)的第一次紧密近乎围栏通道之前的大约24小时,冠状质量弹射(CME)进入了太阳能探针(WISPR)仪器的内部探测器的视野,该仪器在PSP上,PSP上的PSP上,其轨迹的北端是CME Off the CME Off the Edge the Edge of the CME Off Off the Edge of top the CME的北端。我们将这一事件与太阳能和地球观测站(SOHO)上的冠状动脉(SOHO)以及太阳陆地关系天文台任务(Stereo-a)的一个组成部分相结合,从1个AU观察到了1个AU。这使我们能够对CME结构进行第一个三维重建,考虑到这两个观测值都非常接近太阳,并且在1 AU处的两个观测值都非常接近。从1 AU看,CME可能很小且类似于喷射,但是PSP/WISPR的近距离角度表明,它不是本质上的喷射样,而是具有与通量绳形态一致的结构。根据其在SOHO和Stereo-A图像中的外观,该事件属于瞬态的“流媒体斑点”类,但其运动学行为非常不寻常,比以前研究的斑点更加冲动。

On 2018 November 5, about 24 hours before the first close perihelion passage of Parker Solar Probe (PSP), a coronal mass ejection (CME) entered the field of view of the inner detector of the Wide-field Imager for Solar PRobe (WISPR) instrument onboard PSP, with the northward component of its trajectory carrying the leading edge of the CME off the top edge of the detector about four hours after its first appearance. We connect this event to a very small jet-like transient observed from 1 au by coronagraphs on both the SOlar and Heliospheric Observatory (SOHO) and the A component of the Solar TErrestrial RElations Observatory mission (STEREO-A). This allows us to make the first three-dimensional reconstruction of a CME structure considering both observations made very close to the Sun and images from two observatories at 1 au. The CME may be small and jet-like as viewed from 1 au, but the close-in vantage point of PSP/WISPR demonstrates that it is not intrinsically jet-like, but instead has a structure consistent with a flux rope morphology. Based on its appearance in the SOHO and STEREO-A images, the event belongs in the "streamer blob" class of transients, but its kinematic behavior is very unusual, with a more impulsive acceleration than previously studied blobs.

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