arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2005.01238astro-ph.SRphysics.space-ph
收藏

从立体观测在白光中重建日风不均匀结构：日风瞬变的3D

Reconstructing solar wind inhomogeneous structures from stereoscopic observations in white-light: Solar wind transients in 3D

CAS Key Laboratory of Geospace Environment, Department of Geophysics and Planetary Sciences, University of Science and Technology of China（中国科学院空间环境重点实验室，地球与行星科学学院，中国科学技术大学）；CAS Center for Excellence in Comparative Planetology, University of Science and Technology of China（中国科学院比较行星学卓越创新中心，中国科学技术大学）；Mengcheng National Geophysical Observatory, University of Science and Technology of China（蒙城国家地球物理观测台，中国科学技术大学）；SIGMA Weather Group, State Key Laboratory of Space Weather, Center for Space Science and Applied Research, Chinese Academy of Sciences（SIGMA天气研究组，空间天气国家重点实验室，空间科学应用研究中心，中国科学院）；Solar Physics and Space Plasma Research Center, School of Mathematics and Statistics, University of Sheffield（太阳物理与空间等离子体研究中心，数学与统计学院，谢菲尔德大学）

Xiaolei Li, Yuming Wang, Rui Liu, Chenglong Shen, Quanhao Zhang, Shaoyu Lyu, Bin Zhuang, Fang Shen, Jiajia Liu, Yutian Chi

备注：
29 pages, 12 figures, 2 tables, to be published on Journal of Geophysical Research - Space Physics
阅读 PDF
arXiv 页面 ↗HTML 原文 ↗

AI总结：

通过立体观测白光图像，提出一种方法重建太阳风瞬变的三维结构，揭示日冕物质抛射的复杂三维形态。

摘要：

太阳风探测器-1（HI1）上的日球成像仪（STEREO）提供的白光图像提供了两个视角下太阳风瞬变在内日球层的二维（2D）全局视图。如何从这些二维图像中恢复瞬变的隐藏三维（3D）特征是一个引人入胜但具有挑战性的问题。在我们之前的工作（Li等，2018）中，开发了一种“相关性辅助”方法，用于基于两个STEREO航天器同时拍摄的HI1图像识别沿太阳-地球线传播的太阳风瞬变。在此，该方法被扩展到整个三维空间，以重建STEREO HI1摄像头共同视野中的太阳风瞬变。我们通过展示2010年4月3-4日的日冕物质抛射（CME）和三个小尺度团块的三维形状和传播方向，证明了该方法的能力。与某些正向建模方法相比，我们发现该方法在位置、角度宽度和传播方向方面是可靠的。基于我们的三维重建结果，揭示了2010年4月3日一个角扭曲、几乎南北向的CME，展示了CME三维结构的复杂性。

英文摘要：

White-light images from Heliospheric Imager-1 (HI1) onboard the Solar Terrestrial Relations Observatory (STEREO) provide 2-dimensional (2D) global views of solar wind transients traveling in the inner heliosphere from two perspectives. How to retrieve the hidden three-dimensional (3D) features of the transients from these 2D images is intriguing but challenging. In our previous work (Li et al., 2018), a 'correlation-aided' method is developed to recognize the solar wind transients propagating along the Sun-Earth line based on simultaneous HI1 images from two STEREO spacecraft. Here the method is extended from the Sun-Earth line to the whole 3D space to reconstruct the solar wind transients in the common field of view of STEREO HI1 cameras. We demonstrate the capability of the method by showing the 3D shapes and propagation directions of a coronal mass ejection (CME) and three small-scale blobs during 3-4 April 2010. Comparing with some forward modeling methods, we found our method reliable in terms of the position, angular width and propagation direction. Based on our 3D reconstruction result, an angular distorted, nearly North-South oriented CME on 3 April 2010 is revealed, manifesting the complexity of a CME's 3D structure.

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。

↑