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Multi-spacecraft Observations of the Coronal and Interplanetary Evolution of a Solar Eruption Associated with Two Active Regions View all abstracts by submitter

Huidong Hu   Submitted: 2022-10-19 01:33

We investigate the coronal and interplanetary evolution of a coronal mass ejection (CME) launched on 2010 September 4 from a source region linking two active regions (ARs), 11101 and 11103, using extreme ultraviolet imaging, magnetogram, white-light, and in situ observations from SDO, STEREO, SOHO, VEX, and Wind. A potential-field source-surface model is employed to examine the configuration of the coronal magnetic field surrounding the source region. The graduated cylindrical shell model and a triangulation method are applied to determine the kinematics of the CME in the corona and interplanetary space. From the remote sensing and in situ observations, we obtain some key results: (1) the CME was deflected in both the eastward and southward directions in the low corona by the magnetic pressure from the two ARs, and possibly interacted with another ejection, which caused that the CME arrived at VEX that was longitudinally distant from the source region; (2) although VEX was closer to the Sun, the observed and derived CME arrival times at VEX are not earlier than those at Wind, which suggests the importance of determining both the frontal shape and propagation direction of the CME in interplanetary space; and (3) the ICME was compressed in the radial direction while the longitudinal transverse size was extended.

Authors: Hu, Huidong; Liu, Ying D.; Wang, Rui ; Zhao, Xiaowei ; Zhu, Bei; Yang, Zhongwei
Projects: Other,SDO-AIA,SDO-HMI,SoHO-LASCO,Wind

Publication Status: The Astrophysical Journal, Volume 840, Issue 2, article id. 76, 10 pp. (2017).
Last Modified: 2022-10-19 15:41
Go to main E-Print page  Effects of Coronal Density and Magnetic Field Distributions on a Global Solar EUV Wave  Sun-to-Earth Characteristics of the 2012 July 12 Coronal Mass Ejection and Associated Geo-effectiveness  Edit Entry  Download Preprint  Delete Entry 

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