SM13F-4231:
Solar Wind Entry into the magnetosphere lobes and its Related Auroral activities
Monday, 15 December 2014
Quanqi Shi1, Xiaochen Gou1, Bagrat G Mailyan1, Romain Maggiolo2, Yongliang Zhang3, Suiyan Fu4, Qiugang Zong4, George K Parks5, Zuyin Pu6 and Malcolm Wray Dunlop7, (1)Shandong University at Weihai, Weihai, China, (2)Belgian Institute for Space Aeronomy, Brussels, Belgium, (3)The Johns Hopkins University Applied Physics Laboratory, Laurel, MD, United States, (4)Peking University, School of Earth and Space Sciences, Beijing, China, (5)University of California Berkeley, Berkeley, CA, United States, (6)Peking University, Beijing, China, (7)Science and Technology Facilities Council, Didcot, United Kingdom
Abstract:
Using Cluster multi-spacecrafts observation between August to October each year from 2002 to 2004, Shi, et al. [2013] have reported an unexpected discovery of regions of solar wind entry into the Earth’s high-latitude magnetospheric lobes where the solar wind plasmas may penetrate into magnetosphere through high-latitude magnetic reconnection when the interplanetary magnetic field (IMF) is northward. From statistical analysis, they found that the IMF Bx component may influence the solar wind entry into the magnetosphere by changing the occurring conditions of high-latitude magnetic reconnection. Based on their studies, in this paper we use another period of Cluster data which is between January to April each year from 2001 to 2006 to do a further study. As a result, the influence of the IMF Bx component is consistent with the results from [Shi, et al. 2013]. We find that the IMF By component affects the events along with the IMF Bx component, which is consistent with the Parker Spiral of the IMF. We have also studied some transpolar arc observations in correlation with the solar wind entry events. The properties of entry plasma, electron and ion properties associated with aurorae are examined using multiple spacecraft data (Cluster, TIMED, DMSP, IMAGE and POLAR etc) , as can be seen from another work presented this meeting by Mailyan et al.
