Foreshock-like density cavity in the outflow region of magnetotail reconnection
文献类型：会议论文
| 作者 | Cai CL(蔡春林); Dandouras, I.; Reme, H.; Cao JB(曹晋宾); Zhou GC(周国成); Parks, G. K.; Fontaine, D. |
| 出版日期 | 2009 |
| 会议名称 | 12th International Symposium on Equatorial Aeronomy (ISEA-12) |
| 会议日期 | 2009 |
| 会议地点 | Crete, GREECE |
| 关键词 | Magnetospheric physics Magnetotail Space plasma physics Charged particle motion and acceleration Magnetic reconnection |
| 页码 | 3043-3053 |
| 通讯作者 | 北京8701信箱 |
| 英文摘要 | During Cluster spacecraft crossing of the magnetotail, a novel density depleted cavity in association with magnetic compressions in the outflow region of reconnection was observed. It contains intense reflected field-aligned particles, which are produced by a generation mechanism similar to that of the terrestrial foreshock, and hence manifests a foreshock-like morphology. In this cavity, reflected field-aligned proton beams were observed and simultaneously the feature of magnetic-mirror loss-cone proton distributions were found. Magnetic field fluctuations, especially quasi-monochromatic oscillations, were recorded. Both the leading egde and the ULF wave boundary of the ion foreshock are identified from the time sequence of proton and magnetic field observations. Just upstream of the leading egde of the ion foreshock, reflected field-aligned electrons were detected, whose distribution has a narrow bump-on-tail pattern. However, close to the shock front, reflected electrons with a broad bump-on-tail pattern was measured. These two different manifestations of reflected electrons reveal the differences in their microscopic physics of the reflecting process. Moreover, a part of incident ions was further accelerated in the cavity due to trans-time magnetic pumping which provides another possible mechanism in the multi-step acceleration processes in reconnection. |
| 收录类别 | SCI ; CPCI |
| 会议网址 | |
| 会议录 | Annales geophysicae
 |
| 会议录出版者 | Copernicus Publications |
| 学科主题 | 空间物理 |
| 会议录出版地 | KATHLENBURG-LINDAU |
| 语种 | 英语 |
| ISBN号 | 0992-7689 |
| 源URL | [http://ir.cssar.ac.cn/handle/122/917]  |
| 专题 | 国家空间科学中心_空间科学部 |
| 推荐引用方式 GB/T 7714 |
Cai CL,Dandouras, I.,Reme, H.,et al. Foreshock-like density cavity in the outflow region of magnetotail reconnection[C]. 见:12th International Symposium on Equatorial Aeronomy (ISEA-12). Crete, GREECE. 2009. |
入库方式： OAI收割
来源：国家空间科学中心
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