...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Geophysical Research, A. Space Physics: JGR >On the generation and topology of flux transfer events
【24h】

On the generation and topology of flux transfer events

机译：通量的拓扑生成和转移事件

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We use resistive magnetohydrodynamics (MHD) simulations to investigate thegeneration and topology of flux transfer events (FTEs) at Earth's dayside magnetopauseunder generic southward interplanetary magnetic field (IMF) conditions. We focus onthree questions: (1) Can FTEs form spontaneously under steady solar wind conditions?(2) What is the role of magnetic reconnection in the generation of FTEs? (3) What effectdo FTEs have on the magnetopause magnetic field topology? We find that in thesimulations, FTEs form spontaneously under steady solar wind conditions. In contrast tothe multiple X line model of Raeder (2006), dipole tilt is not required to produce FTEsin resistive MHD simulations. Further, FTEs are generated by flow vortices which beginto grow well before magnetic reconnection changes the magnetopause magnetic fieldtopology. FTEs form under steady southward IMF conditions but not under steadynorthward IMF conditions, suggesting that the magnetopause becomes unstable when theIMF turns southward. In our simulations, this instability appears to be triggered by amovement of the flow stagnation point away from the magnetic separator, which modifiesthe subsolar stagnation point flow, thereby rendering it unstable. Finally, examinationof the internal magnetic structure of the simulated FTEs reveals a complex topologyresulting from multiple separator bifurcations driven by plasma flows within the FTEs.
机译：我们使用电阻磁流体动力学(磁流体动力)调查thegeneration和模拟拓扑(fte)通量传输事件地球的光面magnetopauseunder通用向南行星际磁场(IMF)条件。招聘形式自发在稳定的太阳风条件?(2)什么是磁力的作用重新连接在招聘的一代吗?effectdo招聘对磁层磁场场拓扑?招聘形式自发在稳定的太阳风条件。雷德尔模型(2006),偶极子倾斜需要生产FTEsin电阻磁流体动力模拟。在磁漩涡,开始生长重新连接磁层磁场的变化fieldtopology。国际货币基金组织的条件但不低于steadynorthward国际货币基金组织(IMF)条件,表明磁层向南当theIMF变得不稳定。我们的模拟,这似乎是不稳定由amovement流的停滞点离磁分离器,它modifiesthe现世的驻点流动,从而使其不稳定。examinationof内部磁结构模拟招聘揭示了一个复杂topologyresulting从多个分隔符分岔的等离子体流内

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号