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Microscale Processes Determining Macroscale Evolution of Magnetic Flux Tubes along Earth's Magnetopause

  • K. J. Hwang*
  • , J. L. Burch
  • , C. T. Russell
  • , E. Choi
  • , K. Dokgo
  • , R. C. Fear
  • , S. A. Fuselier
  • , S. M. Petrinec
  • , D. G. Sibeck
  • , H. Hasegawa
  • , H. Fu
  • , M. Oieroset
  • , C. P. Escoubet
  • , B. L. Giles
  • , Y. Khotyaintsev
  • , D. B. Graham
  • , D. J. Gershman
  • , C. J. Pollock
  • , R. E. Ergun
  • , R. B. Torbert
  • J. Broll
*此作品的通讯作者
  • Southwest Research Institute
  • University of California at Los Angeles
  • University of Southampton
  • Lockheed Martin
  • NASA Goddard Space Flight Center
  • JAXA Institute of Space and Astronautical Science
  • University of California at Berkeley
  • ESA/ESTEC
  • Box 537
  • Denali Scientific, LLC
  • University of Colorado Boulder
  • University of New Hampshire
  • Boston University

科研成果: 期刊稿件文章同行评审

摘要

An important process affecting solar wind-Earth's magnetosphere coupling is nonsteady dayside magnetic reconnection, observationally evidenced by a flux transfer event (FTE) that shows a bipolar variation of the magnetic field component normal to the magnetopause. FTEs often consist of two interlinked flux tubes, but, local kinetic processes between the flux tubes are not understood in the context of the FTE structuring, evolution, and impact. An FTE observed by the Magnetospheric Multiscale mission on 2017 December 18 consisted of two flux tubes of different topology. One includes field lines with ends connected to the northern and southern hemispheres while the other includes field lines with both ends connected to the magnetosheath. Reconnection occurring at the flux-tube interface indicates how interacting flux tubes evolve into a flux rope with helical magnetic topology that is either closed or open. This study demonstrates a new aspect of how micro- to meso-scale dynamics occurring within FTEs determines their macroscale characteristics and evolution.

源语言英语
文章编号26
期刊Astrophysical Journal
914
1
DOI
出版状态已出版 - 10 6月 2021

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