In Situ Observation of Magnetic Reconnection Between an Earthward Propagating Flux Rope and the Geomagnetic Field

H. Y. Man; M. Zhou; X. H. Deng; H. S. Fu; Z. H. Zhong; Z. Z. Chen; C. T. Russell; R. J. Strangeway; W. R. Paterson; B. L. Giles; P. A. Lindqvist; R. E. Ergun; J. L. Burch

doi:10.1029/2018GL079778

In Situ Observation of Magnetic Reconnection Between an Earthward Propagating Flux Rope and the Geomagnetic Field

H. Y. Man
, M. Zhou^*
, X. H. Deng
, H. S. Fu
, Z. H. Zhong
, Z. Z. Chen
, C. T. Russell
, R. J. Strangeway
, W. R. Paterson
, B. L. Giles
, P. A. Lindqvist
, R. E. Ergun
, J. L. Burch

^*此作品的通讯作者

空间与地球科学学院

Nanchang University
University of California at Los Angeles
NASA Goddard Space Flight Center
KTH Royal Institute of Technology
University of Colorado Boulder
Southwest Research Institute

科研成果: 期刊稿件 › 文章 › 同行评审

48 引用（Scopus）

摘要

It has been proposed that, in the near-Earth magnetotail, earthward propagating flux ropes can merge with the Earth's dipole magnetic field and dissipate its magnetic energy. However, the reconnection diffusion region related to this process has not been identified. Here we report the first in situ observation of magnetic reconnection between an earthward propagating flux rope and the closed magnetic field lines connecting to Earth. Magnetospheric Multiscale (MMS) spacecraft crossed a vertical current sheet between the leading edge of the flux rope (negative B_z) and the geomagnetic field (positive B_z). The subion-scale current sheet, super-Alfvénic electron outflow, Hall magnetic and electric field, conversion of magnetic energy to plasma energy (J·E > 0), and magnetic null were observed during the crossing. All the above signatures indicate that MMS detected the reconnection diffusion region. This result is also relevant to other planets with intrinsic magnetosphere.

源语言	英语
页（从-至）	8729-8737
页数	9
期刊	Geophysical Research Letters
卷	45
期	17
DOI	https://doi.org/10.1029/2018GL079778
出版状态	已出版 - 16 9月 2018

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10.1029/2018GL079778

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Man, H. Y., Zhou, M., Deng, X. H., Fu, H. S., Zhong, Z. H., Chen, Z. Z., Russell, C. T., Strangeway, R. J., Paterson, W. R., Giles, B. L., Lindqvist, P. A., Ergun, R. E., & Burch, J. L. (2018). In Situ Observation of Magnetic Reconnection Between an Earthward Propagating Flux Rope and the Geomagnetic Field. Geophysical Research Letters, 45(17), 8729-8737. https://doi.org/10.1029/2018GL079778

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title = "In Situ Observation of Magnetic Reconnection Between an Earthward Propagating Flux Rope and the Geomagnetic Field",

abstract = "It has been proposed that, in the near-Earth magnetotail, earthward propagating flux ropes can merge with the Earth's dipole magnetic field and dissipate its magnetic energy. However, the reconnection diffusion region related to this process has not been identified. Here we report the first in situ observation of magnetic reconnection between an earthward propagating flux rope and the closed magnetic field lines connecting to Earth. Magnetospheric Multiscale (MMS) spacecraft crossed a vertical current sheet between the leading edge of the flux rope (negative Bz) and the geomagnetic field (positive Bz). The subion-scale current sheet, super-Alfv{\'e}nic electron outflow, Hall magnetic and electric field, conversion of magnetic energy to plasma energy (J·E > 0), and magnetic null were observed during the crossing. All the above signatures indicate that MMS detected the reconnection diffusion region. This result is also relevant to other planets with intrinsic magnetosphere.",

keywords = "magnetic flux rope, magnetic null, magnetic reconnection",

author = "Man, \{H. Y.\} and M. Zhou and Deng, \{X. H.\} and Fu, \{H. S.\} and Zhong, \{Z. H.\} and Chen, \{Z. Z.\} and Russell, \{C. T.\} and Strangeway, \{R. J.\} and Paterson, \{W. R.\} and Giles, \{B. L.\} and Lindqvist, \{P. A.\} and Ergun, \{R. E.\} and Burch, \{J. L.\}",

year = "2018",

month = sep,

day = "16",

doi = "10.1029/2018GL079778",

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volume = "45",

pages = "8729--8737",

journal = "Geophysical Research Letters",

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}

Man, HY, Zhou, M, Deng, XH, Fu, HS, Zhong, ZH, Chen, ZZ, Russell, CT, Strangeway, RJ, Paterson, WR, Giles, BL, Lindqvist, PA, Ergun, RE & Burch, JL 2018, 'In Situ Observation of Magnetic Reconnection Between an Earthward Propagating Flux Rope and the Geomagnetic Field', Geophysical Research Letters, 卷 45, 号码 17, 页码 8729-8737. https://doi.org/10.1029/2018GL079778

TY - JOUR

T1 - In Situ Observation of Magnetic Reconnection Between an Earthward Propagating Flux Rope and the Geomagnetic Field

AU - Man, H. Y.

AU - Zhou, M.

AU - Deng, X. H.

AU - Fu, H. S.

AU - Zhong, Z. H.

AU - Chen, Z. Z.

AU - Russell, C. T.

AU - Strangeway, R. J.

AU - Paterson, W. R.

AU - Giles, B. L.

AU - Lindqvist, P. A.

AU - Ergun, R. E.

AU - Burch, J. L.

PY - 2018/9/16

Y1 - 2018/9/16

N2 - It has been proposed that, in the near-Earth magnetotail, earthward propagating flux ropes can merge with the Earth's dipole magnetic field and dissipate its magnetic energy. However, the reconnection diffusion region related to this process has not been identified. Here we report the first in situ observation of magnetic reconnection between an earthward propagating flux rope and the closed magnetic field lines connecting to Earth. Magnetospheric Multiscale (MMS) spacecraft crossed a vertical current sheet between the leading edge of the flux rope (negative Bz) and the geomagnetic field (positive Bz). The subion-scale current sheet, super-Alfvénic electron outflow, Hall magnetic and electric field, conversion of magnetic energy to plasma energy (J·E > 0), and magnetic null were observed during the crossing. All the above signatures indicate that MMS detected the reconnection diffusion region. This result is also relevant to other planets with intrinsic magnetosphere.

AB - It has been proposed that, in the near-Earth magnetotail, earthward propagating flux ropes can merge with the Earth's dipole magnetic field and dissipate its magnetic energy. However, the reconnection diffusion region related to this process has not been identified. Here we report the first in situ observation of magnetic reconnection between an earthward propagating flux rope and the closed magnetic field lines connecting to Earth. Magnetospheric Multiscale (MMS) spacecraft crossed a vertical current sheet between the leading edge of the flux rope (negative Bz) and the geomagnetic field (positive Bz). The subion-scale current sheet, super-Alfvénic electron outflow, Hall magnetic and electric field, conversion of magnetic energy to plasma energy (J·E > 0), and magnetic null were observed during the crossing. All the above signatures indicate that MMS detected the reconnection diffusion region. This result is also relevant to other planets with intrinsic magnetosphere.

KW - magnetic flux rope

KW - magnetic null

KW - magnetic reconnection

UR - https://www.scopus.com/pages/publications/85053246341

U2 - 10.1029/2018GL079778

DO - 10.1029/2018GL079778

M3 - 文章

AN - SCOPUS:85053246341

SN - 0094-8276

VL - 45

SP - 8729

EP - 8737

JO - Geophysical Research Letters

JF - Geophysical Research Letters

IS - 17

ER -

In Situ Observation of Magnetic Reconnection Between an Earthward Propagating Flux Rope and the Geomagnetic Field

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