Quadrupolar pattern of the asymmetric guide-field reconnection

F. Z. Peng; H. S. Fu; J. B. Cao; D. B. Graham; Z. Z. Chen; D. Cao; Y. Xu; S. Y. Huang; T. Y. Wang; Y. V. Khotyaintsev; M. Andre; C. T. Russell; B. Giles; P. A. Lindqvist; R. B. Torbert; R. E. Ergun; J. L. Burch

doi:10.1002/2016JA023666

Quadrupolar pattern of the asymmetric guide-field reconnection

F. Z. Peng
, H. S. Fu^*
, J. B. Cao
, D. B. Graham
, Z. Z. Chen
, D. Cao
, Y. Xu
, S. Y. Huang
, T. Y. Wang
, Y. V. Khotyaintsev
, M. Andre
, C. T. Russell
, B. Giles
, P. A. Lindqvist
, R. B. Torbert
, R. E. Ergun
, J. L. Burch

^*Corresponding author for this work

School of Space and Earth Sciences

Beihang University
Box 537
Wuhan University
University of California at Los Angeles
NASA Goddard Space Flight Center
KTH Royal Institute of Technology
University of New Hampshire
University of Colorado Boulder
Southwest Research Institute

Research output: Contribution to journal › Article › peer-review

51 Scopus citations

Abstract

With high-resolution data of the recently launched Magnetospheric Multiscale mission, we report a magnetic reconnection event at the dayside magnetopause. This reconnection event, having a density asymmetry N_high/N_low ≈ 2 on the two sides of the reconnecting current sheet and a guide field B_g ≈ 0.4B₀ in the “out-of-plane” direction, exhibit all the two-fluid features: Alfvenic plasma jets in the outflow region, bipolar Hall electric fields toward the current sheet center, quadrupolar Hall magnetic fields in the “out-of-plane” direction, and the corresponding Hall currents. Obviously, the density asymmetry N_high/N_low ≈ 2 and the guide field B_g ≈ 0.4B₀ are not sufficient to dismiss the quadrupolar pattern of Hall reconnection. This is different from previous simulations, where the bipolar pattern of Hall reconnection was suggested.

Original language	English
Pages (from-to)	6349-6356
Number of pages	8
Journal	Journal of Geophysical Research: Space Physics
Volume	122
Issue number	6
DOIs	https://doi.org/10.1002/2016JA023666
State	Published - 1 Jun 2017

Keywords

Alfvenic plasma jet
moderate guide field
number density asymmetry
quadrupolar Hall pattern
reconnection at magnetopause

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10.1002/2016JA023666

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Peng, F. Z., Fu, H. S., Cao, J. B., Graham, D. B., Chen, Z. Z., Cao, D., Xu, Y., Huang, S. Y., Wang, T. Y., Khotyaintsev, Y. V., Andre, M., Russell, C. T., Giles, B., Lindqvist, P. A., Torbert, R. B., Ergun, R. E., & Burch, J. L. (2017). Quadrupolar pattern of the asymmetric guide-field reconnection. Journal of Geophysical Research: Space Physics, 122(6), 6349-6356. https://doi.org/10.1002/2016JA023666

@article{0076cbce34604e6c9d4a86330a98800b,

title = "Quadrupolar pattern of the asymmetric guide-field reconnection",

abstract = "With high-resolution data of the recently launched Magnetospheric Multiscale mission, we report a magnetic reconnection event at the dayside magnetopause. This reconnection event, having a density asymmetry Nhigh/Nlow ≈ 2 on the two sides of the reconnecting current sheet and a guide field Bg ≈ 0.4B0 in the “out-of-plane” direction, exhibit all the two-fluid features: Alfvenic plasma jets in the outflow region, bipolar Hall electric fields toward the current sheet center, quadrupolar Hall magnetic fields in the “out-of-plane” direction, and the corresponding Hall currents. Obviously, the density asymmetry Nhigh/Nlow ≈ 2 and the guide field Bg ≈ 0.4B0 are not sufficient to dismiss the quadrupolar pattern of Hall reconnection. This is different from previous simulations, where the bipolar pattern of Hall reconnection was suggested.",

keywords = "Alfvenic plasma jet, moderate guide field, number density asymmetry, quadrupolar Hall pattern, reconnection at magnetopause",

author = "Peng, \{F. Z.\} and Fu, \{H. S.\} and Cao, \{J. B.\} and Graham, \{D. B.\} and Chen, \{Z. Z.\} and D. Cao and Y. Xu and Huang, \{S. Y.\} and Wang, \{T. Y.\} and Khotyaintsev, \{Y. V.\} and M. Andre and Russell, \{C. T.\} and B. Giles and Lindqvist, \{P. A.\} and Torbert, \{R. B.\} and Ergun, \{R. E.\} and Burch, \{J. L.\}",

year = "2017",

month = jun,

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doi = "10.1002/2016JA023666",

language = "英语",

volume = "122",

pages = "6349--6356",

journal = "Journal of Geophysical Research: Space Physics",

issn = "2169-9380",

publisher = "Wiley-Blackwell",

number = "6",

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Peng, FZ, Fu, HS , Cao, JB, Graham, DB, Chen, ZZ, Cao, D, Xu, Y, Huang, SY, Wang, TY, Khotyaintsev, YV, Andre, M, Russell, CT, Giles, B, Lindqvist, PA, Torbert, RB, Ergun, RE & Burch, JL 2017, 'Quadrupolar pattern of the asymmetric guide-field reconnection', Journal of Geophysical Research: Space Physics, vol. 122, no. 6, pp. 6349-6356. https://doi.org/10.1002/2016JA023666

TY - JOUR

T1 - Quadrupolar pattern of the asymmetric guide-field reconnection

AU - Peng, F. Z.

AU - Fu, H. S.

AU - Cao, J. B.

AU - Graham, D. B.

AU - Chen, Z. Z.

AU - Cao, D.

AU - Xu, Y.

AU - Huang, S. Y.

AU - Wang, T. Y.

AU - Khotyaintsev, Y. V.

AU - Andre, M.

AU - Russell, C. T.

AU - Giles, B.

AU - Lindqvist, P. A.

AU - Torbert, R. B.

AU - Ergun, R. E.

AU - Burch, J. L.

PY - 2017/6/1

Y1 - 2017/6/1

N2 - With high-resolution data of the recently launched Magnetospheric Multiscale mission, we report a magnetic reconnection event at the dayside magnetopause. This reconnection event, having a density asymmetry Nhigh/Nlow ≈ 2 on the two sides of the reconnecting current sheet and a guide field Bg ≈ 0.4B0 in the “out-of-plane” direction, exhibit all the two-fluid features: Alfvenic plasma jets in the outflow region, bipolar Hall electric fields toward the current sheet center, quadrupolar Hall magnetic fields in the “out-of-plane” direction, and the corresponding Hall currents. Obviously, the density asymmetry Nhigh/Nlow ≈ 2 and the guide field Bg ≈ 0.4B0 are not sufficient to dismiss the quadrupolar pattern of Hall reconnection. This is different from previous simulations, where the bipolar pattern of Hall reconnection was suggested.

AB - With high-resolution data of the recently launched Magnetospheric Multiscale mission, we report a magnetic reconnection event at the dayside magnetopause. This reconnection event, having a density asymmetry Nhigh/Nlow ≈ 2 on the two sides of the reconnecting current sheet and a guide field Bg ≈ 0.4B0 in the “out-of-plane” direction, exhibit all the two-fluid features: Alfvenic plasma jets in the outflow region, bipolar Hall electric fields toward the current sheet center, quadrupolar Hall magnetic fields in the “out-of-plane” direction, and the corresponding Hall currents. Obviously, the density asymmetry Nhigh/Nlow ≈ 2 and the guide field Bg ≈ 0.4B0 are not sufficient to dismiss the quadrupolar pattern of Hall reconnection. This is different from previous simulations, where the bipolar pattern of Hall reconnection was suggested.

KW - Alfvenic plasma jet

KW - moderate guide field

KW - number density asymmetry

KW - quadrupolar Hall pattern

KW - reconnection at magnetopause

UR - https://www.scopus.com/pages/publications/85021356817

U2 - 10.1002/2016JA023666

DO - 10.1002/2016JA023666

M3 - 文章

AN - SCOPUS:85021356817

SN - 2169-9380

VL - 122

SP - 6349

EP - 6356

JO - Journal of Geophysical Research: Space Physics

JF - Journal of Geophysical Research: Space Physics

IS - 6

ER -

Quadrupolar pattern of the asymmetric guide-field reconnection

Abstract

Keywords

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