First Observation of Magnetic Flux Rope Inside Electron Diffusion Region

被引：22

作者：

Chen, Z. Z. ^{[1
,2
]}

Fu, H. S. ^{[1
,2
]}

Wang, Z. ^{[1
,2
]}

Guo, Z. Z. ^{[1
,2
]}

Xu, Y. ^{[1
,2
]}

Liu, C. M. ^{[1
,2
]}

机构：

[1] Beihang Univ, Sch Space & Environm, Beijing, Peoples R China

[2] Minist Ind & Informat Technol, Key Lab Space Environm Monitoring & Informat Proc, Beijing, Peoples R China

来源：

GEOPHYSICAL RESEARCH LETTERS | 2021年 / 48卷 / 07期

基金：

中国博士后科学基金;

关键词：

electron diffusion region; magnetic flux rope; magnetic reconnection; PARTICLE-ACCELERATION; DIPOLARIZATION FRONTS; ENERGY-DISSIPATION; MMS OBSERVATIONS; RECONNECTION; NULLS; TURBULENCE; TOPOLOGY; ISLAND;

D O I：

10.1029/2020GL089722

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Magnetic flux ropes (MFRs) play a crucial role during magnetic reconnection. They are believed to be primarily generated by tearing mode instabilities in the electron diffusion region (EDR). However, they have never been observed inside the EDR. Here, we present the first observation of an MFR inside an EDR. The bifurcated nonforce-free MFR, with a width of similar to 27.5 d(e) in the L direction and similar to 4.8 d(e) in the N direction, was moving away from the X-line. Inside the MFR, strong energy dissipation was detected. The MFR can modulate the electric field in the EDR. We reconstructed magnetic topology of the electron-scale MFR. Our study promotes understanding of MRFs' initial state and its role in electron-scale processes during magnetic reconnection.

引用

页数：10

共 80 条

[1] Tail reconnection triggering substorm onset [J].

Angelopoulos, Vassilis ;

McFadden, James P. ;

Larson, Davin ;

Carlson, Charles W. ;

Mende, Stephen B. ;

Frey, Harald ;

Phan, Tai ;

Sibeck, David G. ;

Glassmeier, Karl-Heinz ;

Auster, Uli ;

Donovan, Eric ;

Mann, Ian R. ;

Rae, I. Jonathan ;

Russell, Christopher T. ;

Runov, Andrei ;

Zhou, Xu-Zhi ;

Kepko, Larry .

SCIENCE, 2008, 321 (5891) :931-935

[2] Magnetospheric Multiscale Overview and Science Objectives [J].

Burch, J. L. ;

Moore, T. E. ;

Torbert, R. B. ;

Giles, B. L. .

SPACE SCIENCE REVIEWS, 2016, 199 (1-4) :5-21

[3] Electron-scale measurements of magnetic reconnection in space [J].

Burch, J. L. ;

Torbert, R. B. ;

Phan, T. D. ;

Chen, L. -J. ;

Moore, T. E. ;

Ergun, R. E. ;

Eastwood, J. P. ;

Gershman, D. J. ;

Cassak, P. A. ;

Argall, M. R. ;

Wang, S. ;

Hesse, M. ;

Pollock, C. J. ;

Giles, B. L. ;

Nakamura, R. ;

Mauk, B. H. ;

Fuselier, S. A. ;

Russell, C. T. ;

Strangeway, R. J. ;

Drake, J. F. ;

Shay, M. A. ;

Khotyaintsev, Yu. V. ;

Lindqvist, P. -A. ;

Marklund, G. ;

Wilder, F. D. ;

Young, D. T. ;

Torkar, K. ;

Goldstein, J. ;

Dorelli, J. C. ;

Avanov, L. A. ;

Oka, M. ;

Baker, D. N. ;

Jaynes, A. N. ;

Goodrich, K. A. ;

Cohen, I. J. ;

Turner, D. L. ;

Fennell, J. F. ;

Blake, J. B. ;

Clemmons, J. ;

Goldman, M. ;

Newman, D. ;

Petrinec, S. M. ;

Trattner, K. J. ;

Lavraud, B. ;

Reiff, P. H. ;

Baumjohann, W. ;

Magnes, W. ;

Steller, M. ;

Lewis, W. ;

Saito, Y. .

SCIENCE, 2016, 352 (6290)

[4] MMS observations of whistler waves in electron diffusion region [J].

Cao, D. ;

Fu, H. S. ;

Cao, J. B. ;

Wang, T. Y. ;

Graham, D. B. ;

Chen, Z. Z. ;

Peng, F. Z. ;

Huang, S. Y. ;

Khotyaintsev, Y. V. ;

Andre, M. ;

Russell, C. T. ;

Giles, B. L. ;

Lindqvist, P. -A. ;

Torbert, R. B. ;

Ergun, R. E. ;

Le Contel, O. ;

Burch, J. L. .

GEOPHYSICAL RESEARCH LETTERS, 2017, 44 (09) :3954-3962

[5] Joint observations by Cluster satellites of bursty bulk flows in the magnetotail [J].

Cao, JB ;

Ma, YD ;

Parks, G ;

Reme, H ;

Dandouras, I ;

Nakamura, R ;

Zhang, TL ;

Zong, Q ;

Lucek, E ;

Carr, CM ;

Liu, ZX ;

Zhou, GC .

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 2006, 111 (A4)

[6] Geomagnetic signatures of current wedge produced by fast flows in a plasma sheet [J].

Cao, Jin-Bin ;

Yan, Chunxiao ;

Dunlop, Malcolm ;

Reme, Henri ;

Dandouras, Iannis ;

Zhang, Tielong ;

Yang, Dongmei ;

Moiseyev, Alexey ;

Solovyev, Stepan I. ;

Wang, Z. Q. ;

Leonoviche, A. ;

Zolotukhina, N. ;

Mishin, V. .

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 2010, 115

[7] Kinetic analysis of the energy transport of bursty bulk flows in the plasma sheet [J].

Cao, Jinbin ;

Ma, Yuduan ;

Parks, George ;

Reme, Henri ;

Dandouras, Iannis ;

Zhang, Tielong .

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 2013, 118 (01) :313-320

[8] Observation of energetic electrons within magnetic islands [J].

Chen, L. -J. ;

Bhattacharjee, A. ;

Puhl-Quinn, P. A. ;

Yang, H. ;

Bessho, N. ;

Imada, S. ;

Muehlbachler, S. ;

Daly, P. W. ;

Lefebvre, B. ;

Khotyaintsev, Y. ;

Vaivads, A. ;

Fazakerley, A. ;

Georgescu, E. .

NATURE PHYSICS, 2008, 4 (01) :19-23

[9] An emerging flux trigger mechanism for coronal mass ejections [J].

Chen, PF ;

Shibata, K .

ASTROPHYSICAL JOURNAL, 2000, 545 (01) :524-531

[10] Magnetic Nulls in the Reconnection Driven by Turbulence [J].

Chen, X. H. ;

Fu, H. S. ;

Liu, C. M. ;

Cao, D. ;

Wang, Z. ;

Dunlop, M. W. ;

Chen, Z. Z. ;

Peng, F. Z. .

ASTROPHYSICAL JOURNAL, 2018, 852 (01)

← 1 2 3 4 5 6 7 8 →