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Inner plasma structure of the low-latitude reconnection layer

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Inner plasma structure of the low-latitude reconnection layer. / Zhang, Q. -H.; Dunlop, M. W.; Lockwood, M. et al.

In: Journal of Geophysical Research, Vol. 117, A08205, 03.08.2012, p. -.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

Zhang, Q-H, Dunlop, MW, Lockwood, M, Lavraud, B, Bogdanova, YV, Hasegawa, H, Yang, H-G, Liu, R-Y, Hu, H-Q, Zhang, B-C, Pu, Z-Y, Yang, Z-W, Wang, J, Taylor, MGGT, Berchem, J, Constantinescu, D, Volwerk, M, Frey, H, Fazakerley, AN, Shen, C, Shi, J-K, Sibeck, D, Escoubet, P & Wild, JA 2012, 'Inner plasma structure of the low-latitude reconnection layer', Journal of Geophysical Research, vol. 117, A08205, pp. -. https://doi.org/10.1029/2012JA017622

APA

Zhang, Q. -H., Dunlop, M. W., Lockwood, M., Lavraud, B., Bogdanova, Y. V., Hasegawa, H., Yang, H-G., Liu, R. -Y., Hu, H. -Q., Zhang, B. -C., Pu, Z. -Y., Yang, Z. -W., Wang, J., Taylor, M. G. G. T., Berchem, J., Constantinescu, D., Volwerk, M., Frey, H., Fazakerley, A. N., ... Wild, J. A. (2012). Inner plasma structure of the low-latitude reconnection layer. Journal of Geophysical Research, 117, -. [A08205]. https://doi.org/10.1029/2012JA017622

Vancouver

Zhang Q-H, Dunlop MW, Lockwood M, Lavraud B, Bogdanova YV, Hasegawa H et al. Inner plasma structure of the low-latitude reconnection layer. Journal of Geophysical Research. 2012 Aug 3;117:-. A08205. doi: 10.1029/2012JA017622

Author

Zhang, Q. -H. ; Dunlop, M. W. ; Lockwood, M. et al. / Inner plasma structure of the low-latitude reconnection layer. In: Journal of Geophysical Research. 2012 ; Vol. 117. pp. -.

Bibtex

@article{8a33ef1e22be4d13bd3022d703ff6812,
title = "Inner plasma structure of the low-latitude reconnection layer",
abstract = "We report a clear transition through a reconnection layer at the low-latitude magnetopause which shows a complete traversal across all reconnected field lines during northwestward interplanetary magnetic field (IMF) conditions. The associated plasma populations confirm details of the electron and ion mixing and the time history and acceleration through the current layer. This case has low magnetic shear with a strong guide field and the reconnection layer contains a single density depletion layer on the magnetosheath side which we suggest results from nearly field-aligned magnetosheath flows. Within the reconnection boundary layer, there are two plasma boundaries, close to the inferred separatrices on the magnetosphere and magnetosheath sides (S-sp and S-sh) and two boundaries associated with the Alfven waves (or Rotational Discontinuities, RDsp and RDsh). The data are consistent with these being launched from the reconnection site and the plasma distributions are well ordered and suggestive of the time elapsed since reconnection of the field lines observed. In each sub-layer between the boundaries the plasma distribution is different and is centered around the current sheet, responsible for magnetosheath acceleration. We show evidence for a velocity dispersion effect in the electron anisotropy that is consistent with the time elapsed since reconnection. In addition, new evidence is presented for the occurrence of partial reflection of magnetosheath electrons at the magnetopause current layer.",
keywords = "magnetic reconnection, THEMIS",
author = "Zhang, {Q. -H.} and Dunlop, {M. W.} and M. Lockwood and B. Lavraud and Bogdanova, {Y. V.} and H. Hasegawa and H-G. Yang and Liu, {R. -Y.} and Hu, {H. -Q.} and Zhang, {B. -C.} and Pu, {Z. -Y.} and Yang, {Z. -W.} and J. Wang and Taylor, {M. G. G. T.} and J. Berchem and D. Constantinescu and M. Volwerk and H. Frey and Fazakerley, {A. N.} and C. Shen and Shi, {J. -K.} and D. Sibeck and P. Escoubet and Wild, {J. A.}",
year = "2012",
month = aug,
day = "3",
doi = "10.1029/2012JA017622",
language = "English",
volume = "117",
pages = "--",
journal = "Journal of Geophysical Research",
issn = "0148-0227",
publisher = "American Geophysical Union",

}

RIS

TY - JOUR

T1 - Inner plasma structure of the low-latitude reconnection layer

AU - Zhang, Q. -H.

AU - Dunlop, M. W.

AU - Lockwood, M.

AU - Lavraud, B.

AU - Bogdanova, Y. V.

AU - Hasegawa, H.

AU - Yang, H-G.

AU - Liu, R. -Y.

AU - Hu, H. -Q.

AU - Zhang, B. -C.

AU - Pu, Z. -Y.

AU - Yang, Z. -W.

AU - Wang, J.

AU - Taylor, M. G. G. T.

AU - Berchem, J.

AU - Constantinescu, D.

AU - Volwerk, M.

AU - Frey, H.

AU - Fazakerley, A. N.

AU - Shen, C.

AU - Shi, J. -K.

AU - Sibeck, D.

AU - Escoubet, P.

AU - Wild, J. A.

PY - 2012/8/3

Y1 - 2012/8/3

N2 - We report a clear transition through a reconnection layer at the low-latitude magnetopause which shows a complete traversal across all reconnected field lines during northwestward interplanetary magnetic field (IMF) conditions. The associated plasma populations confirm details of the electron and ion mixing and the time history and acceleration through the current layer. This case has low magnetic shear with a strong guide field and the reconnection layer contains a single density depletion layer on the magnetosheath side which we suggest results from nearly field-aligned magnetosheath flows. Within the reconnection boundary layer, there are two plasma boundaries, close to the inferred separatrices on the magnetosphere and magnetosheath sides (S-sp and S-sh) and two boundaries associated with the Alfven waves (or Rotational Discontinuities, RDsp and RDsh). The data are consistent with these being launched from the reconnection site and the plasma distributions are well ordered and suggestive of the time elapsed since reconnection of the field lines observed. In each sub-layer between the boundaries the plasma distribution is different and is centered around the current sheet, responsible for magnetosheath acceleration. We show evidence for a velocity dispersion effect in the electron anisotropy that is consistent with the time elapsed since reconnection. In addition, new evidence is presented for the occurrence of partial reflection of magnetosheath electrons at the magnetopause current layer.

AB - We report a clear transition through a reconnection layer at the low-latitude magnetopause which shows a complete traversal across all reconnected field lines during northwestward interplanetary magnetic field (IMF) conditions. The associated plasma populations confirm details of the electron and ion mixing and the time history and acceleration through the current layer. This case has low magnetic shear with a strong guide field and the reconnection layer contains a single density depletion layer on the magnetosheath side which we suggest results from nearly field-aligned magnetosheath flows. Within the reconnection boundary layer, there are two plasma boundaries, close to the inferred separatrices on the magnetosphere and magnetosheath sides (S-sp and S-sh) and two boundaries associated with the Alfven waves (or Rotational Discontinuities, RDsp and RDsh). The data are consistent with these being launched from the reconnection site and the plasma distributions are well ordered and suggestive of the time elapsed since reconnection of the field lines observed. In each sub-layer between the boundaries the plasma distribution is different and is centered around the current sheet, responsible for magnetosheath acceleration. We show evidence for a velocity dispersion effect in the electron anisotropy that is consistent with the time elapsed since reconnection. In addition, new evidence is presented for the occurrence of partial reflection of magnetosheath electrons at the magnetopause current layer.

KW - magnetic reconnection

KW - THEMIS

U2 - 10.1029/2012JA017622

DO - 10.1029/2012JA017622

M3 - Journal article

VL - 117

SP - -

JO - Journal of Geophysical Research

JF - Journal of Geophysical Research

SN - 0148-0227

M1 - A08205

ER -