Observations of whistler mode waves with nonlinear parallel electric fields near the dayside magnetic reconnection separatrix by the Magnetospheric Multiscale mission

Frederick D. Wilder; Robert E. Ergun; Katherine A. Goodrich; M. V. Goldman; D. L. Newman; David M. Malaspina; A. N. Jaynes; Steven J. Schwartz; K. J. Trattner; J. L. Burch; M. R. Argall; Roy B. Torbert; Per-Arne Lindqvist; G. Marklund; Olivier Le Contel; L. Mirioni; Yu V. Khotyaintsev; Robert J. Strangeway; Christopher T. Russell; Craig J. Pollock; Barbara L. Giles; F. Plaschke; Werner Magnes; S. Eriksson; J. E. Stawarz; A. P. Sturner; J. C. Holmes

doi:10.1002/2016GL069473

Observations of whistler mode waves with nonlinear parallel electric fields near the dayside magnetic reconnection separatrix by the Magnetospheric Multiscale mission

Frederick D. Wilder^*, Robert E. Ergun, Katherine A. Goodrich, M. V. Goldman, D. L. Newman, David M. Malaspina, A. N. Jaynes, Steven J. Schwartz, K. J. Trattner, J. L. Burch, M. R. Argall, Roy B. Torbert, Per-Arne Lindqvist, G. Marklund, Olivier Le Contel, L. Mirioni, Yu V. Khotyaintsev, Robert J. Strangeway, Christopher T. Russell, Craig J. PollockBarbara L. Giles, F. Plaschke, Werner Magnes, S. Eriksson, J. E. Stawarz, A. P. Sturner, J. C. Holmes

^*Corresponding author for this work

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

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Abstract

We show observations from the Magnetospheric Multiscale (MMS) mission of whistler mode waves in the Earth's low-latitude boundary layer (LLBL) during a magnetic reconnection event. The waves propagated obliquely to the magnetic field toward the X line and were confined to the edge of a southward jet in the LLBL. Bipolar parallel electric fields interpreted as electrostatic solitary waves (ESW) are observed intermittently and appear to be in phase with the parallel component of the whistler oscillations. The polarity of the ESWs suggests that if they propagate with the waves, they are electron enhancements as opposed to electron holes. The reduced electron distribution shows a shoulder in the distribution for parallel velocities between 17,000 and 22,000 km/s, which persisted during the interval when ESWs were observed, and is near the phase velocity of the whistlers. This shoulder can drive Langmuir waves, which were observed in the high-frequency parallel electric field data.

Original language	English
Pages (from-to)	5909-5917
Number of pages	9
Journal	Geophysical Research Letters
Volume	43
Issue number	12
DOIs	https://doi.org/10.1002/2016GL069473
Publication status	Published - 28 Jun 2016
Externally published	Yes

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Wilder, F. D., Ergun, R. E., Goodrich, K. A., Goldman, M. V., Newman, D. L., Malaspina, D. M., Jaynes, A. N., Schwartz, S. J., Trattner, K. J., Burch, J. L., Argall, M. R., Torbert, R. B., Lindqvist, P.-A., Marklund, G., Le Contel, O., Mirioni, L., Khotyaintsev, Y. V., Strangeway, R. J., Russell, C. T., ... Holmes, J. C. (2016). Observations of whistler mode waves with nonlinear parallel electric fields near the dayside magnetic reconnection separatrix by the Magnetospheric Multiscale mission. Geophysical Research Letters, 43(12), 5909-5917. https://doi.org/10.1002/2016GL069473

@article{33691cb95f4042bc91abc48c0329fe92,

title = "Observations of whistler mode waves with nonlinear parallel electric fields near the dayside magnetic reconnection separatrix by the Magnetospheric Multiscale mission",

abstract = "We show observations from the Magnetospheric Multiscale (MMS) mission of whistler mode waves in the Earth's low-latitude boundary layer (LLBL) during a magnetic reconnection event. The waves propagated obliquely to the magnetic field toward the X line and were confined to the edge of a southward jet in the LLBL. Bipolar parallel electric fields interpreted as electrostatic solitary waves (ESW) are observed intermittently and appear to be in phase with the parallel component of the whistler oscillations. The polarity of the ESWs suggests that if they propagate with the waves, they are electron enhancements as opposed to electron holes. The reduced electron distribution shows a shoulder in the distribution for parallel velocities between 17,000 and 22,000 km/s, which persisted during the interval when ESWs were observed, and is near the phase velocity of the whistlers. This shoulder can drive Langmuir waves, which were observed in the high-frequency parallel electric field data.",

author = "Wilder, {Frederick D.} and Ergun, {Robert E.} and Goodrich, {Katherine A.} and Goldman, {M. V.} and Newman, {D. L.} and Malaspina, {David M.} and Jaynes, {A. N.} and Schwartz, {Steven J.} and Trattner, {K. J.} and Burch, {J. L.} and Argall, {M. R.} and Torbert, {Roy B.} and Per-Arne Lindqvist and G. Marklund and {Le Contel}, Olivier and L. Mirioni and Khotyaintsev, {Yu V.} and Strangeway, {Robert J.} and Russell, {Christopher T.} and Pollock, {Craig J.} and Giles, {Barbara L.} and F. Plaschke and Werner Magnes and S. Eriksson and Stawarz, {J. E.} and Sturner, {A. P.} and Holmes, {J. C.}",

year = "2016",

month = jun,

day = "28",

doi = "10.1002/2016GL069473",

language = "English",

volume = "43",

pages = "5909--5917",

journal = "Geophysical Research Letters",

issn = "0094-8276",

publisher = "Blackwell Publishing",

number = "12",

}

Wilder, FD, Ergun, RE, Goodrich, KA, Goldman, MV, Newman, DL, Malaspina, DM, Jaynes, AN, Schwartz, SJ, Trattner, KJ, Burch, JL, Argall, MR, Torbert, RB, Lindqvist, P-A, Marklund, G, Le Contel, O, Mirioni, L, Khotyaintsev, YV, Strangeway, RJ, Russell, CT, Pollock, CJ, Giles, BL, Plaschke, F, Magnes, W, Eriksson, S, Stawarz, JE, Sturner, AP & Holmes, JC 2016, 'Observations of whistler mode waves with nonlinear parallel electric fields near the dayside magnetic reconnection separatrix by the Magnetospheric Multiscale mission', Geophysical Research Letters, vol. 43, no. 12, pp. 5909-5917. https://doi.org/10.1002/2016GL069473

Observations of whistler mode waves with nonlinear parallel electric fields near the dayside magnetic reconnection separatrix by the Magnetospheric Multiscale mission. / Wilder, Frederick D.; Ergun, Robert E.; Goodrich, Katherine A. et al.
In: Geophysical Research Letters, Vol. 43, No. 12, 28.06.2016, p. 5909-5917.

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

TY - JOUR

T1 - Observations of whistler mode waves with nonlinear parallel electric fields near the dayside magnetic reconnection separatrix by the Magnetospheric Multiscale mission

AU - Wilder, Frederick D.

AU - Ergun, Robert E.

AU - Goodrich, Katherine A.

AU - Goldman, M. V.

AU - Newman, D. L.

AU - Malaspina, David M.

AU - Jaynes, A. N.

AU - Schwartz, Steven J.

AU - Trattner, K. J.

AU - Burch, J. L.

AU - Argall, M. R.

AU - Torbert, Roy B.

AU - Lindqvist, Per-Arne

AU - Marklund, G.

AU - Le Contel, Olivier

AU - Mirioni, L.

AU - Khotyaintsev, Yu V.

AU - Strangeway, Robert J.

AU - Russell, Christopher T.

AU - Pollock, Craig J.

AU - Giles, Barbara L.

AU - Plaschke, F.

AU - Magnes, Werner

AU - Eriksson, S.

AU - Stawarz, J. E.

AU - Sturner, A. P.

AU - Holmes, J. C.

PY - 2016/6/28

Y1 - 2016/6/28

N2 - We show observations from the Magnetospheric Multiscale (MMS) mission of whistler mode waves in the Earth's low-latitude boundary layer (LLBL) during a magnetic reconnection event. The waves propagated obliquely to the magnetic field toward the X line and were confined to the edge of a southward jet in the LLBL. Bipolar parallel electric fields interpreted as electrostatic solitary waves (ESW) are observed intermittently and appear to be in phase with the parallel component of the whistler oscillations. The polarity of the ESWs suggests that if they propagate with the waves, they are electron enhancements as opposed to electron holes. The reduced electron distribution shows a shoulder in the distribution for parallel velocities between 17,000 and 22,000 km/s, which persisted during the interval when ESWs were observed, and is near the phase velocity of the whistlers. This shoulder can drive Langmuir waves, which were observed in the high-frequency parallel electric field data.

AB - We show observations from the Magnetospheric Multiscale (MMS) mission of whistler mode waves in the Earth's low-latitude boundary layer (LLBL) during a magnetic reconnection event. The waves propagated obliquely to the magnetic field toward the X line and were confined to the edge of a southward jet in the LLBL. Bipolar parallel electric fields interpreted as electrostatic solitary waves (ESW) are observed intermittently and appear to be in phase with the parallel component of the whistler oscillations. The polarity of the ESWs suggests that if they propagate with the waves, they are electron enhancements as opposed to electron holes. The reduced electron distribution shows a shoulder in the distribution for parallel velocities between 17,000 and 22,000 km/s, which persisted during the interval when ESWs were observed, and is near the phase velocity of the whistlers. This shoulder can drive Langmuir waves, which were observed in the high-frequency parallel electric field data.

UR - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000380910100001&KeyUID=WOS:000380910100001

U2 - 10.1002/2016GL069473

DO - 10.1002/2016GL069473

M3 - Article

SN - 0094-8276

VL - 43

SP - 5909

EP - 5917

JO - Geophysical Research Letters

JF - Geophysical Research Letters

IS - 12

ER -

Observations of whistler mode waves with nonlinear parallel electric fields near the dayside magnetic reconnection separatrix by the Magnetospheric Multiscale mission

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