Ion sound wave packets at the quasiperpendicular shock front

M. Balikhin; Simon Walker; Rat Treumann; H. Alleyne; V. Krasnoselskikh; M. Gedalin; Mats Andre; M. W. Dunlop; A. Fazakerley

doi:10.1029/2005GL024660

Ion sound wave packets at the quasiperpendicular shock front

M. Balikhin, Simon Walker, Rat Treumann, H. Alleyne, V. Krasnoselskikh, M. Gedalin, Mats Andre, M. W. Dunlop, A. Fazakerley

Department of Physics

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

33 Scopus citations

Abstract

Electric field measurements from a single spacecraft have been used to study ion-sound turbulence observed within the Earth's bow shock. The observed frequency of the ion-sound waves can be both lower and higher than the local electron cyclotron frequency depending upon the direction of wave propagation in the plasma rest frame. The ion-sound waves observed upstream of the ramp can not be generated either by an instability related to the gradient in the electron temperature or an electric current within the ramp. A comparison of wave vectors for distinctive wave packets indicate that non-stationary, short scale current layers formed in the processes of the ramp evolution might be the source of the free energy for such waves.

Original language	English
Pages (from-to)	1-4
Number of pages	4
Journal	Geophysical Research Letters
Volume	32
Issue number	24
DOIs	https://doi.org/10.1029/2005GL024660
State	Published - 28 Dec 2005

ASJC Scopus subject areas

Geophysics
General Earth and Planetary Sciences

UN SDGs

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10.1029/2005GL024660

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abstract = "Electric field measurements from a single spacecraft have been used to study ion-sound turbulence observed within the Earth's bow shock. The observed frequency of the ion-sound waves can be both lower and higher than the local electron cyclotron frequency depending upon the direction of wave propagation in the plasma rest frame. The ion-sound waves observed upstream of the ramp can not be generated either by an instability related to the gradient in the electron temperature or an electric current within the ramp. A comparison of wave vectors for distinctive wave packets indicate that non-stationary, short scale current layers formed in the processes of the ramp evolution might be the source of the free energy for such waves.",

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T1 - Ion sound wave packets at the quasiperpendicular shock front

AU - Balikhin, M.

AU - Walker, Simon

AU - Treumann, Rat

AU - Alleyne, H.

AU - Krasnoselskikh, V.

AU - Gedalin, M.

AU - Andre, Mats

AU - Dunlop, M. W.

AU - Fazakerley, A.

PY - 2005/12/28

Y1 - 2005/12/28

N2 - Electric field measurements from a single spacecraft have been used to study ion-sound turbulence observed within the Earth's bow shock. The observed frequency of the ion-sound waves can be both lower and higher than the local electron cyclotron frequency depending upon the direction of wave propagation in the plasma rest frame. The ion-sound waves observed upstream of the ramp can not be generated either by an instability related to the gradient in the electron temperature or an electric current within the ramp. A comparison of wave vectors for distinctive wave packets indicate that non-stationary, short scale current layers formed in the processes of the ramp evolution might be the source of the free energy for such waves.

AB - Electric field measurements from a single spacecraft have been used to study ion-sound turbulence observed within the Earth's bow shock. The observed frequency of the ion-sound waves can be both lower and higher than the local electron cyclotron frequency depending upon the direction of wave propagation in the plasma rest frame. The ion-sound waves observed upstream of the ramp can not be generated either by an instability related to the gradient in the electron temperature or an electric current within the ramp. A comparison of wave vectors for distinctive wave packets indicate that non-stationary, short scale current layers formed in the processes of the ramp evolution might be the source of the free energy for such waves.

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JO - Geophysical Research Letters

JF - Geophysical Research Letters

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ER -

Ion sound wave packets at the quasiperpendicular shock front

Abstract

ASJC Scopus subject areas

UN SDGs

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