Modulated electron-acoustic waves in auroral density cavities: FAST observations

R. Pottelette; R. E. Ergun; R. A. Treumann; M. Berthomier; C. W. Carlson; J. P. McFadden; I. Roth

doi:10.1029/1999GL900462

Modulated electron-acoustic waves in auroral density cavities: FAST observations

R. Pottelette, R. E. Ergun, R. A. Treumann, M. Berthomier, C. W. Carlson, J. P. McFadden, I. Roth

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

Abstract

We report on FAST observations of large amplitude (up to 500 mV m^-1) envelope solitary waves at the edges of the AKR source region. These edges are characterized by the presence of two electron populations: a dominant hot (approx. keV) component and a minority cold (< 60 eV) component. The nonlinear waves are recorded when the spacecraft passes the base of the parallel auroral acceleration region. They form intense packets of electron acoustic waves. The modulation is due to ion acoustic waves. These structures are electrostatic and propagate along the magnetic field at speeds of a few 100 km s^-1. They may play a crucial role in the acceleration processes taking place in these regions.

Original language	English
Pages (from-to)	2629-2632
Number of pages	4
Journal	Geophysical Research Letters
Volume	26
Issue number	16
DOIs	https://doi.org/10.1029/1999GL900462
Publication status	Published - 1 Jan 1999
Externally published	Yes

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title = "Modulated electron-acoustic waves in auroral density cavities: FAST observations",

abstract = "We report on FAST observations of large amplitude (up to 500 mV m-1) envelope solitary waves at the edges of the AKR source region. These edges are characterized by the presence of two electron populations: a dominant hot (approx. keV) component and a minority cold (< 60 eV) component. The nonlinear waves are recorded when the spacecraft passes the base of the parallel auroral acceleration region. They form intense packets of electron acoustic waves. The modulation is due to ion acoustic waves. These structures are electrostatic and propagate along the magnetic field at speeds of a few 100 km s-1. They may play a crucial role in the acceleration processes taking place in these regions.",

author = "R. Pottelette and Ergun, \{R. E.\} and Treumann, \{R. A.\} and M. Berthomier and Carlson, \{C. W.\} and McFadden, \{J. P.\} and I. Roth",

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T1 - Modulated electron-acoustic waves in auroral density cavities

T2 - FAST observations

AU - Pottelette, R.

AU - Ergun, R. E.

AU - Treumann, R. A.

AU - Berthomier, M.

AU - Carlson, C. W.

AU - McFadden, J. P.

AU - Roth, I.

PY - 1999/1/1

Y1 - 1999/1/1

N2 - We report on FAST observations of large amplitude (up to 500 mV m-1) envelope solitary waves at the edges of the AKR source region. These edges are characterized by the presence of two electron populations: a dominant hot (approx. keV) component and a minority cold (< 60 eV) component. The nonlinear waves are recorded when the spacecraft passes the base of the parallel auroral acceleration region. They form intense packets of electron acoustic waves. The modulation is due to ion acoustic waves. These structures are electrostatic and propagate along the magnetic field at speeds of a few 100 km s-1. They may play a crucial role in the acceleration processes taking place in these regions.

AB - We report on FAST observations of large amplitude (up to 500 mV m-1) envelope solitary waves at the edges of the AKR source region. These edges are characterized by the presence of two electron populations: a dominant hot (approx. keV) component and a minority cold (< 60 eV) component. The nonlinear waves are recorded when the spacecraft passes the base of the parallel auroral acceleration region. They form intense packets of electron acoustic waves. The modulation is due to ion acoustic waves. These structures are electrostatic and propagate along the magnetic field at speeds of a few 100 km s-1. They may play a crucial role in the acceleration processes taking place in these regions.

U2 - 10.1029/1999GL900462

DO - 10.1029/1999GL900462

M3 - Article

AN - SCOPUS:0033371985

SN - 0094-8276

VL - 26

SP - 2629

EP - 2632

JO - Geophysical Research Letters

JF - Geophysical Research Letters

IS - 16

ER -

Modulated electron-acoustic waves in auroral density cavities: FAST observations

Abstract

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