Observations of correlated broadband electrostatic noise and electron cyclotron emissions in the plasma sheet

Journal Article · Tue Jan 01 04:00:00 EST 1991 · Geophysical Research Letters (American Geophysical Union); (United States)

DOI:https://doi.org/10.1029/90GL02036· OSTI ID:5152709

Roeder, J L ^[1]; Angelopoulos, V ^[2]; Baumjohann, W ^[3]; Anderson, R R ^[4]

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1. Aerospace Corp., Los Angeles, CA (United States)
2. Univ. of California, Los Angeles (United States)
3. Max-Planck-Inst. for Extraterrestrial Physics, Garching (West Germany)
4. Univ. of Iowa, Iowa City (United States)

Electric field wave observations in the central plasma sheet show the correlated occurrence of broadband electrostatic noise and electrostatic electron cyclotron harmonic emissions. A model is proposed in which the broadband emissions are electron acoustic waves generated by an observed low energy electron beam, and the cyclotron emissions are generated by the hot electron loss cone instability. The high degree of correlation between the two emissions is provided in the model by the presence of the cold electron beam population, which allows both of the plasma instabilities to grow.

• OSTI ID: 5152709
• Journal Information: Geophysical Research Letters (American Geophysical Union); (United States), Journal Name: Geophysical Research Letters (American Geophysical Union); (United States) Vol. 18:1; ISSN 0094-8276; ISSN GPRLA
• Country of Publication: United States
• Language: English

Related Subjects

640201* -- Atmospheric Physics-- Auroral
Ionospheric
& Magetospheric Phenomena
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BEAMS
CORRELATIONS
DATA
EARTH ATMOSPHERE
EARTH MAGNETOSPHERE
ELECTRIC FIELDS
ELECTRON BEAMS
ELECTRON PLASMA WAVES
INFORMATION
INSTABILITY
LEPTON BEAMS
LOSS CONE INSTABILITY
MAGNETOTAIL
MATHEMATICAL MODELS
PARTICLE BEAMS
PLASMA INSTABILITY
PLASMA MICROINSTABILITIES
PLASMA SHEET
PLASMA WAVES
SATELLITES
VARIATIONS