Observation of nonlinear wave decay processes in the solar wind by the AMPTE IRM plasma wave experiment

Journal Article · Mon Jun 01 04:00:00 EDT 1987 · Journal of Geophysical Research; (United States)

DOI:https://doi.org/10.1029/JA092iA06p05865· OSTI ID:5940635

Koons, H C; Roeder, J L ^[1]; Bauer, O H; Haerendel, G; Treumann, R ^[2]; Anderson, R R; Gurnett, D A ^[3]; Holzworth, R H ^[4]

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

Nonlinear wave decay processes have been detected in the solar wind by the plasma wave experiment aboard the Active Magnetospheric Particle Tracer Explorers (AMPTE) IRM spacecraft. The main process is the generation of ultralow-frequency ion acoustic waves from the decay of Langmuir waves near the electron plasma frequency. Frequently, this is accompanied by an enhancement of emissions near twice the plasma frequency. This enhancement is most likely due to the generation of electromagnetic waves from the coalescence of two Langmuir waves. These processes occur within the electron foreshock in front of the earth's bow shock.

• OSTI ID: 5940635
• Journal Information: Journal of Geophysical Research; (United States), Journal Name: Journal of Geophysical Research; (United States) Vol. 92:A6; ISSN 0148-0227; ISSN JGREA
• Country of Publication: United States
• Language: English

Related Subjects

661320* -- Auroral
Ionospheric
& Magnetospheric Phenomena-- (1992-)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
DECAY
EARTH ATMOSPHERE
EARTH MAGNETOSPHERE
ELECTROMAGNETIC RADIATION
INTERACTIONS
ION ACOUSTIC WAVES
ION WAVES
MODE CONVERSION
NONLINEAR PROBLEMS
PLASMA WAVES
RADIATIONS
RADIOWAVE RADIATION
SATELLITES
SHOCK WAVES
SOLAR ACTIVITY
SOLAR RADIO BURSTS
SOLAR WIND