Low-frequency waves associated with Langmuir waves in solar wind
Autor: | R. G. Stone, Donat G. Wentzel, G. Thejappa |
---|---|
Rok vydání: | 1995 |
Předmět: |
Atmospheric Science
Wave propagation Infragravity wave Wave turbulence Soil Science Aquatic Science Oceanography Optics Geochemistry and Petrology Earth and Planetary Sciences (miscellaneous) Gravity wave Earth-Surface Processes Water Science and Technology Physics Ecology business.industry Atmospheric wave Paleontology Forestry Internal wave Ion acoustic wave Computational physics Geophysics Space and Planetary Science Physics::Space Physics Mechanical wave business |
Zdroj: | Journal of Geophysical Research: Space Physics. 100:3417-3426 |
ISSN: | 0148-0227 |
DOI: | 10.1029/94ja03237 |
Popis: | The Ulysses spacecraft has detected several events of low-frequency electromagnetic waves in association with Langmuir waves in the solar wind. The high time resolution observations show that the Langmuir waves are very intense and occur as broad peaks superposed by collapsing millisecond spikes. The low-frequency waves are identified as electromagnetic lower hybrid waves. The observed energy densities of these waves often exceed the strong turbulence thresholds. It is shown that none of the parametric decay instabilities involving Langmuir and low-frequency waves are energetically favorable to explain the present observations. The low-frequency waves are proposed to arise from currents associated with gradients in the electron beam originating at sites where Langmuir waves scatter the beam electrons. |
Databáze: | OpenAIRE |
Externí odkaz: |
Pro tento záznam nejsou dostupné žádné jednotky.