New properties of whistler modes
| Autor: | J. M. Urrutia, R. L. Stenzel |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Physics
Shock wave 010504 meteorology & atmospheric sciences Whistler business.industry Wave packet Plasma 01 natural sciences 010305 fluids & plasmas Computational physics Magnetic field Dipole Wavelength Geophysics Optics Physics::Plasma Physics Physics::Space Physics 0103 physical sciences Reflection (physics) General Earth and Planetary Sciences business 0105 earth and related environmental sciences |
| Zdroj: | Geophysical Research Letters. 44:2113-2119 |
| ISSN: | 1944-8007 0094-8276 |
| DOI: | 10.1002/2016gl072446 |
| Popis: | Two new properties of whistler modes have been observed in a large laboratory plasma which are relevant to whistler waves in space plasmas. The first is the reflection of whistler modes by nonuniform magnetic fields whose gradient scale length is comparable to the wavelength. Such situations may arise near shock waves, reconnection geometries, lunar crustal magnetic fields, and possibly for long wavelength whistlers in dipolar fields. The second observation shows that whistler modes can have linear polarizations. It arises by interference of wave packets. This observation may help interpret the variety of polarizations observed in magnetospheric whistlers. |
| Databáze: | OpenAIRE |
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