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DC Field | Value | Language |
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dc.contributor.author | Lakhina, G.S. | |
dc.date.accessioned | 2015-08-20T11:25:14Z | |
dc.date.accessioned | 2021-02-12T10:30:53Z | - |
dc.date.available | 2015-08-20T11:25:14Z | |
dc.date.available | 2021-02-12T10:30:53Z | - |
dc.date.issued | 2001 | |
dc.identifier.citation | Journal of Atmospheric and Solar-Terrestrial Physics, v.63, p.481-487, 2001, doi: 10.1016/S1364-6826(00)00160-7 | en_US |
dc.identifier.uri | http://localhost:8080/xmlui/handle/123456789/254 | - |
dc.description.abstract | The presence of an ionospheric-origin anisotropic oxygen ion beam can excite a helicon mode instability in the near-Earth plasma sheet region. The helicon modes can be easily excited under the conditions when the usual long wavelength fire-hose modes are stable. The helicon modes are likely to attain saturation as the typical e-folding time of the instability is about a few minutes in the near-Earth plasma sheet region. Therefore, the instability could significantly affect substorm dynamics and lead to enhanced ionosphere–magnetosphere coupling. Low-frequency turbulence produced by these modes could scatter electrons trapped in the inner central plasma sheer region and help excite the ion tearing modes, leading to substorm onset. As a result, the oxygen ions would be injected into the Earth's nightside magnetosphere. Repeated injections by this process would lead to enhanced oxygen ion fluxes in the storm-time ring current. | en_US |
dc.language.iso | en | en_US |
dc.subject | Helicon modes | en_US |
dc.subject | Oxygen | en_US |
dc.subject | Ring current | en_US |
dc.subject | Ionosphere–magnetosphere coupling | en_US |
dc.subject | Magnetosphere | en_US |
dc.subject | Near-Earth plasma sheet region | en_US |
dc.title | Role of helicon modes in the injection of oxygen ions in the ring current | en_US |
dc.type | Article | en_US |
dc.identifier.accession | 090741 | |
Appears in Collections: | UAS_Reprints |
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File | Description | Size | Format | |
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Lakhina,JASTP_2001_481-487.pdf Restricted Access | 120.52 kB | Adobe PDF | View/Open Request a copy |
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