| タイトル | On the absence of plasma wave emissions and the magnetic field orientation in the distant magnetosheath |
| 著者（英） | Coroniti, F. V.; Moses, S. L.; Smith, E. J.; Tsurutani, B. T.; Greenstadt, E. W. |
| 著者所属（英） | Jet Propulsion Lab., California Inst. of Tech.|NASA Goddard Space Flight Center |
| 発行日 | 1994-12-01 |
| 言語 | eng |
| 内容記述 | In early September, 1983 ISEE-3 made a long traversal of the distant dawnside magnetosheath starting near x = -150 R(sub E) downstream. The distant magnetosheath often contains moderately intense plasma wave emissions at frequencies from several hundred Hz to 5 kHz. However, over time scales of many days, a clear correlation exists between the occurrence of the plasma waves and the cone angle (theta(sub xB)) between the magnetic field and the plasma flow velocity (x-direction). For theta(sub xB) large (small), the plasma wave amplitudes are near background (high). Sudden (less than 1 minute) changes in the local magnetic field orientation produce correspondingly sudden changes in the wave amplitudes. Statistically, the wave amplitudes decrease continuously with increasing theta(sub xB). |
| NASA分類 | PLASMA PHYSICS |
| レポートNO | 95A79723 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/308004 |
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