| タイトル | The cause of two plasma-tail disconnection events in comet P/Haley during the ICE-Halley radial period |
| 著者（英） | Brandt, J. C.; Brosius, J. W.; Slavin, J. A.; Holman, G. D.; Smith, E. J.; Niedner, M. B. |
| 著者所属（英） | NASA Goddard Space Flight Center|Jet Propulsion Lab., California Inst. of Tech.|ST Systems Corp. |
| 発行日 | 1987-11-01 |
| 言語 | eng |
| 内容記述 | The causes of two plasma-tail disconnection events (DEs), which occurred in Halley's comet on March 20-22 and April 11-12, 1986, during the ICE-Halley radial period, are analyzed using the ICE magnetometer and electron plasma data. It is concluded that the DE of March 20-22 was most likely caused by an IMF polarity reversal. The DE of April 11-12 on the other hand, is attributed to either a compression region in the solar wind, an IMF polarity reversal, or a combination of the two. Assuming that the two DEs are due to frontside reconnection after an IMF reversal, it was estimated that the time period between the onset of reconnection and the final disconnection of the tail is between 0.1 and 0.6 day, suggesting that the average speed at which reconnection proceeds through the cometary magnetic field pile-up region is between 1 and 6 km/sec, or several tenths of the local Alfven speed. |
| NASA分類 | ASTROPHYSICS |
| レポートNO | 88A23440 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/372808 |
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