| タイトル | Imaging Jupiter's aurorae from H3+ emissions in the 3-4 micrometers band |
| 著者（英） | Joseph, R. D.; Tennyson, J.; Owen, T.; Miller, S.; Baron, R.; Ballester, G. E. |
| 発行日 | 1991-10-10 |
| 言語 | eng |
| 内容記述 | Since H3+ was first spectroscopically detected on Jupiter, there has been considerable interest in using this simple molecular ion to probe conditions existing in the planet's auroral regions. Here we present a series of images of Jupiter recorded at wavelengths sensitive to emission by H3+, which reveal the spatial distribution of excited H3+ molecular ions in the jovian ionosphere, as seen from Earth. We believe that they provide high-spatial-resolution images of polar aurorae on Jupiter. They suggest that the intensity of the auroral emission can vary on a timescale of an hour, a shorter period than had previously been noted. We also find that the spatial distribution of H3+ emissions correlates only partially with the loci of auroral activity inferred from ultraviolet and longer-wavelength infrared observations. The H3+ emission may therefore be controlled by auroral processes that are different from those responsible for the ultraviolet and infrared emissions. |
| NASA分類 | Lunar and Planetary Science and Exploration |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/300187 |
|
