Apparent changes in the rotation rate of Jupiter
Apparent changes in the rotation rate of Jupiter
复制标题
木星自转速度的明显变化
DOI：
10.1016/0019-1035(67)90062-0
复制
发表时间：
1967
期刊：
影响因子：
3.2
通讯作者：
G. Dulk
中科院分区：
文献类型：
--
作者：
G. Dulk
从十月发射概率直方图得出的木星自转速率的表观变化与通过比较辐射的动态谱得出的变化不同。动态光谱表明，在1960年至1965年期间，两个主要的辐射“源”向相反的方向移动。直方图特征的漂移和光谱特征的漂移部分归因于发射光束发散，因为地球的变化，部分是由于稍微不正确的系统III的周期。观测结果可以用一个模型来解释，在这个模型中，木星的大部分辐射（特别是与木卫一有关的辐射）是从木星的北方半球以一个薄的圆锥形薄片发射的。在地球上，我们观察到两个区域，在那里片交叉黄道平面。
The apparent change of Jupiter's rotation rate derived from decameter emission probability histograms is shown to differ from the change derived by comparing dynamic spectra of the radiation. The dynamic spectra indicate that the two major “sources” of radiation shifted longitudes in opposite directions over the period from 1960 through 1965. The drift of histogram features and the drift of spectral features is attributed partly to emission beam divergence as the Earth's declination changes, and partly to a slightly incorrect System III period. The observations are explained by a model in which much of Jupiter's emission (especially the Io-related emission) is beamed in a thin conical sheet from Jupiter's northern hemisphere. On Earth, we observe the two regions where the sheet crosses the ecliptic plane.