Interferometry of the intensity fluctuations in light IV. A test of an intensity interferometer on Sirius A
Interferometry of the intensity fluctuations in light IV. A test of an intensity interferometer on Sirius A
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光强度波动的干涉测量 IV。
DOI：
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发表时间：
1958
期刊：
影响因子：
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通讯作者：
R. Twiss
中科院分区：
文献类型：
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作者：
R. H. Brown;R. Twiss
一个实验强度干涉仪已建成两个探照灯镜和天狼星上测试。当两个反射镜靠得很近时，所观察到的相关性与理论上预期的一致。这一结果支持了本系列第三部分中的预测，即强度干涉仪的性能不应受到大气闪烁的显著影响。天狼星的观测是用四个不同的基线进行的，随着基线长度的增加，相关性的降低与理论是一致的。观测结果已被用来推导出天狼星角直径的实验值，它与天体物理理论给出的值是很好的一致。这一初步实验的结果在很大程度上证实了第三部分得出的一般性结论。
An experimental intensity interferometer has been constructed with two searchlight mirrors and tested on Sirius. The correlation observed with the two mirrors close together was found to be in good agreement with that expected theoretically. This result supports the prediction, made in part III of the present series, that the performance of an intensity interferometer should not be significantly affected by atmospheric scintillation. Observations of Sirius were carried out with four different baselines and the decrease of correlation with increasing baseline length was found to be consistent with theory. The observed results have been used to derive an experimental value for the angular diameter of Sirius which is in good agreement with the value given by astrophysical theory. The results of this preliminary experiment confirm, to a considerable extent, the general conclusions reached in part III.