Wave optics of the spherical gravitational lens part I: Diffraction of a plane electromagnetic wave by a large star
Wave optics of the spherical gravitational lens part I: Diffraction of a plane electromagnetic wave by a large star
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球面引力透镜的波动光学第一部分：大恒星对平面电磁波的衍射
DOI：
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发表时间：
1976
期刊：
影响因子：
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通讯作者：
H. Stephani
中科院分区：
文献类型：
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作者：
E. Herlt;H. Stephani
本文给出了平面电磁波在一个大球体（比其史瓦西半径大）引力场衍射下的坡印亭矢量，并详细说明了这个球体作为引力透镜的工作原理。最有趣的结果是：(1)在天体后面远场的对称轴附近，强度会出现极大的放大，其放大倍数是史瓦西半径除以光的波长的10倍；(2)双重图像的出现，其形状和位置与几何光学的预测不同。
This paper gives the Poynting vector of a plane electromagnetic wave diffracted by the gravitational field of a large spherical body (large compared to its Schwarzschild radius) and shows in detail how this body works as a gravitational lens. The most interesting results are (1) an extreme amplification of intensity near to the axis of symmetry in the far field behind the body, with a factor of 10 times the Schwarzschild radius divided by the wavelength of the light, and (2) the appearance of double images, differing in shape and position from the predictions of geometrical optics.