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arXiv 1302.7170gr-qc
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Ellis虫洞引力透镜中的波动效应

Wave Effect in Gravitational Lensing by the Ellis Wormhole

Chul-Moon Yoo, Tomohiro Harada, Naoki Tsukamoto

摘要:

我们建议使用调制光谱的天文来源,由于引力透镜探测埃利斯虫洞。计算了Ellis虫孔的引力透镜调制因子。在几何光学近似下,正常的质点透镜和埃利斯虫洞是无法区分的,除非我们知道光源的非透镜光度。如果我们考虑到与几何光学的偏差,这种简并在低频域中与显著的波效应一起解决。我们可以粗略估计的上限为$n\lesssim 10^{-9}\{AU}^{-3}$与喉半径$a\sim1\cm$从现有的飞秒透镜分析紧凑的对象的埃利斯虫洞的数量密度。

英文摘要:

We propose the use of modulated spectra of astronomical sources due to gravitational lensing to probe Ellis wormholes. The modulation factor due to gravitational lensing by the Ellis wormhole is calculated. Within the geometrical optics approximation, the normal point mass lens and the Ellis wormhole are indistinguishable unless we know the source's unlensed luminosity. This degeneracy is resolved with the significant wave effect in the low frequency domain if we take the deviation from the geometrical optics into account. We can roughly estimate the upper bound for the number density of Ellis wormholes as $n\lesssim 10^{-9}\{AU}^{-3}$ with throat radius $a\sim1\cm$ from the existing femto-lensing analysis for compact objects.

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