arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2107.01599gr-qcastro-ph.HEastro-ph.IMphysics.optics
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扭曲光,广义相对论及其他领域的新工具

Twisted light, a new tool for General Relativity and beyond

Fabrizio Tamburini, Fabiano Feleppa, Bo Thidé

摘要:

我们描述并提出了第一个观测证据,即光在旋转的黑洞附近传播是扭曲的相位,并携带轨道角动量。这种物理观测的新用途,作为一个额外的工具,以前已知的引力透镜技术,使我们能够直接测量,第一次,自旋参数的黑洞。利用轨道角动量中编码的附加信息,我们不仅可以揭示致密物体的实际旋转,而且还可以将旋转黑洞作为探针来检验广义相对论。

英文摘要:

We describe and present the first observational evidence that light propagating near a rotating black hole is twisted in phase and carries orbital angular momentum. The novel use of this physical observable as an additional tool for the previously known techniques of gravitational lensing allows us to directly measure, for the first time, the spin parameter of a black hole. With the additional information encoded in the orbital angular momentum, not only can we reveal the actual rotation of the compact object, but we can also use rotating black holes as probes to test General Relativity.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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