Sgr~A* 黑洞对脉冲星光束弯曲的可观测性
Observability of pulsar beam bending by the Sgr~A* black hole
摘要：
根据一些模型，银河系中心可能有大量的射电望远镜。原则上，来自其中一个黑洞的光束可以通过中心的超大质量黑洞（SMBH）附近，被偏转，并被地球望远镜检测到。这样的配置将是一个前所未有的探测时空的性质在中等到强场制度的SMBH。我们在这里提出的问题的背景，和近似的概率检测这样的光束。我们的结论是，检测是勉强可能与目前的望远镜，但望远镜将在不久的将来，与适当的多年观测计划，将有一个很好的机会检测到一个光束偏转的SMBH。
英文摘要：
According to some models, there may be a significant population of radio pulsars in the Galactic center. In principle, a beam from one of these pulsars could pass close to the supermassive black hole (SMBH) at the center, be deflected, and be detected by Earth telescopes. Such a configuration would be an unprecedented probe of the properties of spacetime in the moderate- to strong-field regime of the SMBH. We present here background on the problem, and approximations for the probability of detection of such beams. We conclude that detection is marginally probable with current telescopes, but that telescopes that will be operating in the near future, with an appropriate multiyear observational program, will have a good chance of detecting a beam deflected by the SMBH.
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