For the first time, we use the Event Horizon Telescope (EHT) data to constrain the parameters of braneworld black holes which constrain ϵ = 0.0285+0.0888+0.1456-0.0895-0.1475 for the anisotropic black hole and q = -0.0305+0.1034+0.1953-0.0895-0.1470 for the tidal Reissner-Nordström (RN) black hole. Based on the fitted data and physical requirement, we calculate the photon deflection, the angular separation and time delay between different relativistic images of the anisotropic black hole and the tidal RN black hole in the ranges -0.1190 < ϵ < 0 and -0.1775 < q < 0. And furthermore, we study the quasinormal modes (QNMs) for the braneworld black holes. The results shed light on existence of extra dimension.

中文翻译：

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强镜头作为 braneworld 的探针


我们首次使用事件视界望远镜 （EHT） 数据来约束布兰世界黑洞的参数，这些参数约束ε各向异性黑洞的 = 0.0285+0.0888+0.1456-0.0895-0.1475，潮汐 Reissner-Nordström （RN） 黑洞的 q = -0.0305+0.1034+0.1953-0.0895-0.1470。根据拟合数据和物理要求，我们计算了各向异性黑洞和潮汐 RN 黑洞在不同相对论图像之间的光子偏转、角间隔和时间延迟，范围为 -0.1190 < ε < 0 和 -0.1775 < q < 0。此外，我们还研究了 braneworld 黑洞的准法则模 （QNM）。结果揭示了额外维度的存在。