Observational signature and additional photon rings of an asymmetric thin-shell wormhole,Physical Review D

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Observational signature and additional photon rings of an asymmetric thin-shell wormhole
Physical Review D ( IF 4.6 ) Pub Date : 2021-12-02 , DOI: 10.1103/physrevd.104.124010
Jun Peng ₁ , Minyong Guo ₂ , Xing-Hui Feng ₃

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Recently, a distinct shadow mechanism was proposed by Wang et al. from the asymmetric thin-shell wormhole (ATW) [X. Wang et al., Phys. Lett. B 811, 135930 (2020)]. On the other hand, Gralla, Holz, and Wald’s work [Phys. Rev. D 100, 024018 (2019)] represented a nice description of photon rings in the presence of an accretion disk around a black hole. In this paper, we are inspired to thoroughly investigate the observational appearance of an accretion disk around the ATW. Although the spacetime outside an ATW with a throat could be identical to that containing a black hole with its event horizon, we show evident additional photon rings from the ATW spacetime. Moreover, a potential lensing band between two highly demagnified photon rings is found. Our analysis provides an optically observational signature to distinguish ATWs from black holes.

中文翻译：

不对称薄壳虫洞的观测特征和附加光子环

最近，Wang等人提出了一种独特的影子机制。来自不对称薄壳虫洞 (ATW) [X. 王等人。，物理。莱特。B 811 , 135930 (2020)]。另一方面，Gralla、Holz 和 Wald 的工作 [ Phys. 修订版 D 100, 024018 (2019)] 很好地描述了在黑洞周围存在吸积盘的情况下的光子环。在本文中，我们受到启发，彻底调查了 ATW 周围吸积盘的观测外观。尽管具有喉咙的 ATW 外部的时空可能与包含黑洞及其事件视界的时空相同，但我们展示了来自 ATW 时空的明显额外光子环。此外，发现了两个高度缩小的光子环之间的潜在透镜带。我们的分析提供了一个光学观测特征来区分 ATW 和黑洞。

更新日期：2021-12-02

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