论文标题
与黑洞空间相关的虫洞的微透镜作用
Microlensing effects of wormholes associated to blackhole spacetimes
论文作者
论文摘要
在本文中，我们研究了与黑洞空间相关的虫洞的微透明作用。具体来说，我们研究了三个典型的虫洞（WH）：Schwarzschild WH，Kerr WH和RN WH及其黑洞对应关系。我们使用高斯河网定理在弱场近似下评估二阶偏转角。然后，我们使用数字研究它们的放大倍数。我们发现Kerr WH可能会导致放大倍数的多峰，并在Prograde情况下具有某些参数，而Kerr BH则预测了一个峰。因此，可以使用多峰值功能将Kerr WH与其他紧凑对象区分开。我们还发现，与RN WH相比，RN BH的放大倍数将是一个峰，在某些情况下，RN WH的放大倍数为负。对于其他情况，虫洞及其相应黑孔的放大倍率相似。我们的结果可能会通过微透镜效果来探索紧凑的物体的新启示。
In this paper, we investigate the microlensing effects of wormholes associated to black hole spacetimes. Specifically, we work on three typical wormholes (WH): Schwarzschild WH, Kerr WH, and RN WH, as well as their blackhole correspondences. We evaluate the deflection angle upon the second order under weak field approximation using Gauss-Bonnet theorem. Then, we study their magnification with numerics.We find that a Kerr WH could lead to multi peaks in the magnification with certain parameters in the prograde case, while a Kerr BH predicts one peak. Therefore, the multi-peak feature of can be used to distinguish the Kerr WH from other compact objects. We also find that the magnification of RN BH will be one peak compared to RN WH, in which the magnification of RN WH is negative in some situations. For other cases, the behavior of magnification from wormholes and their corresponding blackholes is similar. Our result may shed new light on exploring compact objects through the microlensing effect.
