论文标题
旋转广告时时期的常规黑洞及其阴影
Rotating regular black holes in AdS spacetime and its shadow
论文作者
论文摘要
黑洞周围的光子区域的存在是通过远处观察者从黑洞附近接收发射光谱的重要特征。在本文中，我们研究了旋转常规抗DE保姆（AD）黑洞的光学特性，其特征在于其质量$ $（m）$，spin参数$（a）$，偏差参数$（k）$和宇宙学常数$（λ）$（λ）$，与curvator curvation radius通过$（λ= -3/l^2）$相关。我们在外部通信的域中得出了完整的运动运动运动方程，并在给定的boyer-lindquist坐标（$ r_o，\; \ \ vartheta_o $）上研究观察者的不稳定的圆形轨道（$ r_O，\ \ \ vartheta_o $）。对于我们研究的分析部分，我们研究了可观察到的物品，即Shadow Radius $（R_S）$和失真参数$（δ_s）$。这些旋转的常规广告黑色孔与Kerr和常规空间相比，阴影较小。我们还估计了黑洞的能量排放速率。
The presence of a photon region around the black hole is an essential feature in receiving the emitted spectrum from the vicinity of the black hole by the distant observer. In this paper, we investigate the optical properties of rotating regular anti-de Sitter (AdS) black holes, which characterized by its mass $(M)$, spin parameter $(a)$, deviation parameter $(k)$ and the cosmological constant $(Λ)$ related to the curvature radius via $(Λ=-3/l^2)$. We derive the complete null geodesic equations of motion and study the unstable circular orbits for an observer at given Boyer-Lindquist coordinates ($r_O,\;\vartheta_O$) in the domain of outer communication and trace the photon rings. For the analytical part of our study, we investigate the observables, namely, shadow radius $(R_s)$ and distortion parameter $(δ_s)$. These rotating regular AdS black holes have smaller shadows when compare to the Kerr and regular spacetimes. We also estimate the energy emission rate of the black hole.
