论文标题
由旋转带电的黑洞铸造的阴影
Shadow cast by a rotating charged black hole in quintessential dark energy
论文作者
论文摘要
黑洞周围的典型深色能量的存在对其时空几何形状产生了相当大的影响。因此，在本文中，我们探讨了它对地平线的影响以及由典型的深色能量中的Kerr-Newman Black Hole产生的轮廓。此外，为了分析光的挠度角，我们利用高斯 - 骨网定理。获得的结果表明，由于拖动效应，黑洞旋转在旋转轴方向上延伸了其阴影，而增加了偏转角。另一方面，黑洞电荷减少了其阴影以及灯光偏转角度。此外，自旋和电荷都显着增加了黑洞阴影中的失真效果。典当参数γ增加了阴影半径，而在较高的电荷和旋转参数值下，会降低失真效果。
The existence of quintessential dark energy around a black hole has considerable consequences on its spacetime geometry. Hence, in this article, we explore its effect on horizons and the silhouette generated by a Kerr-Newman black hole in quintessential dark energy. Moreover, to analyze the deflection angle of light, we utilize the Gauss-Bonnet theorem. The obtained result demonstrates that, due to the dragging effect, the black hole spin elongates its shadow in the direction of the rotational axis, while increases the deflection angle. On the other hand, the black hole charge diminishing its shadow, as well as the angle of lights deflection. Besides, both spin and charge significantly increase the distortion effect in the black hole's shadow. The quintessence parameter γ, increases the shadow radius, while decreases the distortion effect at higher values of charge and spin parameters.
