论文标题
旋转的海沃德·德·保姆的阴影黑色孔，带有星形可观察
Shadows of rotating Hayward-de Sitter black holes with astrometric observables
论文作者
论文摘要
最近的旋转黑洞阴影的工作激励[Phys。 Rev. D101，084029（2020）]，我们研究了旋转的Hayward-De Sitter黑洞的阴影行为，以在天文观测值方面在有限的距离处进行静态观察者。本文在[Arxiv：2006.00685]中使用新引入的失真参数来定量描述阴影的形状。我们表明，旋转参数会扭曲阴影，而磁性单极电荷会增加变形程度。同时，由于宇宙常数，由于距黑洞的距离会增加失真，因此失真会增加。此外，自旋参数，磁单电荷电荷和宇宙常数增加将导致阴影缩小。
Motivated by recent work on rotating black hole shadow [Phys. Rev. D101, 084029 (2020)], we investigate the shadow behaviors of rotating Hayward-de Sitter black hole for static observers at a finite distance in terms of astronomical observables. This paper uses the newly introduced distortion parameter in [arXiv:2006.00685] to describe the shadow's shape quantitatively. We show that the spin parameter would distort shadows and the magnetic monopole charge would increase the degree of deformation. At the same time, the distortion could be relieved because of the cosmological constant and the distortion would increase with the distance from the black hole. Besides, the spin parameter, magnetic monopole charge and cosmological constant increase will cause the shadow to shrink.
