论文标题
Rastall Gravity中带电的黑洞的阴影和光子球
The shadow and photon sphere of the charged black hole in Rastall gravity
论文作者
论文摘要
考虑到一个带有完美的流体辐射场（PFRF）包围的带电的黑洞（BH），我们在不同的球形积聚背景上研究了这个BH阴影和光子球。通过研究该BH附近的光偏转，研究了PFRF参数/BH电荷对关键冲击参数的影响。这些BH阴影在不同球形积聚中的光度分别得到了。据发现，带有插入球形积聚的BH的阴影比静态球形积聚更暗，并且带有插入球形积聚的光子球比静态振动更明亮。我们创造性地研究了BH电荷/PFRF参数对BH阴影和光子球的光度的影响。结果表明，BH阴影是时空几何形状的签名，并且光子球的光度受到增生材料和BH本身的影响。
Considering a charged black hole (BH) surrounded by a perfect fluid radiation field (PFRF) in Rastall gravity, we investigate this BH shadow and photon sphere on different spherical accretions backgrounds. The effect of the PFRF parameter/BH charge on the critical impact parameter is studied by investigating the light deflection near this BH. The luminosity of these BH shadows in different spherical accretions is obtained, respectively. It is found that the shadow of this BH with infalling spherical accretion is darker than static spherical accretion, and the photon sphere with infalling spherical accretion is brighter than a static one. We creatively investigate the effects of the BH charge/PFRF parameter on the luminosity of BH shadow and photon sphere. The results implying that the BH shadow is a signature of space-time geometry, and the photon sphere luminosity is affected by accretion materials and BH itself.
