论文标题
LQG的观察性预测sgr a*和m87*的聚合黑洞和约束
Observational predictions of LQG motivated polymerized black holes and constraints from Sgr A* and M87*
论文作者
论文摘要
环量子重力启发了四维时空中的部分聚合物量化，导致一个具有单一地平线的全球常规黑洞。聚合黑洞度量标准的特征是最小长度参数$ k $，并模仿弱场限制中的Schwarzschild黑洞。我们介绍了强力透镜和阴影形态的分析和数值研究，以确定量子效应的观察性影响。有趣的是，光偏转角，最外面相对论图像之间的角度分离和放大倍数明显大于Schwarzschild黑洞的距离。使用射线追踪技术，我们在三个不同的光学薄积分模型下模拟黑洞阴影：静态球形积聚，径向插入的球形增生和薄的积聚磁盘模型。聚合黑洞的阴影形态在很大程度上取决于$ k $。我们从M87*和SGR A* Black Hole Shadow观察结果中得出了$ K $的约束。
Loop quantum gravity inspired partial polymer quantization in four-dimensional spacetime leads to a globally regular black hole with a single horizon. The polymerized black hole metric is characterized by the minimum length parameter $k$, and mimics the Schwarzschild black hole in the weak-field limit. We present an analytic and numerical investigation of the strong gravitational lensing and shadow morphology to determine the observational impacts of quantum effects. Interestingly, the light deflection angle, the angular separation between the outermost relativistic image, and magnification are significantly larger than those for the Schwarzschild black hole. Using the ray-tracing technique, we simulate the black hole shadows under three distinct optically thin accretion models: static spherical accretion, radially infalling spherical accretion, and the thin accretion disk model. Polymerized black holes' shadow morphology strongly depends on $k$. We derive constraints on $k$ from the M87* and Sgr A* black hole shadow observations from the Event Horizon Telescope.
