AI 中文总结
【一句话总结】构建一类有闵可夫斯基核心和有限双视界结构的渐近平直静态及旋转规则黑洞解，用引力解耦框架得到，研究其光学特征，发现不同内部几何有相近光学特征。
AI 中文摘要
【完整翻译】我们构建了一个新的渐近平直静态和旋转规则黑洞家族，其特征是具有闵可夫斯基核心和有限的双视界结构。这些解是在引力解耦框架内获得的，提供了具有规则内部和明确渐近性质的非奇异黑洞几何的解析易处理实现。我们通过阴影可观测量和几何薄、光学薄吸积盘的光线追踪图像来研究旋转时空的光学外观。尽管这些解的内部几何与奇异黑洞有很大差异，但发现它们的光学特征与具有相同渐近参数的史瓦西和克尔时空的光学特征非常接近。我们的结果表明，明显不同的黑洞内部可能导致几乎无法区分的光学外观，突出了使用当前阴影和成像观测探测致密天体内部结构的挑战。
英文摘要
We construct a new family of asymptotically flat static and rotating regular black holes characterized by a Minkowskian core and a finite two-horizon structure. The solutions are obtained within the framework of gravitational decoupling and provide an analytically tractable realization of non-singular black hole geometries with a regular interior and well-defined asymptotic properties. We investigate the optical appearance of the rotating spacetime through shadow observables and ray-traced images of geometrically thin, optically thin accretion disks. Despite the substantial differences between the interior geometry of these solutions and that of singular black holes, their optical signatures are found to remain remarkably close to those of Schwarzschild and Kerr spacetimes with the same asymptotic parameters. Our results show that markedly different black hole interiors may lead to nearly indistinguishable optical appearances, highlighting the challenges of probing the internal structure of compact objects using current shadow and imaging observations.
Comments13 pages, 9 figures, Updated Reference List
