发表机构
Universidade Federal do Ceará (UFC)（塞阿拉联邦大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文推导了对称黑弹跳几何的唯象约束，发现物质参数在弱场和强场中均主导约束，而弹跳参数仅通过光子轨道存在条件影响强场阴影。
AI 中文摘要
在这项工作中，我们推导了由各向异性流体支持的对称黑弹跳几何的唯象约束。我们研究了弹跳参数和物质参数对经典及强场可观测量的影响，考虑了近日点进动、光线偏折、夏皮罗时间延迟和黑洞阴影。在弱场区域，我们获得了对相应广义相对论预言的解析修正，并利用太阳系测量来约束参数空间。我们发现，物质参数通常比最小半径尺度受到更强的约束，这反映了弱场可观测量对弹跳参数的依赖性受到抑制。在强场区域，我们表明渐近阴影半径直接依赖于物质参数，而弹跳参数通过外部不稳定光子轨道的存在条件进入，而非通过对阴影大小的独立修正。这些结果突显了物质参数和弹跳参数在弱场和强场可观测量中的不同作用，并为对称黑弹跳几何的参数空间提供了互补约束。
英文摘要
In this work, we derive phenomenological constraints on a symmetric black-bounce geometry supported by an anisotropic fluid. We investigate the effects of the bounce parameter and the matter parameter on classical and strong-field observables, considering the perihelion advance, light deflection, Shapiro time delay, and black-hole shadow. In the weak-field regime, we obtain analytical corrections to the corresponding general-relativistic predictions and use Solar-System measurements to constrain the parameter space. We find that the matter parameter is generally constrained more strongly than the minimum-radius scale, reflecting the suppressed dependence of weak-field observables on the bounce parameter. In the strong-field regime, we show that the asymptotic shadow radius depends directly on the matter parameter, whereas the bounce parameter enters through the existence condition of the outer unstable photon orbit rather than through an independent correction to the shadow size. These results highlight the distinct roles played by the matter and bounce parameters in weak- and strong-field observables and provide complementary constraints on the parameter space of the symmetric black-bounce geometry.
Comments25 pages, 4 figures
