AI 中文总结
本文通过数值模拟研究了旋转Simpson-Visser黑洞在厚盘吸积下的阴影与偏振图像，发现正则化参数和自旋影响图像形状与强度，倾角改变形态，为探测黑洞时空结构提供新探针。
AI 中文摘要
在本文中，我们研究了被弹道近似吸积流模型包围的旋转Simpson-Visser黑洞的阴影和偏振图像。通过数值求解测地线和辐射传输方程，我们讨论了正则化参数$g$、自旋参数$a$以及观测者倾角$\ heta_o$在230 GHz频率下对落入运动产生的图像的影响。结果表明，观察到对应于高阶图像的明亮圆环，并伴有内部强度减弱的区域。$g$和$a$对高阶图像的大小影响很小，但显著改变了其形状和强度分布。而$\ heta_o$的变化改变了图像形态，在左侧产生新月形亮区。最后，偏振模式追踪了亮度分布，并随$g$和$a$变化，反映了时空结构。这些结果表明，厚盘模型中的强度和偏振为探测旋转Simpson-Visser黑洞及近视界吸积物理提供了探针。
英文摘要
In this manuscript, we investigate the shadow and polarization images of a Simpson-Visser rotating black hole surrounded by a ballistic approximation accretion flow model. Solving the numerically geodesic and radiative transfer equations, we discuss the influence of the regularization parameter $g$, spin parameter $a$, and observer inclination angle $θ_o$ on the resulting images at $230\,\mathrm{GHz}$ with an infalling motion. The results interpret that, a bright circular ring corresponding to higher-order images is observed, accompanied by an inner region of decreased intensity. Both $g$ and $a$ has little influence on the size of the higher-order images, but significantly changes their shape and intensity distribution. Whereas, variation in $θ_o$ modify the image morphology, producing a crescent-shaped bright region on the left side. Finally, the polarization patterns trace the brightness distribution and vary with both $g$ and $a$, reflecting the spacetime structure. These results demonstrates that the intensity and polarization in thick disk models provide probes of Simpson-Visser rotating black holes and near-horizon accretion physics.
Comments21 pages, 9 figures
