Visualization of Slow Spatiotemporal Correlated Structures Around a Spherical Object

Previous studies demonstrated that weak optical fluctuations surrounding suspended metallic spheres exhibit mass-dependent temporal persistence and spatially extended statistical correlations under broadband incoherent illumination. The present study extends these observations by investigating whether such weak correlated structures possess measurable source-centered local spatiotemporal organization. Using time-resolved image sequences, local texture patches were analyzed using a source-centered patch-based cross-correlation drift framework. Reliable local radial drift events were extracted through predefined quality filtering criteria, allowing quantitative characterization of their spatial population distributions. The analysis revealed large populations of inward and outward local radial drift events distributed across the observation region. These populations exhibited measurable source-centered spatial organization characterized by radial extension over multiple spatial shells, broad angular coverage, and locally varying inward/outward directional composition. Comparative analyses demonstrated that radial drift populations were present in both the high-mass spherical source and noise control conditions, while the high-mass spherical source condition exhibited a more pronounced source-centered radial drift organization characterized by a larger radial drift population and stronger spatial organization. These results provide a complementary dynamical description of previously observed mass-dependent temporal persistence and extended spatial correlations. Together, the combined observations suggest a phenomenological picture involving mass dependence, spatial extension, and structured source-centered radial drift dynamics. Although the present observations do not constitute direct evidence of gravitational-wave tails, the identified tail-like characteristics exhibit qualitative similarities to slowly evolving and spatially distributed delayed-response structures discussed in gravitational-wave tail phenomena. The present approach provides an experimental framework for visualizing and quantifying weak source-centered spatiotemporally correlated structures embedded within stochastic optical backgrounds.