A Hypothetical Model of the Universe Based on Cosmic Microwave Background Radiation and the Observable Universe (Part VI)

Based on the dynamical model of central white hole ejection, this paper conducts a physical kinematic analysis of the observed anomaly of the giant cold spot in the Eridanus constellation of the cosmic microwave background (CMB). By sorting out the limitations of the primordial fluctuation and baryon acoustic oscillation (BAO) theories in the ΛCDM model in explaining the cold spot, it is pointed out that the ultra‑large‑scale, extremely low‑temperature, non‑Gaussian, and anisotropic characteristics of the cold spot cannot be fully described by the existing mainstream framework. This paper proposes that the cold spot originates from the rate difference of radial ejection from the central white hole of the universe, corresponding to a high‑speed outflow channel near the boundary of the observable universe, and gives a dimensional estimation relationship between temperature anomaly and ejection velocity difference. Meanwhile, the cosmic isotropy is re‑expressed as a local approximation of the observable universe rather than a global property. All inferences in this paper are based on classical physical deductions using existing CMB observation data; the observational predictions proposed in this paper are long‑term goals and depend on the gradual construction and operation of the next‑generation observation equipment (e.g., SKA is expected to be fully operational in the 2030s). This study aims to provide a complementary research idea for the CMB anomalous structure and cosmic regionality issues, and does not claim to replace the ΛCDM model.