CosmicThinker25/Columbus-Axis-Confirmed-CHIME2: Columbus Rotational Scan Data — CHIME/FRB Catalog 2

This work represents the third pillar of a research program that began as a speculative idea and has gradually solidified into a coherent and testable cosmological framework. The proposed Siamese Axis, rooted in a CPT-symmetric two-universe model—where our universe has a time-reversed twin—first emerged as a geometric prediction before appearing as a statistical feature in real data. The first study ("Testing CPT-Symmetric Siamese Universes through FRB–QSO Sky Correlations", v1.3) examined angular correlations between distant FRBs and deep quasar distributions. A subtle but coherent directional excess appeared near (RA ≈ 170°, Dec ≈ 40°). It was the first hint—an observational echo of a theoretical axis. The second study ("Rotational Hemispheric Test around a Siamese CPT-Symmetric Axis with Fast Radio Bursts", v1.7) introduced the Columbus Rotational Scan, a new rotational-hemispheric method capable of distinguishing true cosmological anisotropies from instrumental footprints. Using CHIME/FRB Catalog 1, the analysis revealed a clear sinusoidal modulation in ΔDM(ψ), peaking exactly along the predicted Siamese direction. The fit was remarkably strong (R² ≈ 0.60, p_perm ≈ 5×10⁻⁴), indicating structured azimuthal variation rather than a simple dipole or density excess—a signature of phase, not matter. This third paper takes a new dataset—CHIME/FRB Catalog 2, larger, noisier, and more heterogeneous—and repeats the same test: the Columbus Scan around the Siamese Axis. Despite the increased irregularity of the data, the signal reappears, this time with an even stronger fit (R² ≈ 0.87) and a nearly identical phase φ₀ ≈ 133.6°, matching both Catalog 1 and the FRB–QSO results. The amplitude changes, as expected in a dataset with uneven sky coverage, but the phase remains fixed. This directional stability across independent datasets is the hallmark of a genuine cosmological structure. Taken together, the three studies form a coherent sequence: Initial correlation-based detection (FRB–QSO). Clear rotational detection (CHIME/FRB Catalog 1). Independent confirmation with a new dataset (CHIME/FRB Catalog 2). All point to the same axis, within just a few degrees. No known instrumental artifact generates stable phases across independent analyses. No simple matter dipole yields a rotational mode without triggering a hemispheric one. No random fluctuation produces such persistent sinusoidal structure. For the first time, the Siamese cosmological framework—built on phase interference, CPT symmetry, and directional desynchronization—shows both internal coherence and external consistency: a theoretical axis predicted in advance now aligns with a reproducible statistical signature in the sky. This paper does not "prove" the model in an absolute sense, but it strengthens it unmistakably. The Siamese Axis persists, resists, and returns. A once-hypothetical axis is beginning to look like a real geometric feature of the cosmos, awaiting deeper mapping by upcoming surveys from CHIME/FRB Catalog 3 to DSA-2000 and the SKA. Fast Radio Bursts, FRB Anisotropy, CHIME/FRB Catalog 2, Columbus Rotational Scan, Hemispheric Test, Sky Modulation, Cosmological Directionality, Siamese Axis, CPT Symmetry, Azimuthal Structure, Large-Scale Structure, Rotational Cosmology, Statistical Astrophysics, Directional Phase, Cosmological Tests, Reproducible Research, Astrophysical Data Analysis, Sky Correlations, Dipole Modulation, Anisotropy Detection