Version 2. 0 — Includes Supplementary MaterialsThis work presents a structural interpretation of the Baryonic Tully–Fisher Relation (BTFR) within the framework of Newtonian disk equilibrium and marginal stability. We demonstrate that: • The BTFR slope emerges from empirical size–mass scaling (Rd ∝ Mb⁰. 48) through geometric cancellation. • The intrinsic scatter floor (~0. 09 dex) arises naturally from structural dispersion in disk scale length (σₗog Rd ≈ 0. 18 dex). • The apparent galactic acceleration scale (~10⁻¹⁰ m s⁻²) emerges as a stability-driven fixed point under Toomre Q ≈ 1, without requiring modification of gravity. • High-redshift evolution provides a falsifiable observational discriminant between structural regulation and redshift-invariant acceleration hypotheses. Using the SPARC sample and mock JWST survey validation, this framework proposes that the BTFR represents a condition of structural self-organization in rotating stellar disks rather than a fundamental externally imposed law. The accompanying Supplementary Materials provide high-redshift predictions, mock catalog validation, and explicit observational discriminants.
Alim ul haq khan (Mon,) studied this question.