Paper XXXVII of the Brane-Bulk Series Sump Modications to the Schwarzschild Radius and the Chandrasekhar Limit B. D. Jagadeesan, MD

The T2/T2* framework modies compact object astrophysics through three channels: (1) external modication of the potential landscape around black holes (the ve-zone structure); (2) time-varying Chandrasekhar mass M_Ch(z) ∝H(z)6 enabling super-Chandrasekhar collapses at high redshift; (3) T2/T2* eects on compact object formation environments and merger rates. The event horizon itself is essentially unmoved (correction δr_s/r_s ∼(r_s/r_T2*)2 ∼10−22), but the ve-zone structure creates a physically distinct saddle point at r = r_T2* that sets the galactic rotation curve scale, the M_BH-σ relation, and the LRD compact sizes (15-150 light days for M_BH = 105-107 M_M⊙). The Chandrasekhar limit modication predicts super-Chandrasekhar BH seeds at z = 5-10 in the mass range 104-106 M_M⊙, consistent with the revised LRD BH masses (Nature 2026). Six new predictions (Predictions 50-55) follow from this analysis. Part of the One-Octonion Brane-Bulk Framework series. Anchor DOI: 10.5281/zenodo.19120873. Community: one-octonion-brane-bulk. Author: Bharathi Dasan Jagadeesan, M.D., University of Minnesota. ORCID: 0000-0002-1143-941X.