CCEGA Validated Against Five Observational Datasets: NICER, GW170817, and PSR J0952-0607

We present a systematic validation of the CCEGA framework against five independent observational datasets. CCEGA predicts a density-dependent gravitational coupling Gₑff (ρ) = G·exp (−ρ/ρc) with ρc ≥ 10 ρₙuclear, producing neutron-star radii ~10% larger than GR and maximum masses ~5% larger. Against NICER mass-radius measurements, all three pulsars (J0437-4715, J0030+0451, J0740+6620) are consistent at ≤1. 0σ. Against GW170817, the predicted tidal deformability ratio ΛCCEGA/ΛGR = 1. 570 is consistent with the 90% credible interval for soft-to-moderate equations of state (ΛGR < 369). Against PSR J0952-0607 (M = 2. 35 ± 0. 11 M☉, Romani+2025), CCEGA provides a natural explanation: if the GR equation of state supports MₘaxGR = 2. 24 M☉, the 5% CCEGA enhancement gives MₘaxCCEGA = 2. 35 M☉ — exactly the observed value. No observation excludes CCEGA. The framework is consistent with all current neutron-star data, with decisive tests pending from LIGO O5 (tidal deformability), future NICER precision (radii), and the Einstein Telescope (gravitational-wave echoes, ~2035).