Version 4 of the NVG magnetar preprint. This version incorporates a comprehensive population-level statistical audit and multi-messenger validation tests based on the latest McGill catalog (N=25, including Swift J1555. 2-5402). Key advances over V3: 1. Population-level statistical audit: Reconstruction of magnetar masses via NVG TOV equations under fixed progenitor surface field (Bₛeed=30 kG) yields realistic masses 1. 10–2. 30 M☉. Young magnetar sub-population (τ0|data) =97. 5%. 2. Multi-messenger and laboratory predictions: (a) FAIR/NICA dilepton Breit-Wigner peak significance >3σ for 10 pb⁻¹; (b) Post-merger gravitational-wave f₂ frequency shift −0. 40 to −3. 55 Hz (detectable by Einstein Telescope within 40 Mpc) ; (c) Virtual dark photon cooling suppression factor 9. 3×10⁻²⁵ in LMXB crusts. 3. Fallback-disk corridor for 1E 161348-5055: Propeller/fallback-disk model reproduces the observed period within remnant-age corridor using ordinary magnetar-strength fields (B~3×10¹⁴–10¹⁵ G), without requiring unrealistically large dipole fields. 4. Comparison with competing mechanisms: Quantitative differentiation from Thompson-Duncan turbulent dynamo and Ferrario-Wickramasinghe fossil-field models based on SNR energetics, birth-spin distributions, and high-B progenitor field statistics. Repository: https: //github. com/infosave2007/vmfZenodo: https: //zenodo. org/records/20214457
Oleg Yuryevich Kirichenko (Fri,) studied this question.