The Local Supervoid centered roughly on our Local Group spans 150 to 250 Mly and shows replenishment-of-structure-formation-potential (RSFP) features: unusual dynamics in how structure forms within and around it, including unexpected infall patterns, peculiar galaxy velocities, and matter distributions (Keenan 2013; Whitbourn & Shanks 2014). The dynamics are difficult to reconcile with standard Gaussian initial conditions plus hierarchical structure growth.
The standard model assumes a homogeneous-isotropic FLRW background with structure growing hierarchically from Gaussian initial conditions. The RSFP features observed in the Local Supervoid require either a much more complex structure-formation history within voids or appeals to fine-tuned local initial conditions, neither of which is parsimonious.
SCT replaces the hot-dense-center with a superluminal collision and the thermalized debris field. From this single change, the Local Supervoid is one geometric element of the cascade-deposited cosmic web (P22, P34), with its RSFP features arising from the dynamical Λ_eff(x,t) field within the void interior. Locally enhanced Λ_eff (P17, P19) suppresses local structure-growth rate, manifesting as the deeper underdensity and slower in-void clustering that RSFP analyses detect.
Mesh dissipation (P14, P15, P16) gives the temporal evolution of the in-void Λ_eff field. Cosmic-web filament profiles bordering the supervoid (P34) set the inflow boundary conditions; angular-momentum inheritance (P31, P32) gives the boundary-region galaxies coherent rotation patterns at 50 to 200 km/s, matching the Tudorache 2025 filament-rotation observation when applied at the sub-filament scale. Multi-tracer DESI + 4MOST + MeerKAT analysis can resolve the directional structure of the in-void dynamics.
The same M4 framework that produces the KBC supervoid (recid 86), the Eridanus supervoid (recid 89), and the cosmic-web morphology produces the Local Supervoid RSFP. There is no need to invoke fine-tuned local initial conditions or new void-physics mechanisms. The void's unusual dynamics are the natural signature of embedded enhanced Λ_eff plus the cosmic-web filament boundaries that confine it.
If precision DESI + 4MOST + MeerKAT analysis of the Local Supervoid's in-void dynamics finds standard hierarchical-structure-growth signatures with no Λ_eff enhancement at the 0.5% level, the M4 cascade-stream supervoid explanation is refuted. The signature SCT prediction is in-void enhanced Λ_eff producing the observed RSFP features plus filament-boundary coherent rotation at the cascade-J amplitude.