This article proposes a structural reading of extreme astrophysical and cosmological regimes as vortex-limit structures. Primordial transition, neutron stars, magnetars, and black holes are compared through three primary modalities of saturation-boundary dynamics: inverted vortex, edge vortex, and horizon vortex. These modalities describe, respectively, unfolding from saturation, persistence near saturation, and completion into a causal boundary. The framework brings together drain-vortex dynamics, coupled gradient constraints, magnetic and topological organization, oscillatory behavior, recurrent local reconfiguration, and long-term regime resilience. Rather than treating extreme systems as isolated cases, the article compares how each regime organizes saturation, boundary formation, configurational slack, observable traces, and local redistribution of constraint. It also introduces candidate constraint forms as preliminary sketches for expressing how gradients and boundary variables may become mutually restrictive within each modality. The result is an exploratory regime grammar intended to clarify research routes for primordial observables, compact objects, horizon dynamics, trace-based diagnostics, and laboratory extensions of extreme-regime analysis.
Daniel Avilés Hurtado (Sun,) studied this question.