Black Stars: Ultracompact Objects from Emergent Gravity and Dual Spectral Resonance

We propose a theoretical framework for a class of astrophysical objects referred to asblack stars: ultracompact configurations that are gravitationally stable without possessingclassical event horizons. In this approach, spacetime curvature and gravitational responseemerge from an underlying vacuum dynamics, while electromagnetic radiation undergoesnon-dissipative spectral confinement driven by a dual resonance mechanism. As a result,these objects appear observationally black not due to causal disconnection, but due to spec-tral trapping and redistribution beyond detectable frequency bands. This framework providesan alternative interpretation of compact dark objects that avoids singularities, preserves in-formation, and remains compatible with effective field-theoretic descriptions of gravity andelectromagnetism.