Plasma–Electromagnetic Signature and Propulsion Envelope Hypothesis (PESPEH): An Independent Technical Hypothesis for a Subset of UAP Observables

This independent technical monograph presents the Plasma–Electromagnetic Signature and Propulsion Envelope Hypothesis (PESPEH), a working hypothesis for a subset of unidentified anomalous phenomena (UAP) observables. The central proposal is that some reported Tic Tac-like objects, metallic orbs, classical disc-shaped craft, and other structured UAP may exhibit plasma and electromagnetic effects as an observable outer layer: infrared-only visibility, luminous envelopes, radar intermittency, electronic interference, apparent cloaking, and non-conventional hover or motion. The document evaluates whether known plasma physics, electromagnetism, electrohydrodynamics, magnetohydrodynamics, radar-plasma interactions, infrared signatures, and electromagnetic interference mechanisms can explain part of this observational pattern. The monograph does not claim proof of extraterrestrial origin, recovered craft, or experimentally verified antigravity. It treats natural atmospheric plasma phenomena as an important control case, but the primary purpose is to develop a falsifiable technological hypothesis in which plasma and electromagnetic effects may be sensor-facing signatures of a deeper propulsion, energy-density, inertia-management, or gravity-modification-like system. The work includes order-of-magnitude calculations, equations, evidence grading, skeptical controls, failure modes, and an instrumentation plan for future multispectral testing. It is intended as an independent technical hypothesis and discussion document, not a peer-reviewed article.