This preprint presents a physics-strict reconstruction of the GW150914 gravitational-wave chirp derived entirely from the Ultronic Medium Hypothesis (UMH), a framework that models spacetime as a mechanically real, Lorentz-invariant tensioned wave medium. Gravitational waves are treated as coherent mechanical strain propagating through this medium, rather than as perturbations of spacetime geometry. An intrinsic inspiral–merger–ringdown waveform is generated from first principles using a dedicated UMH chirp generator, without post-Newtonian expansions beyond Newtonian order, numerical-relativity calibration, effective-one-body modeling, or phenomenological waveform fitting. The generated chirp is compared to LIGO Hanford and Livingston data using a strictly independent analysis pipeline that permits only a single global time and polarity alignment across detectors. The UMH waveform reproduces the observed GW150914 morphology, including instantaneous frequency evolution, amplitude growth, merger timing, spectrogram structure, and ringdown frequency, without per-detector tuning, frequency remapping, or phase warping. Agreement is evaluated using whitened time-domain overlays, Hilbert-derived instantaneous frequency tracks, amplitude spectral density comparisons, and spectrogram morphology. All source–observer scaling, including amplitude normalization, phase accumulation, and time dilation, is fixed by a single tension-based calibration previously established using Pantheon+ Type Ia supernova data and applied without further adjustment. The results demonstrate that a first-principles, medium-based model can reproduce the full gravitational-wave chirp structure observed by LIGO using fewer modeling assumptions than standard template-based approaches. This work serves as an observational test of the Ultronic Medium Hypothesis in the strong-field gravitational-wave regime and complements prior cosmological applications of the framework.
Andrew Dodge (Sun,) studied this question.