Loeb describes predictions from simulations of assumed massless warp-bubble geometry and proposes observations. The essay is an account of a model, without a verified drive or detected warp bubble. Its interpretation of a June5 AARO report remains dependent on an original not yet read under the recorded access hold.
■ Complete supplied primary-author essay text; original media and record gaps
Shaun David Brocus Fell, Abraham Loeb. arxiv.org. August 11, 2026.
Fell and Loeb model radiation from an assumed zero-ADM-mass warp-bubble geometry in an atmosphere. Their relativistic aircraft-scale examples predict strong emission. The geometry-generating source and backreaction are omitted; heating, continuum validity and propagation introduce further limits. These conditional predictions constrain an interpretation, without detecting or demonstrating a drive.
Amir Siraj, Abraham Loeb. arxiv.org. September 20, 2022.
Siraj and Loeb infer unusually high breakup pressures for two reported meteors from catalogue inputs. IM1 reuses the earlier analysis; IM2 remains a candidate whose interstellar origin requires confirmation. Breakup pressure is a model proxy, rather than a laboratory composition measurement. Early weak flaring, corrected light-curve normalization, sensor bias and small-number population assumptions qualify the conclusions. This paper supplies no new government approach or classified-data receipt.
■ Received preprint text and native layouts; original validation gaps
Amir Siraj, Abraham Loeb. arxiv.org. February 4, 2019.
Siraj and Loeb model captured interstellar minor-body orbits using inherited density, population and size assumptions. Eight catalogue objects are possible candidates, not confirmed interstellar origins or extraterrestrial artifacts. Native Oort-cloud bodies are an explicit confound. Model convergence and forecasts do not supply independent observations. Native table, selection and population-normalization qualifications remain unresolved; detection bias and original calculation gaps are preserved. Manuscript assistance and work-level funding do not establish government tasking or custody.
■ All six supplied preprint pages and native layouts; candidate and model qualifications
James Lyons Walsh, Kevin H. Knuth. arxiv.org. November 8, 2014.
Walsh and Knuth extend an influence-network model to conditional force relations. Observer coordination, rate assignments and approximations underlie the calculation. They acknowledge incomplete understanding of a required connectivity condition. No empirical UAP mechanism is demonstrated.
Knuth develops an influence-network model that conditionally reproduces familiar1+1-dimensional physics relations. Coordinated observers and rate assignments are assumptions. He acknowledges a microscopic coordination problem; gravity extensions remain suggestions. The essay provides no UAP observation or independent empirical validation.
Knuth connects ordered-event projections and measurement-sequence inference to an at-rest 1+1-dimensional Dirac checkerboard model. Coordinated observers, local flatness and chosen amplitudes condition the construction. A mass relationship is hypothesized and higher-dimensional extension proposed. This theoretical lineage supplies context rather than independent UAP observations.
■ Complete supplied preprint text and selected native diagrams read
Loeb models a population mass budget for 3I/ATLAS and offers ordinary cometary-core or rarer-population alternatives. Technological design is conditional speculation; albedo, size, selection and reservoir assumptions remain explicit, with no artificial-origin detection or independent model validation.
■ Complete supplied three-page v2 manuscript; model and date gaps retained
Amir Siraj, Abraham Loeb. arxiv.org. October 5, 2020.
Siraj and Loeb forecast interstellar-object velocity and direction distributions from conventional stellar ejection. Their estimates distinguish 12-object velocity and 180-object angular tests of two ejection models from a separate 12-object anisotropy test. Density, size, sampling and detection assumptions remain uncertain. White-dwarf, outer-cloud and interstellar-medium alternatives are retained. Discovery forecasts and an artifact conjecture are not observations. Manuscript comments and work-level grant support do not establish government access.
■ Received written text and native layouts; originals and interpretation gaps
Manasvi Lingam, Abraham Loeb. arxiv.org. February 27, 2017.
Lingam and Loeb consider whether some fast radio bursts could be artificial propulsion beams. The paper presents conditional models and possible tests, explicitly treating the artificial explanation as more speculative than astrophysical alternatives.
■ Complete supplied v2 text and native layouts; model unreplicated
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