Thiem Hoang, Abraham Loeb. arxiv.org. March 24, 2023.
Hoang and Loeb argue that evaporative cooling changes a trapped-hydrogen explanation for ’Oumuamua’s acceleration. The critique depends on selected thermal assumptions and does not establish an artificial origin.
Amir Siraj, Abraham Loeb, Amaya Moro-Martin, Mark Elowitz, Abigail White, Wesley A. Watters, Gary J. Melnick, Richard Cloete, Jonathan Grindlay, Frank Laukien. arxiv.org. November 3, 2022.
Siraj, Loeb and colleagues outline requirements for a proposed interstellar-object intercept. Detection and reachability forecasts depend on assumptions; material analogues and modelled spectra do not identify an artificial object.
Vo Hong Minh Phan, Thiem Hoang, Abraham Loeb. arxiv.org. October 28, 2021.
Phan, Hoang and Loeb model erosion and modification of icy interstellar objects under assumed cosmic-ray, material and travel conditions. Prior observations and fits support theoretical predictions rather than new detections or demonstrated composition.
■ Complete supplied seven-page manuscript; conditional erosion model
Amir Siraj, Abraham Loeb. arxiv.org. October 15, 2021.
Siraj and Loeb assess whether nitrogen-ice fragments could account for the earlier Oumuamua detection. Their conclusion depends on population and mass-budget assumptions; no new data are generated or analyzed.
■ Complete supplied three-page manuscript; conditional mass-budget model
Avi Loeb, Lucas Perry. futureoflife.org. July 9, 2021.
Loeb develops his interpretation of interstellar objects, possible technosignatures and future observations, while recounting scientific and academic conversations. Natural alternatives and missing data remain explicit. UAP and ‘Oumuamua are distinguished; no personal classified briefing or government invitation is supplied. Speculative probabilities and policy proposals are not completed tests.
Thiem Hoang, Abraham Loeb. arxiv.org. August 12, 2020.
Hoang and Loeb model destruction and formation of pure hydrogen ice under assumed radiation, material and cloud conditions. They challenge one proposed explanation of Oumuamua while retaining environmental exceptions; no hydrogen object is observed and no artificial origin is established.
■ Complete supplied eight-page manuscript; conditional hydrogen-ice model
John C. Forbes, Abraham Loeb. arxiv.org. January 2, 2019.
Forbes and Loeb forecast near-Sun interstellar-body encounters and propose spectroscopy. Encounter rates and candidate probabilities depend on uncertain density, orientation, population and detection assumptions. Listed probabilities do not confirm individual origins. Ordinary cometary explanations, bound-orbit caveats and an ISON non-detection remain explicit. Parameter and catalogue-filter discrepancies are unresolved. Forbes’s fellowship is distinct from work-level grant support; neither establishes government access.
■ Received written text and native layouts; original-record and interpretation gaps
Shmuel Bialy, Abraham Loeb. arxiv.org. October 26, 2018.
Bialy and Loeb develop a conditional radiation-pressure explanation for ’Oumuamua’s acceleration. Thin natural material and an artificial sail are discussed as possibilities; the calculations do not identify a spacecraft.
Loeb favors a manufactured origin for Oumuamua while acknowledging inconclusive observations and unsettled origins. In the offered sample he also reports an unnamed high-level US-government official visiting his front door to request his thoughts on Ukrainian UAP reports. The visit is his firsthand account; the official’s identity, agency and exact date and the underlying records remain unknown. A request for scientific opinion does not establish programme access, custody or alien origin.
■ Entire offered visual sample read; complete book remains unread
Loeb’s publisher-authorized excerpt presents technological origin for ‘Oumuamua as a hypothesis, acknowledges disagreement and calls for more data. Its trajectory illustration is explanatory rather than a new measurement. Historical advisory roles are self-description; the excerpt contains no classified-briefing or recovered-material account.
Amir Siraj, Abraham Loeb. arxiv.org. June 7, 2019.
Siraj and Loeb combine reported detections and non-detection limits to propose meteor trajectory, spectroscopy and sample tests. The administrator flags substantial text overlap with their earlier meteor paper; IM1 and Oumuamua are reused. The allowed slope range is not a demonstrated confidence interval. Camera coverage, parent-star association, isotopes and sample recovery are forecasts, rather than achieved results. Ordinary alternatives and source discrepancies remain.
■ Received preprint text and native layouts; overlap and original gaps
A curated public selection. Source review describes what was read; it does not establish that a claim is true. Our research approach