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Before Sputnik · source record · preprint

Storm-Driven Suppression and Post-Storm Enhancement of Photographic Plate Transient Detections at Geosynchronous Altitude: Empirical Evidence and a Candidate Dusty Plasma Mechanism

Cann, K. · 2026

AI-verified citationSRC-CANN-2026C
identifier / locator
arXiv: 2604.06234 (submitted 2026-04-04, v1)
url
https://arxiv.org/abs/2604.06234
verification note
Title, sole authorship, submission date, primary category (astro-ph.IM) and full abstract read on the arXiv record 2604.06234 (2026-08-24 watch batch). Body text not read; all figures below are the abstract's own.
reliability notes
  • Third Cann preprint in this case (with SRC-CANN-2026 and SRC-CANN-2026B) and not independent of them: it builds on the first as an established result and shares the same author and the same 107,875-object catalog lineage.
  • Preregisters its recovery-profile test — rare in this dispute and worth crediting on its own — but reports the combined significance as a range (3.6–4.7 sigma) that the paper says depends on an independence assumption it does not establish.
  • Opens by asserting that its predecessor 'ruled out emulsion defects' and confirmed the transients as real; that is the paper's characterisation of its own earlier work, not a finding this case accepts (see the reliability note on SRC-CANN-2026).
  • The dusty-plasma mechanism is offered as a candidate, and the paper itself states multi-site replication is required.

Evidence drawn from this source

Qualifies· weakTRN-E020

Cann 2026c: preregistered post-storm recovery profile, and a natural near-Earth mechanism

what the source states
A preregistered test of transient detection rates after geomagnetic storms reports rates suppressed to 55% of baseline on days 7–21 and raised to 309% of baseline on days 25–45 (p = 0.00066, Wilcoxon rank-sum), which combined with the earlier dose-response result the paper puts at 3.6–4.7 sigma by Fisher's method, the range reflecting sensitivity to an independence assumption. It proposes a candidate mechanism: storm-enhanced electromagnetic trapping of charged micrometeoroid dust near L ≈ 6.6, then aggregation of icy cometary grains as cold plasmaspheric conditions return. A flux-dilution argument gives a partially reflective icy aggregate 1–4 m across as sufficient to reach the observed plate magnitude at 42,000 km. The paper states that multi-site replication is required.
what we infer
Recorded as qualifying rather than supporting because of what it does to the ladder rather than what it adds to it. The case has been framed as chemistry versus artificial reflectors; this proposes a third family — real near-Earth objects that are natural. If it held, it would leave TRN-C021 (near-Earth origin) standing while removing the reason to believe TRN-C022 (artificial objects), and it would explain the population's disappearance after 1957 without invoking anyone's hardware. Its weight is low: single author, preprint, unreplicated, a candidate mechanism by the paper's own description, and the same catalog lineage as everything else in the ensemble dispute. The preregistration is a genuine methodological credit in a case where the absence of preregistration is a recurring finding.
limitations
  • Not peer reviewed; single author; the paper itself calls for multi-site replication.
  • Third preprint by the same author in this case and not independent of the other two — it treats SRC-CANN-2026 as having established that the transients are real, which this case does not accept.
  • Same 107,875-object catalog as the analyses it extends, so like them it cannot bear on whether the candidates are sky events at all (TRN-C020).
  • Combined significance is reported as a range whose width depends on an independence assumption the abstract does not justify.
  • Abstract read; body text and preregistration record not examined for this entry.
Cann, K. (2026)AI-verified citationTRN-C021TRN-C022