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ShowingImportancePrizesTopicHillas Rigidity Criterion1 claim

The Hillas rigidity criterion and related acceleration limits: maximum particle rigidity (E/Z ≈ eBRβ) attainable in a source of size R and field B, and comparisons of source cutoff rigidities (e.g., neutron stars, pulsars, AGN) with the rigidities of observed ultra-high-energy cosmic rays.

A typical neutron star's magnetic cutoff rigidity exceeds the rigidities of most observed ultra-high-energy cosmic rays.
UnassessedNo current assessment. Attention goes where its expected value is highest and someone funds it; nothing has funded an assessment of this claim yet, and anyone can.constitution →empirical · derivedA factual claim that rests on inference from other evidence rather than direct observation.constitution →Cosmic raysNeutron Star Exotic Physicsimportance · settledImportance 0.15, from 0 to 1 · settled: uncontested, so low even when much depends on it. Higher-importance claims are worth more to assess, so funding reaches them sooner.constitution →

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