Telescope Array light-composition data
The argument
Because Telescope Array shower-maximum measurements are consistent with a predominantly protonic composition up to about 10^19 eV, and given that the Auger and Telescope Array shower-maximum data agree within their systematic uncertainties, the observations leave room for a substantial proton component through the ultra-high-energy range.
Does it work?
Not yet evaluated.
Premises
- 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 →Telescope Array shower-maximum measurements are consistent with a predominantly protonic composition up to about 10^19 eV
Where it is made
Passages where sources make, criticize or mention this argument. They record where it appears, not how strong it is, and none has precedence over another.
No source is recorded as making it.
Earlier ratings
- Jul 20, 2026
Granting its premises the argument shows the observations leave room for a large proton component, but only up to about 10^19 eV, below the extreme end the claim most naturally concerns. It rests on Telescope Array's compatibility with a predominantly protonic composition below 10^19 eV, which is not yet independently assessed, and on the joint working-group finding that the two experiments' shower-maximum data agree within systematics, a reading the assessment of the opposing Auger finding independently corroborates. It establishes that the question is open rather than that protons dominate, and like the opposing case it inherits the hadronic-model dependence recorded among the claim's assumptions.
- Jul 20, 2026
Granting its premises the argument shows the observations leave room for a large proton component, but only up to about 10^19 eV, below the extreme end the claim most naturally concerns. It rests on Telescope Array's compatibility with a predominantly protonic composition below 10^19 eV, which is not yet independently assessed, and on the joint working-group finding that the two experiments' shower-maximum data agree within systematics; it establishes that the question is open rather than that protons dominate, and like the opposing case it inherits the hadronic-model dependence recorded among the claim's assumptions.