M87* Shadow Re-Read
The M87* shadow (diameter 42 +/- 3 mu-as) is consistent with the tau-Schwarzschild prediction theta_sh = 3 sqrt(3) GM/(c^2 d_L). Current polarimetric data cannot distinguish w_EVPA = 1 from w_EVPA = 2 within measurement uncertainties.
What this page is
This is a public Results-lane surface for a noteworthy Physics Registry item. It is generated from the Corpus Registry triage catalogue and keeps the generic Result catalogue unchanged.
Registry evidence
- Registry item: V.R197
- Type: remark
- Scope: tau-effective
- Lean status: not_applicable
- Book / part / chapter: Book V · Part 5 · Chapter 42
Result summary
The M87* shadow (diameter 42 +/- 3 mu-as) is consistent with the tau-Schwarzschild prediction theta_sh = 3 sqrt(3) GM/(c^2 d_L). Current polarimetric data cannot distinguish w_EVPA = 1 from w_EVPA = 2 within measurement uncertainties.
Related Results surfaces
Reading role
Use as Registry evidence for an existing Results surface.
Claim boundary
This page reports a Registry-backed internal result surface. It is not an external validation claim, a scientific consensus claim, or independent acceptance.
Curation rationale
- physics-facing terms: shadow
- result-facing terms: prediction
- candidate is better handled as evidence for an inferred existing public surface
Review notes
- No additional review notes recorded.