Can DESI DR1 geometry and observational selection support a three-dimensional map without introducing artificial structures?
Public summary of an internal test, not yet independently validated or published.
Question investigated
Can DESI DR1 geometry and observational selection support a three-dimensional map without introducing artificial structures?
Test conditions
Independently check the transformation from angular positions and redshifts to three-dimensional coordinates. Compare radial distributions and examine the official selection weights and corrections. Testing the three-dimensional survey window requires complete catalogs and the corresponding random catalogs.
Result
The coordinate conversion had an angular error of 4.72 × 10⁻¹⁶ rad, and the correlation between the compared radial distributions was 0.9502. These diagnostics do not complete validation of the three-dimensional survey window, which remains pending because the complete catalogs and random samples were unavailable.
Key figure
Correlation
0.95
Compared distributions
Source: Tower public snapshot
Specific limitations
- The analysis checks coordinate conversion and survey-selection effects. Geometric validation alone does not demonstrate a cosmological anomaly.
- Angular error and correlation are different metrics shown in separate panels. No error distribution, correlation uncertainty or complete 3D-window test is available.