AWhat changed
Using spectra of 48,640 quasars from BOSS DR9, the analysis measured the three-dimensional correlation of Lyman-alpha forest transmission at mean absorber redshift about 2.3 and identified a peak near the expected baryon acoustic scale. This extended the acoustic-distance method to an intergalactic absorption tracer at high redshift.
Scientific scope
Using spectra of 48,640 quasars from BOSS DR9, the analysis measured the three-dimensional correlation of Lyman-alpha forest transmission at mean absorber redshift about 2.3 and identified a peak near the expected baryon acoustic scale. This extended the acoustic-distance method to an intergalactic absorption tracer at high redshift. This v1 analysis estimates 3.0 or 4.2 sigma for two continuum methods under a specified fit, and reports strong dependence on fitting range; the 15 mock spectra do not reproduce all data characteristics. Its distance constraints are relative to a fiducial sound horizon, while precise H(z), deceleration and dark-energy statements use additional data and cosmological assumptions. A subsequent analysis uses the same DR9 sample and is not an independent new survey.
Evidence
The linked original works support the scoped statement and contribution attribution. WRS has not independently replayed experiments or reconstructed a full mathematical proof. This v1 analysis estimates 3.0 or 4.2 sigma for two continuum methods under a specified fit, and reports strong dependence on fitting range; the 15 mock spectra do not reproduce all data characteristics. Its distance constraints are relative to a fiducial sound horizon, while precise H(z), deceleration and dark-energy statements use additional data and cosmological assumptions. A subsequent analysis uses the same DR9 sample and is not an independent new survey.
Contributors
- The named authors in the research record · SCIENCE: These are the listed authors of the cited contribution sources. Paper authorship does not quantify individual effort. An incomplete list is explicitly marked; same names are not automatically merged.
Provisional WRS assessment, edition 2026-10-28.1. Independent expert calibration is pending. This grade does not certify correctness or assign ownership.
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