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BOSS detects an acoustic peak in the Lyman-alpha forest

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.

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What is recorded here?

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.

Source-linked catalogue note. A detailed explanatory guide has not yet been prepared for this entry.

Scientific scope

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.

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People and systems

Nicolás G. Busca

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. The recorded author list is incomplete.

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English catalogue narrative

BOSS detects an acoustic peak in the Lyman-alpha forest

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

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.

Reading status

This is a source-linked WRS catalogue note. A full explanatory guide and independent scientific reconstruction have not been completed for this entry. Read the identified original work for its complete narrative and arguments.

People and systems

Nicolás G. Busca

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.

Original sources