The DOI matches its Crossref record; 79 of the 79 references it cites were found in a registry or an index.
Toward a Precise Measurement of Matter Clustering: Lyα Forest Data at Redshifts 2–4
Open accessAbstract
We measure the filling factor, correlation function, and power spectrum of transmitted flux in a large sample of Lyα forest spectra, comprised of 30 Keck HIRES spectra and 23 Keck LRIS spectra. We infer the linear matter power spectrum P ( k ) from the flux power spectrum P F ( k ), using an improved version of the method of Croft et al. that accounts for the influence of redshift-space distortions, nonlinearity, and thermal broadening on the shape of P F ( k ). The evolution of the shape and amplitude of P ( k ) over the redshift range of the sample ( z ≈ 2-4) is consistent with the predictions of gravitational instability, implying that nongravitational fluctuations do not make a large contribution to structure in the Lyα forest. Our fiducial measurement of P ( k ) comes from a subset of the data with 2.3 < z < 2.9, mean absorption redshift ⟨ z ⟩ = 2.72, and total path length Δ z ≈ 25. It has a dimensionless amplitude Δ 2 ( k p ) = 0.74 at wavenumber k p = 0.03 (km s -1 ) -1 and is well described by a power law of index ν = -2.43 ± 0.06 or by a CDM-like power spectrum with shape parameter Γ' = 1.3 × 10 -3 (km s -1 ) -1 at z = 2.72 (all error bars 1 σ). The correspondence to present-day P ( k ) parameters depends on the adopted cosmology. For Ω m = 0.4, Ω Λ = 0.6, the best-fit shape parameter is Γ = 0.16 h Mpc -1 , in good agreement with measurements from the 2dF Galaxy Redshift Survey, and the best-fit normalization is σ 8 = 0.82(Γ/0.15) -0.44 . Matching the observed cluster mass function and our measured Δ 2 ( k p ) in spatially flat cosmological models requires Ω m = 0.38 + 2.2(Γ - 0.15). Matching Δ 2 ( k p ) in COBE -normalized, flat CDM models with no tensor fluctuations requires Ω m = (0.29 ± 0.04) n -2.89 h , and models that satisfy this constraint are also consistent with our measured logarithmic slope. The Lyα forest complements other observational probes of the linear matter power spectrum by constraining a regime of redshift and length scale not accessible by other means, and the consistency of these inferred parameters with independent estimates provides further support for a cosmological model based on inflation, cold dark matter, and vacuum energy.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cites
Savitzky-Golay Smoothing Filters
Press, W. H., & Teukolsky, S. A. (1990) · Computers in Physics · doi:10.1063/1.4822961 · Cited by 11,670
The Sloan Digital Sky Survey: Technical Summary
York, D. G., Adelman, J., Anderson, Jr., Anderson, S. F., Annis, J., Bahcall, N. A., Bakken, J. A., Barkhouser, R., Bastian, S., Berman, E., et al. (2000) · The Astronomical Journal · doi:10.1086/301513 · Cited by 10,366
Self-citationThe Jackknife, the Bootstrap and Other Resampling Plans
Efron, B. (1982) · Society for Industrial and Applied Mathematics eBooks · doi:10.1137/1.9781611970319 · Cited by 8,120
The statistics of peaks of Gaussian random fields
Bardeen, J. M., Bond, J. R., Kaiser, N., & Szalay, A. S. (1986) · The Astrophysical Journal · doi:10.1086/164143 · Cited by 3,270
The Large-Scale Structure of the Universe
(2007) · Astronomy and Astrophysics Library · doi:10.1007/978-3-540-73478-9_2 · Cited by 3,219
The Keck Low-Resolution Imaging Spectrometer
Oke, J. B., Cohen, J. G., Carr, M., Cromer, J., Dingizian, A., Harris, F. H., Labrecque, S., Lucinio, R., Schaal, W., Epps, H., et al. (1995) · Publications of the Astronomical Society of the Pacific · doi:10.1086/133562 · Cited by 2,099
HIRES: the high-resolution echelle spectrometer on the Keck 10-m Telescope:
Vogt, S. S., Allen, S. L., Bigelow, B. C., Bresee, L., Brown, W. E., Cantrall, T., Conrad, A., Couture, M., Delaney, C., Epps, H. W., et al. (1994) · SPIE Proceedings · doi:10.1117/12.176725 · Cited by 1,606
Radiative Transfer in a Clumpy Universe. II. The Ultraviolet Extragalactic Background
Haardt, F., & Madau, P. (1996) · The Astrophysical Journal · doi:10.1086/177035 · Cited by 1,570
On the Density of Neutral Hydrogen in Intergalactic Space.
Gunn, J. E., & Peterson, B. A. (1965) · The Astrophysical Journal · doi:10.1086/148444 · Cited by 1,363
Four-Year [ITAL]COBE[/ITAL] DMR Cosmic Microwave Background Observations: Maps and Basic Results
Bennett, C. L., Banday, A. J., Górski, K. M., Hinshaw, G., Jackson, P., Keegstra, P., Kogut, A., Smoot, G. F., Wilkinson, D. T., & Wright, E. L. (1996) · The Astrophysical Journal · doi:10.1086/310075 · Cited by 1,242
Cited by
Spergel, D. N., Verde, L., Peiris, H. V., Komatsu, E., Nolta, M. R., Bennett, C. L., Halpern, M., Hinshaw, G., Jarosik, N., Kogut, A., et al. (2003) · The Astrophysical Journal Supplement Series · doi:10.1086/377226 · Cited by 10,976
Particle dark matter: evidence, candidates and constraints
Bertone, G., Hooper, D., & Silk, J. (2005) · Physics Reports · doi:10.1016/j.physrep.2004.08.031 · Cited by 4,979
Bennett, C. L., Halpern, M., Hinshaw, G., Jarosik, N., Kogut, A., Limon, M., Meyer, S. S., Page, L., Spergel, D. N., Tucker, G. S., et al. (2003) · The Astrophysical Journal Supplement Series · doi:10.1086/377253 · Cited by 4,860
THE BARYON OSCILLATION SPECTROSCOPIC SURVEY OF SDSS-III
Dawson, K. S., Schlegel, D. J., Ahn, C. P., Anderson, S. F., Aubourg, É., Bailey, S., Barkhouser, R. H., Bautista, J. E., Beifiori, A., Berlind, A. A., et al. (2013) · The Astronomical Journal · doi:10.1088/0004-6256/145/1/10 · Cited by 2,051
Self-citationFirst‐Year Wilkinson Microwave Anisotropy Probe ( WMAP ) Observations: Implications For Inflation
Peiris, H. V., Komatsu, E., Verde, L., Spergel, D. N., Bennett, C. L., Halpern, M., Hinshaw, G., Jarosik, N., Kogut, A., Limon, M., et al. (2003) · The Astrophysical Journal Supplement Series · doi:10.1086/377228 · Cited by 1,159
Metadata
- Authors
- Croft, R. A. C., Weinberg, D. H., Bolte, M., Burles, S., Hernquist, L., Katz, N., Kirkman, D., & Tytler, D.
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 2002-12-10
- Volume
- 581
- Issue
- 1
- Pages
- 20-52
- ISSN
- 0004-637X (ISSN-L)
- 1538-4357
- OpenAlex
- W2090436090
- Cited by
- 422
- References
- 79
- FWCI
- 28.56
- Type
- journal article
- Language
- en
- Open access
- bronze
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: Toward a Precise Measurement of Matter Clustering: Lyα Forest Data at Redshifts 2–4. https://app.cochat.ai/papers/10.1086/344099
- The paper
- Croft, R. A. C., Weinberg, D. H., Bolte, M., Burles, S., Hernquist, L., Katz, N., Kirkman, D., & Tytler, D. (2002). Toward a Precise Measurement of Matter Clustering: Lyα Forest Data at Redshifts 2–4. The Astrophysical Journal. https://doi.org/10.1086/344099
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
