The DOI matches its Crossref record; 17 of the 17 references it cites were found in a registry or an index.
The Lyman-Alpha Forest in the Cold Dark Matter Model
Open accessAbstract
Cosmological simulations with gas provide a detailed description of the intergalactic medium, which makes possible predictions of neutral hydrogen absorption in the spectra of background QSOs. We present results from a high-resolution calculation of an Ω = 1 cold dark matter model. Our simulation reproduces many of the observed properties of the Lyα forest surprisingly well. The distribution of H I column densities agrees with existing data to within a factor of ~2 over most of the range from 10 14 cm -2 to 10 22 cm -2 ; i.e., from unsaturated Lyα forest lines to damped Lyα systems. The equivalent width distribution matches the observed exponential form with a characteristic width W * ≈ 0.3 Å. The distribution of b -parameters appears consistent with that derived from QSO spectra. Most of the low column density absorption arises in large, flattened structures of moderate or even relatively low overdensity, so there is no sharp distinction between the Lyα forest and the "Gunn-Peterson" absorption produced by the smooth intergalactic medium. Our results demonstrate that a Lyα forest like that observed develops naturally in a hierarchical clustering scenario with a photoionizing background. Comparison between simulations and high-resolution QSO spectra should open a new regime for testing theories of cosmic structure formation.
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
Smoothed particle hydrodynamics: theory and application to non-spherical stars
Gingold, R. A., & Monaghan, J. J. (1977) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/181.3.375 · Cited by 7,272
A numerical approach to the testing of the fission hypothesis
Lucy, L. B. (1977) · The Astronomical Journal · doi:10.1086/112164 · Cited by 6,181
Smoothed Particle Hydrodynamics
Monaghan, J. J. (1992) · Annual Review of Astronomy and Astrophysics · doi:10.1146/annurev.aa.30.090192.002551 · Cited by 4,957
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
TREESPH - A unification of SPH with the hierarchical tree method
Hernquist, L., & Katz, N. (1989) · The Astrophysical Journal Supplement Series · doi:10.1086/191344 · Cited by 1,010
The amplitude of mass fluctuations in the Universe
White, S. D. M., Efstathiou, G., & Frenk, C. S. (1993) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/262.4.1023 · Cited by 519
Gravitational collapse of small-scale structure as the origin of the Lyman-alpha forest
Cen, R., Miralda-Escude, J., Ostriker, J. P., & Rauch, M. (1994) · The Astrophysical Journal · doi:10.1086/187670 · Cited by 451
Sargent, W. L. W., Young, P. J., Boksenberg, A., & Tytler, D. (1980) · The Astrophysical Journal Supplement Series · doi:10.1086/190644 · Cited by 331
Gravitational collapse of small-scale structure as the origin of the Lyman alpha forest
Cen, R., Miralda-Escudé, J., & Ostriker, J. P. (1994) · CERN Document Server (European Organization for Nuclear Research) · Cited by 301
Self-citationDeuterium abundance and background radiation temperature in high-redshift primordial clouds
Songaila, A., Cowie, L. L., Hogan, C. J., & Rugers, M. (1994) · Nature · doi:10.1038/368599a0 · Cited by 268
Cited by
The cosmological simulation code gadget-2
Springel, V. (2005) · Monthly Notices of the Royal Astronomical Society · doi:10.1111/j.1365-2966.2005.09655.x · Cited by 6,368
The EAGLE project: simulating the evolution and assembly of galaxies and their environments
Schaye, J., Crain, R. A., Bower, R. G., Furlong, M., Schaller, M., Theuns, T., Dalla Vecchia, C., Frenk, C. S., McCarthy, I. G., Helly, J. C., et al. (2015) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/stu2058 · Cited by 3,601
Observational Constraints on Cosmic Reionization
Fan, X., Carilli, C. L., & Keating, B. (2006) · Annual Review of Astronomy and Astrophysics · doi:10.1146/annurev.astro.44.051905.092514 · Cited by 788
The large-scale structure of the Universe
Springel, V., Frenk, C. S., & White, S. D. M. (2006) · Nature · doi:10.1038/nature04805 · Cited by 780
A NEW CALCULATION OF THE IONIZING BACKGROUND SPECTRUM AND THE EFFECTS OF He II REIONIZATION
Faucher-Giguère, C.-A., Lidz, A., Zaldarriaga, M., & Hernquist, L. (2009) · The Astrophysical Journal · doi:10.1088/0004-637x/703/2/1416 · Cited by 699
Metadata
- Authors
- Hernquist, Katz, Weinberg, & Miralda-Escudé, J.
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 1996-02-01
- Volume
- 457
- Issue
- 2
- ISSN
- 0004-637X (ISSN-L)
- OpenAlex
- W2037624693
- Cited by
- 438
- References
- 17
- FWCI
- 36.63
- 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: The Lyman-Alpha Forest in the Cold Dark Matter Model. https://app.cochat.ai/papers/10.1086/309899
- The paper
- Hernquist, Katz, Weinberg, & Miralda-Escudé, J. (1996). The Lyman-Alpha Forest in the Cold Dark Matter Model. The Astrophysical Journal. https://doi.org/10.1086/309899
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.
