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Cited by 398

The DOI matches its Crossref record; 94 of the 94 references it cites were found in a registry or an index.

Lyman-α constraints on warm and on warm-plus-cold dark matter models

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Boyarsky, Alexey, Lesgourgues, Julien, Ruchayskiy, Oleg, Viel, Matteo·2009·Journal of Cosmology and Astroparticle Physics

Abstract

We revisit Lyman-α bounds on the dark matter mass in Λ Warm Dark Matter (ΛWDM) models, and derive new bounds in the case of mixed Cold plus Warm models (ΛCWDM), using a set up which is a good approximation for several theoretically well-motivated dark matter models. We combine WMAP5 results with two different Lyman-α data sets, including observations from the Sloan Digital Sky Survey. We pay a special attention to systematics, test various possible sources of error, and compare the results of different statistical approaches. Expressed in terms of the mass of a non-resonantly produced sterile neutrino, our bounds read m NRP ⩾ 8 keV (frequentist 99.7% confidence limit) or m NRP ⩾ 12.1 keV (Bayesian 95% credible interval) in the pure ΛWDM limit. For the mixed model, we obtain limits on the mass as a function of the warm dark matter fraction F WDM . Within the mass range studied here (5 keV < m NRP < ∞ ), we find that any mass value is allowed when F WDM < 0.6 (frequentist 99.7% confidence limit); similarly, the Bayesian joint probability on ( F WDM , 1/ m NRP ) allows any value of the mass at the 95% confidence level, provided that F WDM < 0.35.

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Metadata

Authors
Boyarsky, A., Lesgourgues, J., Ruchayskiy, O., & Viel, M.
Venue
Journal of Cosmology and Astroparticle Physics
Published
2009-05-20
Volume
2009
Issue
05
Pages
012-012
ISSN
  • 1475-7508 (ISSN-L)
  • 1475-7516
OpenAlex
W2104171741
Cited by
398
References
94
FWCI
14.65
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Lyman-α constraints on warm and on warm-plus-cold dark matter models. https://app.cochat.ai/papers/10.1088/1475-7516/2009/05/012
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Boyarsky, A., Lesgourgues, J., Ruchayskiy, O., & Viel, M. (2009). Lyman-α constraints on warm and on warm-plus-cold dark matter models. Journal of Cosmology and Astroparticle Physics. https://doi.org/10.1088/1475-7516/2009/05/012

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