Journal
PHYSICS LETTERS B
Volume 773, Issue -, Pages 258-264Publisher
ELSEVIER
DOI: 10.1016/j.physletb.2017.08.022
Keywords
Cosmology, Warm dark matter, Large scale structure of Universe; Methods, Numerical, Observational; Quasars, Absorption lines
Funding
- European Research Council under the European Union's Seventh Framework Programme/ERC [278594-GasAroundGalaxies]
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We re-analyse high redshift and high resolution Lyman-alpha forest spectra considered in[ 1], seeking to constrain the properties of warm dark matter particles. Compared to this previous work, we consider a wider range of thermal histories of the intergalactic medium. We find that both warm and cold dark matter models can explain the cut-off observed in the flux power spectra of high-resolution observations equally well. This implies, however, very different thermal histories and underlying reionization models. We discuss how to remove this degeneracy. (C) 2017 Published by Elsevier B.V.
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