{
  "id": "1510.07006",
  "version": "v1",
  "published": "2015-10-23T18:27:40.000Z",
  "updated": "2015-10-23T18:27:40.000Z",
  "title": "Cutoff in the Lyman α forest power spectrum: warm IGM or warm dark matter?",
  "authors": [
    "Antonella Garzilli",
    "Alexey Boyarsky",
    "Oleg Ruchayskiy"
  ],
  "comment": "6 pages, 5 figures. Comments are welcome",
  "categories": [
    "astro-ph.CO",
    "astro-ph.GA",
    "hep-ph"
  ],
  "abstract": "We re-analyse high redshift and high resolution Lyman-{\\alpha} forest spectra from Viel et al. [1] seeking to constrain properties of warm dark matter particles. Compared to the previous work we consider a wider range on thermal histories of the intergalactic medium and 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 re-ionisation models. We discuss how to remove this degeneracy.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2015-10-23T18:27:40.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "forest power spectrum",
      "warm igm",
      "cold dark matter models",
      "warm dark matter particles",
      "thermal histories"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 6,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2015arXiv151007006G",
      "inspire": 1400576
    }
  }
}