{
  "id": "1012.0444",
  "version": "v3",
  "published": "2010-12-02T14:57:53.000Z",
  "updated": "2011-12-15T05:21:15.000Z",
  "title": "Information Content in the Angular Power Spectrum of Weak Lensing: Wavelet Method",
  "authors": [
    "Hao-Ran Yu",
    "Joachim Harnois-Déraps",
    "Tong-Jie Zhang",
    "Ue-Li Pen"
  ],
  "comment": "10 pages, 6 figures. Accepted by MNRAS",
  "doi": "10.1111/j.1365-2966.2011.20360.x",
  "categories": [
    "astro-ph.CO"
  ],
  "abstract": "We quantify the performance of a non-linear Wiener filter, constructed in wavelet space, at recovering some of the Fisher information that was lost in the weak lensing convergence field. The proposed method consists in a separation of the original field into the sum of a Gaussian and a non-Gaussian contribution. After filtering an ensemble of such fields, which are obtained from $N$-body simulations, we find that we can recapture about four times more Fisher information, an effect that can potentially improve by a significant amount the constraining power of weak lensing surveys on cosmological parameters, including the dark energy equation of state $\\omega$. We compare this performance with that of the logarithmic mapping and find that the wavelet method can recover up to three times more information.",
  "revisions": [
    {
      "version": "v3",
      "updated": "2011-12-15T05:21:15.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "angular power spectrum",
      "wavelet method",
      "information content",
      "fisher information",
      "weak lensing convergence field"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "Wiley-Blackwell",
      "journal": "Monthly Notices of the Royal Astronomical Society",
      "year": 2012,
      "month": "Mar",
      "volume": 421,
      "number": 1,
      "pages": 832
    },
    "note": {
      "typesetting": "TeX",
      "pages": 10,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 879185,
      "adsabs": "2012MNRAS.421..832Y"
    }
  }
}