{
  "id": "astro-ph/0210468",
  "version": "v2",
  "published": "2002-10-21T14:53:42.000Z",
  "updated": "2002-10-25T13:00:10.000Z",
  "title": "Generalized Chaplygin gas and CMBR constraints",
  "authors": [
    "M. C. Bento",
    "O. Bertolami",
    "A. A. Sen"
  ],
  "comment": "4 pages, 3 figures, revtex4; results updated using Archeops data",
  "journal": "Phys.Rev. D67 (2003) 063003",
  "doi": "10.1103/PhysRevD.67.063003",
  "categories": [
    "astro-ph"
  ],
  "abstract": "We study the dependence of the location of the Cosmic Microwave Background Radiation (CMBR) peaks on the parameters of the generalized Chaplygin gas model, whose equation of state is given by $p = - A/\\rho^{\\alpha}$, where $A$ is a positive constant and $0 < \\alpha \\le 1$. We find, in particular, that observational data arising from Archeops for the location of the first peak, BOOMERANG for the location of the third peak, supernova and high-redshift observations allow constraining significantly the parameter space of the model. Our analysis indicates that the emerging model is clearly distinguishable from the $\\alpha = 1$ Chaplygin case and the $\\Lambda$CDM model.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2002-10-25T13:00:10.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "98.70.Vc",
      "98.80.Cq"
    ],
    "keywords": [
      "cmbr constraints",
      "cosmic microwave background radiation",
      "generalized chaplygin gas model",
      "cdm model",
      "third peak"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. D"
    },
    "note": {
      "typesetting": "RevTeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 600163
    }
  }
}