{
  "id": "1708.07836",
  "version": "v1",
  "published": "2017-08-25T18:00:01.000Z",
  "updated": "2017-08-25T18:00:01.000Z",
  "title": "The Local Dark Matter Density from SDSS-SEGUE G-dwarfs",
  "authors": [
    "Sofia Sivertsson",
    "Hamish Silverwood",
    "Justin I. Read",
    "Gianfranco Bertone",
    "Pascal Steger"
  ],
  "comment": "17 pages, 10 figures, submitted to MNRAS",
  "categories": [
    "astro-ph.GA",
    "hep-ph"
  ],
  "abstract": "We derive the local dark matter density by applying the integrated Jeans equation method from Silverwood et al. (2016) to SDSS-SEGUE G-dwarf data processed and presented by B\\\"udenbender et al. (2015). We use the MultiNest Bayesian nested sampling software to fit a model for the baryon distribution, dark matter and tracer stars, including a model for the 'tilt term' that couples the vertical and radial motions, to the data. The $\\alpha$-young population from B\\\"udenbender et al. (2015) yields the most reliable result of $\\rho_{\\rm DM} = 0.46^{+0.07}_{-0.09}\\, {{\\rm GeV\\, cm}^{-3}} = 0.012^{+0.001}_{-0.002}\\, {{\\rm M}_\\odot \\, {\\rm pc}^{-3}}$. Our analyses yield inconsistent results for the $\\alpha$-young and $\\alpha$-old data, pointing to problems in the tilt term and its modelling, the data itself, the assumption of a flat rotation curve, or the effects of disequilibria.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2017-08-25T18:00:01.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "local dark matter density",
      "sdss-segue g-dwarf",
      "tilt term",
      "analyses yield inconsistent results",
      "flat rotation curve"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 17,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}