{
  "id": "0901.0562",
  "version": "v1",
  "published": "2009-01-05T21:40:22.000Z",
  "updated": "2009-01-05T21:40:22.000Z",
  "title": "ARCADE 2 Observations of Galactic Radio Emission",
  "authors": [
    "A. Kogut",
    "D. J. Fixsen",
    "S. M. Levin",
    "M. Limon",
    "P. M. Lubin",
    "P. Mirel",
    "M. Seiffert",
    "J. Singal",
    "T. Villela",
    "E. Wollack",
    "C. A. Wuensche"
  ],
  "comment": "10 poges, 9 figures. Submitted to The Astrophysical Journal",
  "journal": "Astrophys.J.734:4,2011",
  "doi": "10.1088/0004-637X/734/1/4",
  "categories": [
    "astro-ph.GA"
  ],
  "abstract": "We use absolutely calibrated data from the ARCADE 2 flight in July 2006 to model Galactic emission at frequencies 3, 8, and 10 GHz. The spatial structure in the data is consistent with a superposition of free-free and synchrotron emission. Emission with spatial morphology traced by the Haslam 408 MHz survey has spectral index beta_synch = -2.5 +/- 0.1, with free-free emission contributing 0.10 +/- 0.01 of the total Galactic plane emission in the lowest ARCADE 2 band at 3.15 GHz. We estimate the total Galactic emission toward the polar caps using either a simple plane-parallel model with csc|b| dependence or a model of high-latitude radio emission traced by the COBE/FIRAS map of CII emission. Both methods are consistent with a single power-law over the frequency range 22 MHz to 10 GHz, with total Galactic emission towards the north polar cap T_Gal = 0.498 +/- 0.028 K and spectral index beta = -2.55 +/- 0.03 at reference frequency 1 GHz. The well calibrated ARCADE 2 maps provide a new test for spinning dust emission, based on the integrated intensity of emission from the Galactic plane instead of cross-correlations with the thermal dust spatial morphology. The Galactic plane intensity measured by ARCADE 2 is fainter than predicted by models without spinning dust, and is consistent with spinning dust contributing 0.4 +/- 0.1 of the Galactic plane emission at 22 GHz.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2009-01-05T21:40:22.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "galactic radio emission",
      "total galactic emission",
      "spinning dust",
      "observations",
      "total galactic plane emission"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "journal": "The Astrophysical Journal",
      "year": 2011,
      "month": "Jun",
      "volume": 734,
      "number": 1,
      "pages": 4
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 810335,
      "adsabs": "2011ApJ...734....4K"
    }
  }
}