{
  "id": "1209.4720",
  "version": "v1",
  "published": "2012-09-21T06:52:43.000Z",
  "updated": "2012-09-21T06:52:43.000Z",
  "title": "Observations of the post shock break-out emission of SN 2011dh with XMM-Newton",
  "authors": [
    "Manami Sasaki",
    "Lorenzo Ducci"
  ],
  "comment": "Accepted for publication as a Research Note in Astronomy and Astrophysics",
  "categories": [
    "astro-ph.HE",
    "astro-ph.CO"
  ],
  "abstract": "After the occurrence of the type cIIb SN 2011dh in the nearby spiral galaxy M 51 numerous observations were performed with different telescopes in various bands ranging from radio to gamma-rays. We analysed the XMM-Newton and Swift observations taken 3 to 30 days after the SN explosion to study the X-ray spectrum of SN 2011dh. We extracted spectra from the XMM-Newton observations, which took place ~7 and 11 days after the SN. In addition, we created integrated Swift/XRT spectra of 3 to 10 days and 11 to 30 days. The spectra are well fitted with a power-law spectrum absorbed with Galactic foreground absorption. In addition, we find a harder spectral component in the first XMM-Newton spectrum taken at t ~ 7 d. This component is also detected in the first Swift spectrum of t = 3 - 10 d. While the persistent power-law component can be explained as inverse Compton emission from radio synchrotron emitting electrons, the harder component is most likely bremsstrahlung emission from the shocked stellar wind. Therefore, the harder X-ray emission that fades away after t ~ 10 d can be interpreted as emission from the shocked circumstellar wind of SN 2011dh.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2012-09-21T06:52:43.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "post shock break-out emission",
      "observations",
      "type ciib sn 2011dh",
      "first xmm-newton spectrum taken",
      "radio synchrotron emitting electrons"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1051/0004-6361/201220200",
      "journal": "Astronomy and Astrophysics",
      "year": 2012,
      "month": "Oct",
      "volume": 546
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 1187583,
      "adsabs": "2012A&A...546A..80S"
    }
  }
}