{
  "id": "1408.1375",
  "version": "v2",
  "published": "2014-08-06T18:58:42.000Z",
  "updated": "2014-12-07T22:30:49.000Z",
  "title": "Constraining the double-degenerate scenario for Type Ia supernovae from merger ejected matter",
  "authors": [
    "Naveh Levanon",
    "Noam Soker",
    "Enrique García-Berro"
  ],
  "comment": "7 pages. Accepted to MNRAS",
  "categories": [
    "astro-ph.SR",
    "astro-ph.HE"
  ],
  "abstract": "We follow the mass expelled during the WD-WD merger process in a particular case of the Double-Degenerate (DD) scenario for Type Ia supernovae (SNe Ia), and find that the interaction of the SN ejecta with the resulting wind affects the early (first day) light curve in a way that may be in conflict with some SN Ia observations, if the detonation occurs shortly after the merger (i.e., $10^3~{\\rm sec} \\lesssim t_{\\rm exp} \\lesssim 1~{\\rm day}$). The main source of the expelled mass is a disk-wind, or jets that are launched by the accretion disk around the more massive WD during the viscous phase of the merger. This disk-originated matter (DOM) will be shocked and heated by the SN ejecta from an explosion, leading to additional radiation in the early lightcurve. This enhanced early radiation could then be interpreted as an explosion originating from a progenitor having an inferred radius of one solar radius or more, in conflict with observations of SN 2011fe.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2014-08-06T18:58:42.000Z",
      "abstract": "We follow the mass blown during the WD-WD merger process in the Double-Degenerate (DD) scenario for type Ia supernovae (SN Ia), and find that the interaction of the SN ejecta with this wind affects the early (<1 day) light curve in a way that may contradict observations, if the detonation occurs during or shortly after the merger (<1 day). The main source of the blown mass is a disk-wind, or jets that are launched by the accretion disk around the more massive WD. This disk-originated matter (DOM) will be shocked by the SN ejecta and kinetic energy will be channeled to thermal energy and then to additional radiation. The radiation could be interpreted as an explosion originating from a progenitor having a radius of one solar radius or more, contradicting observations of SN 2011fe.",
      "comment": "14 pages. Submitted",
      "journal": null,
      "doi": null
    },
    {
      "version": "v2",
      "updated": "2014-12-07T22:30:49.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "type ia supernovae",
      "merger ejected matter",
      "double-degenerate scenario",
      "sn ejecta",
      "wd-wd merger process"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1093/mnras/stu2580",
      "journal": "Monthly Notices of the Royal Astronomical Society",
      "year": 2015,
      "month": "Mar",
      "volume": 447,
      "number": 3,
      "pages": 2803
    },
    "note": {
      "typesetting": "TeX",
      "pages": 7,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 1309987,
      "adsabs": "2015MNRAS.447.2803L"
    }
  }
}