{
  "id": "2009.08245",
  "version": "v1",
  "published": "2020-09-16T16:22:57.000Z",
  "updated": "2020-09-16T16:22:57.000Z",
  "title": "Type Ia Supernovae from wide white-dwarfs triples",
  "authors": [
    "Erez Michaely"
  ],
  "comment": "Comments are welcomed. arXiv admin note: text overlap with arXiv:2008.01094",
  "categories": [
    "astro-ph.HE"
  ],
  "abstract": "For ultra-wide systems (with outer orbit >$10^{3}{\\rm AU})$ the galactic field is collisional. Hence, ultra-wide triple white-dwarfs (TWDs) can be perturbed, by flyby stars, to sufficiently high outer eccentricity such that the triple becomes dynamically unstable. An unstable triple undergoes multiple binary-single resonant encounters between all three WDs. These encounters might result in a direct collision between any random two WDs and lead to a Type Ia supernova (SN) event. In case where the multiple resonant encounters did not produce a collision a compact binary is formed (while the third WD is ejected), this binary either collides or merges via gravitational wave emission, similar to the classic double-degenerate (DD) channel. In this research study we estimate the galactic rates of Type Ia SN from this channel to be $4\\%-46\\%$ and an addition of $1\\%-10\\%$ to the DD scenario.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2020-09-16T16:22:57.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "type ia supernova",
      "wide white-dwarfs triples",
      "triple undergoes multiple binary-single resonant",
      "undergoes multiple binary-single resonant encounters"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}