Type Ia supernovae from wide white dwarfs triples

  title={Type Ia supernovae from wide white dwarfs triples},
  author={Erez Michaely},
  journal={arXiv: High Energy Astrophysical Phenomena},
  • E. Michaely
  • Published 16 September 2020
  • Physics
  • arXiv: High Energy Astrophysical Phenomena
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… Expand
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