Chaotic dynamics of wide triples induced by galactic tides: A novel channel for producing compact binaries, mergers and collisions

@article{Grishin2021ChaoticDO,
  title={Chaotic dynamics of wide triples induced by galactic tides: A novel channel for producing compact binaries, mergers and collisions},
  author={Evgeni Grishin and Hagai B. Perets},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2021}
}
  • Evgeni GrishinH. Perets
  • Published 21 December 2021
  • Physics, Geology
  • Monthly Notices of the Royal Astronomical Society
Recent surveys show that wide (>104 AU) binaries and triples are abundant in the field. We study the long-term evolution of wide hierarchical triple systems and the role played by the Galactic tidal (GT) field. We find that when the timescales of the secular von-Ziepel-Lidov-Kozai and the GT oscillations are comparable, triple evolution becomes chaotic which leads to extreme eccentricities. Consequently, the close pericentre approaches of the inner-binary components lead to strong… 

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References

Stellar Interiors

  • Foundations of Astrophysics
  • 2020