The Interstellar Object ’Oumuamua as a Fractal Dust Aggregate

@article{Flekky2019TheIO,
  title={The Interstellar Object ’Oumuamua as a Fractal Dust Aggregate},
  author={E. Flekk{\o}y and J. Luu and R. Toussaint},
  journal={The Astrophysical Journal},
  year={2019},
  volume={885}
}
  • E. Flekkøy, J. Luu, R. Toussaint
  • Published 2019
  • Physics
  • The Astrophysical Journal
  • The first known interstellar object 'Oumuamua exhibited a nongravitational acceleration that appeared inconsistent with cometary outgassing, leaving radiation pressure as the most likely force. Bar the alien lightsail hypothesis, an ultra-low density due to a fractal structure might also explain the acceleration of 'Oumuamua by radiation pressure (Moro-Martin 2019). In this paper we report a decrease in 'Oumuamua's rotation period based on ground-based observations, and show that this spin-down… CONTINUE READING

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