Could 1I/’Oumuamua be an Icy Fractal Aggregate?

  title={Could 1I/’Oumuamua be an Icy Fractal Aggregate?},
  author={Amaya Moro-Mart'in},
  journal={The Astrophysical Journal},
  • A. Moro-Mart'in
  • Published 11 February 2019
  • Geology, Physics
  • The Astrophysical Journal
1I/'Oumuamua was the first interstellar interloper that has been detected and it showed a non-gravitational acceleration (Micheli et al. 2018) that cannot be accounted for by outgassing, given the strict upper limits to outgassing resulting from Spitzer observations, unless the relative abundances of the common volatiles are very different from those in comets (Trilling et al. 2018). As an alternative, Bialy & Loeb (2018) have suggested that its peculiar acceleration is due to radiation… 

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