Could Solar Radiation Pressure Explain ‘Oumuamua’s Peculiar Acceleration?

@article{Bialy2018CouldSR,
  title={Could Solar Radiation Pressure Explain ‘Oumuamua’s Peculiar Acceleration?},
  author={Shmuel Bialy and Abraham Loeb},
  journal={The Astrophysical Journal Letters},
  year={2018},
  volume={868}
}
  • S. BialyA. Loeb
  • Published 26 October 2018
  • Physics, Geology
  • The Astrophysical Journal Letters
‘Oumuamua (1I/2017 U1) is the first object of interstellar origin observed in the solar system. Recently, Micheli et al. reported that ‘Oumuamua showed deviations from a Keplerian orbit at a high statistical significance. The observed trajectory is best explained by an excess radial acceleration Δa ∝ r−2, where r is the distance of ‘Oumuamua from the Sun. Such an acceleration is naturally expected for comets, driven by the evaporating material. However, recent observational and theoretical… 

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