Findings from published research, checked in the open

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1,706 claims from 1,050 papers are on the record. 46 have been checked so far; the other 1,660 have no check with a result yet.

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Status: Unchecked ×Keyword: planetesimal scattering ×Clear all

7 claims from 3 papers

1. Physics and Astronomy › Astro and Planetary Science

   NEPTUNE’S ORBITAL MIGRATION WAS GRAINY, NOT SMOOTH

   Nesvorný and Vokrouhlický · The Astrophysical Journal · 2016

   The paper argues that Neptune's migration was grainy, caused by scattering with massive planetesimals, and that this better explains the Kuiper belt's mix of resonant and non-resonant objects.

   Unchecked2 claims
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   1. UncheckedIn the authors' models, grainy migration of Neptune gives a higher non-resonant to resonant ratio of Kuiper belt bodies, up to ~10 times higher than smooth migration.“Thus, the non-resonant--to--resonant ratio obtained with the grainy migration is higher, up to ~10 times higher for the range of parameters investigated here, than in a model with smooth migration.”
   2. UncheckedIn simulations of Neptune's migration, a grainy (jerky) migration gives a narrower spread of libration amplitudes in the 3:2 resonance than a smooth one.“The grainy migration leads to a narrower distribution of the libration amplitudes in the 3:2 resonance.”

2. Physics and Astronomy › Stellar, planetary, and galactic studies

   Planetesimal Scattering Efficiency of Cold Giant Planet Architectures

   Kane and Miles · arXiv (Cornell University) · 2025

   Unchecked3 claims
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   1. Unchecked“We show that increasing the eccentricity of a Jupiter analog from its present, near-circular, value to a moderate range (0.2-0.3) results in an order of magnitude increase in scattered material to the inner part of the system.”
   2. Unchecked“The inclusion of a Saturn analog to the dynamical model produces a similar increase, highlighting the importance of multiple giant planets beyond the snow line.”
   3. Unchecked“However, the addition of analogs to Uranus and Neptune can have a minor negative effect on scattering efficiency through the transfer of angular momentum from the inner giant planets.”

3. Physics and Astronomy › Astro and Planetary Science

   Mars' Growth Stunted by an Early Giant Planet Instability

   Clement, Kaib, Raymond and Walsh · HAL (Le Centre pour la Communication Scientifique Directe) · 2018

   Unchecked2 claims
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   1. Unchecked“Here we use 800 dynamical simulations to show that an early instability in the outer solar system strongly influences terrestrial planet formation and regularly yields properly sized Mars analogs.”
   2. Unchecked“In these simulations, accretion has begun in the Mars region before the instability, but the dynamical perturbation induced by the giant planets' scattering removes large embryos from Mars' vicinity.”