Explaining Neptune’s Eccentricity. (arXiv:2104.07672v3 [astro-ph.EP] UPDATED)
<a href="http://arxiv.org/find/astro-ph/1/au:+Siraj_A/0/1/0/all/0/1">Amir Siraj</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Loeb_A/0/1/0/all/0/1">Abraham Loeb</a>
Early migration damped Neptune’s eccentricity. Here, we assume that the
damped value was much smaller than the value observed today, and show that the
closest flyby of $sim 0.1 ; mathrm{M_{odot}}$ star over $sim 4.5
mathrm{; Gyr}$ in the field, at a distance of $sim 10^3 mathrm{; AU}$
would explain the value of Neptune’s eccentricity observed today.
Early migration damped Neptune’s eccentricity. Here, we assume that the
damped value was much smaller than the value observed today, and show that the
closest flyby of $sim 0.1 ; mathrm{M_{odot}}$ star over $sim 4.5
mathrm{; Gyr}$ in the field, at a distance of $sim 10^3 mathrm{; AU}$
would explain the value of Neptune’s eccentricity observed today.
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