Stability of the regular n-gon rotating equilibria with logarithm interaction
arxiv(2024)
摘要
We study the linear stability of regular n-gon rotating equilibria in the
n-body problem with logarithm interaction. In the presence of a central mass
M, linear stability is insured if M is bounded below and above by constants
depending on the number and mass of the (equal) outer n bodies. Moreover, we
provide explicit equations of these bounds. In the absence of a central mass we
find that the regular n-gon is linearly stable for n =2,3,… 6 only.
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