Potential-density pairs for bent bars
Monthly Notices of the Royal Astronomical Society(2011)
摘要
A method is presented to bend a thin massive line when the curvature is small. The procedure is applied to a homogeneous thin bar with two types of curvatures. One of them mimics a galactic bar with two spiral arms at its tips. It is showed that if the bending function is a linear combination of Legendre polynomials, then the bent potential is an exact solution of the Laplace equation. A transform...
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关键词
galaxies: kinematics and dynamics
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