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Lane–Emden equation 레인-엠덴 방정식, レーン=エムデン方程式In astrophysics, the Lane–Emden equation is a dimensionless form of Poisson's equation for the gravitational potential of a Newtonian self-gravitating, spherically symmetric, polytropic fluid. It is named after astrophysicists Jonathan Homer Lane and Robert Emden. The equation reads \frac{1}{\xi...출처 영어 위키백과