Magnification Cross Sections for the Elliptic Umbilic Caustic Surface
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🌌 astro-ph.CO
math-phmath.MP
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magnificationcausticcrossellipticregionsurfaceumbilicasymptotic
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We show that the asymptotic scaling of the magnification volume cross section corresponding to an elliptic umbilic caustic surface is $\mu^{-2.5}$ in the two-image region and $\mu^{-2}$ in the four-image region, where $\mu$ is the total unsigned magnification.
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