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arXiv · astro-ph/0410183

Velocity Effects on the Deflection of Light by Gravitational Microlenses

David Heyrovsky
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Abstract

We study the influence of general lens and source velocities on the gravitational deflection of light by single and two-point-mass microlenses with general axis orientation. We demonstrate that in all cases the lens equation preserves its form exactly. However, its parameters -- the Einstein radius and the binary-lens separation -- are influenced by the lens velocity. In Galactic microlensing settings the velocity mainly affects the inferred separation for wide binary-star or star+planet microlenses oriented close to the line of sight. We briefly discuss the case of lenses moving with highly relativistic velocities.

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David Heyrovsky. 2004-10-07. Velocity Effects on the Deflection of Light by Gravitational Microlenses. https://doi.org/10.1086/428937

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