Single-epoch and Differential Astrometric Microlensing of Quasars
We propose and discuss a new experimental approach to measure the centroid shift induced by gravitational microlensing in the images of lensed quasars (astrometric microlensing). Our strategy is based on taking the photocenter of a region in the quasar large enough as to be insensitive to microlensing as reference to measure the centroid
Forés-Toribio, R. et al.
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2024