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Title:
Precision astrometry with intensity interferometry
Speaker:
Abstract:
I will present a proposal for a modification to optical intensity interferometers that allows for microarcsecond astrometry at angular separations as large as several arcseconds. The modification introduces an additional, adjustable path length into the optics, which creates a primary interference fringe for widely separated sources. Combined with other recent technological advances in spectroscopy and fast single-photon detection, this design could allow for unprecedented precision in angular resolution of stars. Promising applications include astrometric microlensing of stars, binary-orbit characterization, exoplanet detection, and Galactic acceleration measurements.
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