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Universe 2017, 3(3), 53; doi:10.3390/universe3030053

Microlensing and Its Degeneracy Breakers: Parallax, Finite Source, High-Resolution Imaging, and Astrometry

Subaru Telescope, National Astronomical Observatory of Japan, 650 N Aohoku Place, Hilo, HI 96720, USA
Academic Editors: Valerio Bozza, Francesco De Paolis and Achille A. Nucita
Received: 28 April 2017 / Revised: 20 June 2017 / Accepted: 4 July 2017 / Published: 7 July 2017
(This article belongs to the Special Issue Gravitational Lensing and Astrometry)
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Abstract

First proposed by Paczynski in 1986, microlensing has been instrumental in the search for compact dark matter as well as discovery and characterization of exoplanets. In this article, we provide a brief history of microlensing, especially on the discoveries of compact objects and exoplanets. We then review the basics of microlensing and how astrometry can help break the degeneracy, providing a more robust determination of the nature of the microlensing events. We also outline prospects that will be made by on-going and forth-coming experiments/observatories. View Full-Text
Keywords: gravitational lensing: micro; exoplanets; dark matter gravitational lensing: micro; exoplanets; dark matter
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Lee, C.-H. Microlensing and Its Degeneracy Breakers: Parallax, Finite Source, High-Resolution Imaging, and Astrometry. Universe 2017, 3, 53.

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