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Exoplanet Occurrence Rates from Microlensing Surveys
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The number of exoplanets detected using gravitational microlensing technique is currently larger than 200, which enables population studies. Microlensing is uniquely sensitive to low-mass planets orbiting at separations of several astronomical units, a parameter space that is not accessible to other planet-detection techniques, as well as free-floating planets, not orbiting around any star. In this review, we present the state-of-the-art knowledge on the demographics of exoplanets detected with microlensing, with a particular emphasis on their occurrence rates. We also summarize the current knowledge about free-floating planets, an elusive population of objects that seem to be more common than ordinary, gravitationally bound exoplanets.
Forward citations
Cited by 5 Pith papers
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A GPU-optimized contour-integration microlensing code with refactored lens-equation coefficients and a new ghost-image detector achieves roughly 100x speedup over a single-threaded CPU reference.
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Free Floating or Merely Detached?
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The SPHERE infrared survey for exoplanets (SHINE). V. Complete observations, data reduction and analysis, detection performances, and final results
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Detecting Exomoons in Free-Floating-Planet Events from Space-based Microlensing Surveys
CSST and Roman should detect Earth-mass to Moon-mass satellites around free-floating planets in microlensing surveys, with Roman more sensitive than CSST.
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