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A public code for astrometric microlensing with contour integration
Monthly Notices of the Royal Astronomical Society, 2021 We present the first public code for the calculation of the astrometric centroid shift occurring during microlensing events. The computation is based on the contour integration scheme and covers single and binary lensing of finite sources with arbitrary ...
Etienne Bachelet, Valerio Bozza
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The astrometric signal of microlensing events caused by free floating planets
Astrophysics and Space Science, 2018 Astrometric observations of microlensing events can be used to obtain important information about lenses. During these events, the shift of the position of the multiple image centroid with respect to the source star location can be measured. This effect,
Lindita Hamolli +2 more
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Astrometric microlensing with theGAIAsatellite
Monthly Notices of the Royal Astronomical Society, 2002 The capabilities of the GAIA satellite for the detection of microlensing events are analyzed. The all-sky averaged photometric optical depth is ~7×10-8 and there are ~4000 photometric microlensing events during the five year mission lifetime. The all-sky
N W Evans
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Background-field effects in astrometric microlensing
Astronomy Letters, 2001We consider the motion of the image of a distant radiation source microlensed by one and many point masses in the presence of an external background field, which produces a shear in the lens equation. The trajectories of the image brightness centroid (BC) in a Chang-Refsdal lens are very sensitive to the magnitude of the shear and to the direction of ...
V. I. Zhdanov +2 more
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Astrometric Microlensing by Primordial Black Holes with the Roman Space Telescope [PDF]
Astrophysical JournalPrimordial Black Holes (PBHs) could explain some fraction of dark matter and shed light on many areas of early-universe physics. Despite over half a century of research interest, a PBH population has so far eluded detection.
Abrams, Natasha S. +7 more
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Astrometric Observation of MACHO Gravitational Microlensing
Astrophysical Journal, 1998D van Buren
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A predicted astrometric microlensing event by a nearby white dwarf
Monthly Notices of the Royal Astronomical Society: Letters, 2018Vasily Belokurov +2 more
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Detecting Galactic MACHOs with VERA through Astrometric Microlensing of Distant Radio Sources
Publication of the Astronomical Society of Japan, 2001Mareki Honma
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