Astrometric Microlensing Events Predicted from Gaia DR2

From the Gaia DR2 catalogue we predict astrometric microlensing events by foreground stars with high proper motion (µ_tot >150mas/yr) passing a background source in the next decades. Using Gaia DR2 photometry we determine an approximate mass of the lens, which we use to calculate the expected microlensing effects. This yields 3914 microlensing events by 2875 different lenses between 2010 and 2065 with expected shifts larger than 0.1 mas between the lensed and unlensed positions of the source. 513 of those are expected to happen between 2014.5 - 2026.5 and might be measured by Gaia. For 127 events we also expect a magnification between 1 mmag and 3 mag.

Additional Info

Field Value
Creator Klüter, J.;Demleitner, M.;Proft, S.
B2FINDVersion 2.4.0
Discipline Not stated
PublicationYear 2018
Publisher The GAVO DC team
Rights Licensed under CC-0