Cross-Matching of OGLE III and GAIA catalogues: Investigation of
  Dark-lens microlensing candidates
  In this work, we use $13$ microlensing candidates with dark lenses from OGLE
III catalogue \cite{2016MNRAS.458.3012W} and cross-match them with the GAIA
catalogue. We identify the microlensing source stars in the GAIA catalogue by
comparing the coordinate and the magnitude of stars and using the proper motion
and the parallax parameters of the source stars. Combining with the
microlensing light curves as well as the microlensing parallax effect, we
determine the mass and the distance of lenses from Earth. We conclude that the
lens for this set of microlensing events for the massive lenses are blackholes
and for the small lenses are neutron/white dwarf candidates.
