The Sagittarius dwarf galaxy as a microlensing target
The Sagittarius dwarf galaxy as a microlensing target
We estimate the optical depth, time-scale distribution and fraction of microlensing events originating from sources in the Sagittarius dwarf galaxy (Sgr) lensed by deflectors in the Milky Way. These events have a time-scale longer by a factor ~1.3 than the MW/MW events and occur mainly on sources fainter than mag …