Abstract
Gravitational Microlensing is one of the most powerful methods of detecting very low mass objects like Exoplanets and Brown dwarfs. The most important parameter that we can extract from a microlensing event is the Einstein radius crossing time tE. In this work, by performing Monte-Carlo simulation, we obtain tE distribution for brown dwarf population. Then we show that this population can be a good candidate for very short microlensing events with tE<2 days. The data set used in this analysis was taken in 2006 and 2007 seasons by the MOA-II survey, using the 1.8-m MOA-II telescope located at the Mt. John University Observatory, New Zealand.
