AN UPGRADE OF THE MICROLENSING RATE

We study different models of dark-matter distribution for the halo of our galaxy. Assuming that the dark matter is in form of MACHOs, we com pute the expected number of microlensing events and their average time duration for an experiment monitoring stars in the LMC. The main effe ct of considering models with anisotropy in the velocity space is to r educe the microlensing rate by about 30% and to increase, but only sli ghtly, the mean event duration, as compared to the standard spherical halo model. Consideration of different luminous models for the visible part of the galaxy also induce variations in the microlensing results by roughly the same amount as mentioned above.