ON THE MASS OF THE DARK COMPACT HALO OBJECTS

Recently the French EROS Collaboration and the American-Australian MAC HO Collaboration have reported the observation of altogether three pos sible microlensing events by monitoring over several years the brightn ess of millions of stars in the Large Magellanic Cloud. For each of th ese events, assuming they are due to microlensing, we compute the most likely mass for the dark compact halo object, which acted as gravitat ional lens. The most likely masses are 0.12, 0.31 and 0.38 M.. The ave rage mass calculated using the method of moments turns out to be 0.14 M..