出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：abstract We analyse the most recent results of the microlensing observational campaigns carried
out towards the Galactic centre by the MACHO, EROS and OGLE collaborations. We compare
the expected and the observed optical depth and find a very good agreement for current models of
the Galactic components, in particular as for the total mass, triaxial shape and inclination angle
of the Galactic bulge. As expected, we find that only the Galactic luminous components, and
in particular the bulge, contribute significantly to the lens populations. Further informations, in
particular the possibility to distinguish among different bulge models, might be gained by better
exploring regions closer to the Galactic centre.
