INFLUENCE OF THE GALACTIC GRAVITATIONAL-FIELD ON THE MICROLENSING OF NONCOMPACT BODIES

The microlensing of background stars by stars made of neutralino that have been recently studied by Gurevich and Zybin (1995) is considered. These stars are suggested as a major contributor to the hidden mass. A fairly rough model of microlensing with allowance for the gravitatio nal field of the Galaxy is analyzed. It is shown that the influence of this field on the microlensing by a gravitational lens made of neutra lino with a mass of the order of the solar mass can give rise to a sha rp increase of the intensity in the light curve, although the appearan ce of this effect is unlikely.