Self-Microlensing in Compact Binary Systems
  The signature of the self-microlensing in compact binaries (white dwarfs, neutron stars and black holes) is a flare with the characteristic time of typically a few minutes. The probability of detecting these microlensing events can be as high as $1/50$ for a flux sensitivity of $\Delta m=0.01$ in magnitude. The discovery of the self-microlensing by binaries would furnish an additional way to find the masses of the lens and the companion and will be promising for the searches of black holes. 
Bo Qin, Xiang-Ping Wu and Zhenlong Zou