Invited_talk abstract details

Since gravitational light deflection probes the total mass distribution in the Universe without reference to the nature or state of the matter, it provides a unique probe for cosmological applications. This talk will summarize some of the most powerful applications of weak gravitational lensing in cosmology, both its achievements and promises for the future. In particular, weak lensing is used to measure the power spectrum of the large-scale structure, which depends on the geometry of the universe and its energy contents, and is seen as the most promising method for probing the equation-of-state of dark energy. Further applications include: determining the mass properties of galaxies, and direct determination of the galaxy biasing factor.