Gravitational lensing study of cold dark matter led galactic halo
  In this work the space-time geometry of the halo region in spiral galaxies is
obtained considering the observed flat galactic rotation curve feature,
invoking the Tully-Fisher relation and assuming the presence of cold dark
matter in the galaxy. The gravitational lensing analysis is performed treating
the so obtained space-time as a gravitational lens. It is found that the
aforementioned space-time as the gravitational lens can consistently explain
the galaxy-galaxy weak gravitational lensing observations and the lensing
observations of the well-known Abell 370 galaxy cluster.
