Probing the cosmic distance duality relation using time delay lenses
  The construction of the cosmic distance-duality relation (CDDR) has been
widely studied. However, its consistency with various new observables remains a
topic of interest. We present a new way to constrain the CDDR $\eta(z)$ using
different dynamic and geometric properties of strong gravitational lenses (SGL)
along with SNe Ia observations. We use a sample of $102$ SGL with the
measurement of corresponding velocity dispersion $\sigma_0$ and Einstein radius
$\theta_E$. In addition, we also use a dataset of $12$ two image lensing
systems containing the measure of time delay $\Delta t$ between source images.
Jointly these two datasets give us the angular diameter distance $D_{A_{ol}}$
of the lens. Further, for luminosity distance, we use the $740$ observations
from JLA compilation of SNe Ia. To study the combined behavior of these
datasets we use a model independent method, Gaussian Process (GP). We also
check the efficiency of GP by applying it on simulated datasets, which are
generated in a phenomenological way by using realistic cosmological error bars.
Finally, we conclude that the combined bounds from the SGL and SNe Ia
observation do not favor any deviation of CDDR and are in concordance with the
standard value ($\eta=1$) within $2\sigma$ confidence region, which further
strengthens the theoretical acceptance of CDDR.
