Journal
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
Volume -, Issue 7, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1475-7516/2017/07/010
Keywords
gravitational lensing; supernova type Ia - standard candles; dark energy experiments; dark energy theory
Funding
- CSIR-SRF scheme (Govt. of India) [09/045(1345/2014-EMR-I)]
- INCT-A
- CNPq [478524/2013-7, 303734/2014-0]
Ask authors/readers for more resources
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 s0 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-Aol 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.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available