Journal
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
Volume -, Issue 2, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1475-7516/2016/02/054
Keywords
supernova type Ia - standard candles; gravitational lensing; supernovas; cosmological parameters from CMBR
Funding
- INCT-A
- CNPq [478524/2013-7, 310790/2014-0, 400471/2014-0]
- FAPERJ
- INEspaco
- Sao Paulo Research Foundation (FAPESP)/CAPES agreement [2014/21098-1]
Ask authors/readers for more resources
We propose and perform a new test of the cosmic distance-duality relation (CDDR), D-L(z)/D-A(z)(1 vertical bar z)(2) = 1, where D-A is the angular diameter distance and D-L is the luminosity distance to a given source at redshift z, using strong gravitational lensing (SGL) and type Ia Supernovae (SNe Ia) data. We show that the ratio D = D-A12/D-A2 and D* = D-L12/D-L2, where the subscripts 1 and 2 correspond, respectively, to redshifts z(1) and z(2), are linked by D/D* = (1+z(1))(2) if the CDDR is valid. We allow departures from the CDDR by defining two functions for eta(z(1)), which equals unity when the CDDR is valid. We find that combination of SGL and SNe Ia data favours no violation of the CDDR at l sigma confidence level (eta(z) similar or equal to 1), in complete agreement with other tests and reinforcing the theoretical pillars of the 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