Cosmological constant and time delay
Abstract
Aims: The effect of the cosmological constant on the time delay caused by an isolated spherical mass is calculated.
Methods: We integrate the geodesic equations without using the lens equation.
Results: We compare our results to a recent observational bound on the time delay of the lensed quasar SDSS J1004+4112.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- June 2008
- DOI:
- 10.1051/0004-6361:200809449
- arXiv:
- arXiv:0801.3776
- Bibcode:
- 2008A&A...484..103S
- Keywords:
-
- cosmology: theory;
- Astrophysics;
- General Relativity and Quantum Cosmology
- E-Print:
- 8 pages, 1 figure