Astronomy and Astrophysics – Astrophysics
Scientific paper
2001-10-29
Prog.Theor.Phys. 106 (2001) 917-928
Astronomy and Astrophysics
Astrophysics
14 pages, 6 figures. Progress of Theoretical Physics, Vol 106, in press
Scientific paper
10.1143/PTP.106.917
We assess the feasibility of probing dark energy with strong gravitational lensing systems. The capability of the method, which depends on the accuracy with which the lensing systems are modeled, is quantitatively investigated using the Fisher-matrix formalism. We show that this method might place useful constraints on the density parameter and the redshift evolution of the dark energy by combining it with a constraint from supernova measurements. For this purpose, the lens potential needs to be precisely reconstructed. We determine the required quality of data. We also briefly discuss the optimal strategy to constrain the cosmological parameters using gravitational lensing systems.
Futamase Toshifumi
Kadoya Yasufum
Murata Tsukasa
Yamamoto Kazuhiro
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