Possible measurement of Quintessence and density parameter using strong gravitational lensing events

Details Possible measurement of Quintessence and density parameter using strong gravitational lensing events Possible measurement of Quintessence and density parameter using strong gravitational lensing events

2000-11-23

arxiv.org/abs/gr-qc/0011083v2

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

5 pages, 1 figure, accepted for publication in Progress of Theoretical Physics

Scientific paper

10.1143/PTP.105.887

We propose a possible measurement of the time variability of the vacuum energy using strong gravitational lensing events. As an example we take an Einstein cross lens HST 14176+5226 and demonstrate that the measurement of the velocity dispersion with the accuracy of $\pm$ 5 km/sec will have a chance to determine the time dependence of the vacuum energy as well as the density parameter with the accuracy of order 0.1 if one fixes the lens model.

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