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

Toshifumi Futamase·Shijun Yoshida
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Abstract

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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Toshifumi Futamase, Shijun Yoshida. 2001-03-27. Possible measurement of Quintessence and density parameter using strong gravitational lensing events. https://doi.org/10.1143/ptp.105.887

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