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

Toshifumi Futamase, Shijun Yoshida

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

We propose a possible method of 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 an accuracy of ± 5 km/sec may allow for the determination of the time dependence of the vacuum energy as well as the density parameter with an accuracy of order 0.1 if the lens model is fixed.

Original languageEnglish
Pages (from-to)887-891
Number of pages5
JournalProgress of Theoretical Physics
Volume105
Issue number5
DOIs
Publication statusPublished - 2001 May 1

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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