2001/04/16 by Kazuhiro Yamamoto, Toshifumi Futamase · 1 citation
Physics and Astronomy · #Cosmology and Gravitation Theories #Galaxies: Formation, Evolution, Phenomena #Pulsars and Gravitational Waves Research #astro-ph
paper · pdf · doi:10.1143/ptp.105.707
12 pages including 3 figures, to be published in Prog. Theor. Phys
arxiv created 2001/04/16 · openalex publication_date 2001/05/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
A possible method to reconstruct the cosmic equation of state using strong gravitational lensing systems is proposed. The feasibility of the method is investigated by carrying out the reconstruction on the basis of a simple Monte-Carlo simulation. We show that the method can work and that the cosmic equation of state w(z) can be determined within errors of Ωw ∼ ±0.1 − ±0.2 when a sufficiently large number of lensing systems (N ∼ 20) for z ≲ 1 are precisely measured. Statistics of lensed sources in a wide and deep survey like the SDSS are also briefly discussed.