Premana W Premadi , Hugo Martel , Richard Matzner , Toshifumi Futamase, PASA, 18 (2), in press.
Next Section: Introduction
Cosmological Parameter Survey Using the Gravitational Lensing Method
Premana W Premadi 1
Hugo Martel 2
Richard Matzner 3
Toshifumi Futamase 4
premadi@as.itb.ac.id
2 Department of Astronomy, University of Texas, Austin, USA
hugo@simplicio.as.utexas.edu
3 Center for Relativity, Department of Physics, University of Texas, Austin, USA
richard@ricci.ph.utexas.edu
4 Astronomical Institute, Tohoku University, Sendai, Japan
tof@astr.tohoku.ac.jp
Abstract:
Using a multiple-lens plane algorithm, we study light propagation in inhomogeneous universes for 43 different COBE-normalized Cold Dark Matter models, with various values of the density parameter 
, cosmological constantá 
, Hubble constant H0, and rms density fluctuation 
. We performed a total of 3,798 experiments, each experiment consisting of propagating a square beam of angular size
, cosmological constantá , Hubble constant H0, and rms density fluctuation . We performed a total of 3,798 experiments, each experiment consisting of propagating a square beam of angular size
composed of 116,281 light rays from the observer up to redshift z=3. These experiments provide statistics of the magnification, shear, and multiple imaging of distant sources. The results of these experiments might be compared with observations, and eventually help constrain the possible values of the cosmological parameters. Additionally, they provide insight into the gravitational lensing process and its complex relationship with the various cosmological parameters.
Keywords: cosmology: large-scale structure - gravitational lensing
- Introduction
- The Ray-Tracing Experiments
- The Elements of Gravitational Lensing
- Results
- Summary
- References
- PostScript (gzipped, 142.8 kilobytes)
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á© Copyright Astronomical Society of Australia 1997 ASKAP
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