Premana W Premadi , Hugo Martel , Richard Matzner , Toshifumi Futamase, PASA, 18 (2), in press.
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Title/Abstract Page: Cosmological Parameter Survey Using
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Introduction
The evolution of a homogeneous, isotropic, expanding universe comprised of nonrelativistic matter can be described in terms of three parameters: the Hubble constant H0, the density parameter 
, and the cosmological constant 
. The large-scale structure of the universe, galaxies, clusters, and voids, represents the deviations from this overall homogeneity and isotropy. These structures originate from primordial fluctuations that grow with time as a result of gravitational instability. Determining the value of the cosmological parameters, and the correct model of large-scale structure formation, is the most important challenge of observational and physical cosmology.
In recent years, gravitational lenses have been used to estimate or put limits on the values of the cosmological parameters (amongst others : Fukugita, Futamase, and Kasai (1990), Turner (1990), Martínez-González, Sanz, and Cayón (1997), Wambsganss, Cen, and Ostriker (1997), Kundic et al (1997), Falco, Kochanek, and Muñoz (1998), Chiba and Yoshii (1999), Barber et al 2000). If the cosmological model has several free parameters, a full survey of the cosmological parameter space is required in order to determine or limit the values of all cosmological parameters simultaneously. We present a study of light propagation in inhomogeneous universes surveying the full 4-parameter phase-space formed by , , H0, and n, the slope of the primordial power spectrum.
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Title/Abstract Page: Cosmological Parameter Survey Using
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