Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2006-11-05
FizikaB15:163-182,2006
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
22 pages, 3 figures, Some typos corrected
Scientific paper
Bianchi type V bulk viscous fluid cosmological models are investigated with dynamic cosmological term $\Lambda(t)$. Using a generation technique (Camci {\it et al.}, 2001), it is shown that the Einstein's field equations are solvable for any arbitrary cosmic scale function. Solutions for particular forms of cosmic scale functions are also obtained. The cosmological constant is found to be decreasing function of time, which is supported by results from recent type Ia supernovae observations. Some physical and geometrical aspects of the models are also discussed.
Jotania Kanti
Pradhan Anirudh
Rai Anju
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