SOME BIANCHI TYPE-II COSMOLOGICAL MODELS IN LYRA GEOMETRY

2010 ◽  
Vol 25 (12) ◽  
pp. 2525-2533 ◽  
Author(s):  
J. K. SINGH ◽  
N. K. SHARMA
Keyword(s):  
Magnetic Field ◽  
Bianchi Type ◽  
Lyra Geometry ◽  
Cosmological Models ◽  
Type Ii ◽  
Anisotropic Cosmological Models ◽  
Normal Gauge ◽  
Lyra’S Geometry ◽  
Presence And Absence ◽  
The Magnetic Field

In this work, we have studied the Bianchi type-II anisotropic cosmological models in the theory based on Lyra's geometry in normal gauge in the presence and absence of the magnetic field. The physical and kinematical behaviors of the models have also been discussed.

SOME BIANCHI TYPE-V COSMOLOGICAL MODELS IN BRANS–DICKE THEORY

2010 ◽  
Vol 25 (18n19) ◽  
pp. 3817-3824 ◽  
Author(s):  
J. K. SINGH
Keyword(s):  
Magnetic Field ◽  
Bianchi Type ◽  
Cosmological Models ◽  
Energy Conditions ◽  
Type V ◽  
The Magnetic Field ◽  
Bianchi Type V

The Bianchi type-V cosmological models have been investigated in the context of Brans–Dicke theory in the presence as well as absence of the magnetic field. The physical and kinematical behaviors of the models have been discussed. The energy conditions of the models have also been examined.

scholarly journals BIANCHI TYPE I ANISOTROPIC MAGNETIZED COSMOLOGICAL MODELS WITH VARYING Λ

2003 ◽  
Vol 12 (07) ◽  
pp. 1299-1314 ◽  
Author(s):  
ANIRUDH PRADHAN ◽  
OM PRAKASH PANDEY
Keyword(s):  
Magnetic Field ◽  
Viscous Fluid ◽  
Bianchi Type ◽  
Mass Density ◽  
Cosmological Models ◽  
Type I ◽  
Bianchi Type I ◽  
Bulk Viscous Fluid ◽  
Varying Λ ◽  
The Magnetic Field

Bianchi type I magnetized cosmological models in the presence of a bulk viscous fluid are investigated. The source of the magnetic field is due to an electric current produced along the x-axis. The distribution consists of an electrically neutral viscous fluid with an infinite electrical conductivity. The coefficient of bulk viscosity is assumed to be a power function of mass density. The cosmological constant Λ is found to be positive and is a decreasing function of time which is supported by results from recent supernovae observations. The behaviour of the models in the presence and the absence of magnetic field are also discussed.

SOME COSMOLOGICAL MODELS IN SCALAR–TENSOR THEORIES

2010 ◽  
Vol 25 (27) ◽  
pp. 2363-2371 ◽  
Author(s):  
J. K. SINGH
Keyword(s):  
Magnetic Field ◽  
Bianchi Type ◽  
Cosmological Models ◽  
Energy Conditions ◽  
Einstein Field Equations ◽  
Field Equations ◽  
Static Solutions ◽  
Type V ◽  
The Magnetic Field ◽  
Bianchi Type V

A class of non-static solutions to the Einstein field equations has been investigated in the context of Bianchi type-V spacetime in a family of scalar–tensor theories in the presence as well as absence of the magnetic field. The physical and kinematical behaviors of the models have been discussed. The energy conditions of the models have also been verified.

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