Zobrazeno 1 - 10
of 426
pro vyhledávání: '"Srivastava, Sudhir P."'
Autor:
Jaiswal, Annu, Kumar, Rajesh, Srivastava, Sudhir Kumar, Govender, Megandhren, Pacif, Shibesh Kumar Jas
In this work, we have investigated a novel aspect of black hole (BH) formation during the collapse of a self-gravitating configuration. The exact solution of the Einstein field equations is obtained in a model-independent way by considering a paramet
Externí odkaz:
http://arxiv.org/abs/2310.17647
Autor:
Bhardwaj, Vinod Kumar, Yadav, Anil Kumar, Gupta, Lalit Kumar, Prasad, Rajendra, Srivastava, Sudhir Kumar
In the current study, we investigate a scalar field cosmological model with Lyra's geometry to explain the present cosmic expansion in a homogeneous and isotropic flat FRW universe. In Einstein's field equations, we presupposed a variable displacemen
Externí odkaz:
http://arxiv.org/abs/2309.10282
Publikováno v:
Eur. Phys. J. C (2023) 83:490
In this study, we continue our previous work (Annu et al., 2023) by introducing a novel parametrization of the expansion scalar $\Theta $ as a rational function of cosmic time $t$. The paper provides a comprehensive analysis of a homogeneous gravitat
Externí odkaz:
http://arxiv.org/abs/2304.00894
This paper considers the spherically symmetric gravitational collapse in the background of Chaplygin gas as dark energy component. The dark energy is assumed to be generalized and modified Chaplygin gas. The exterior of the star is considered to be S
Externí odkaz:
http://arxiv.org/abs/2303.06395
A new class of self-gravitating collapsing star models with perfect fluid distributions is discussed in this work. The paper has a comprehensive analysis of a homogeneous gravitational collapsing system wherein using a parametrization scheme for the
Externí odkaz:
http://arxiv.org/abs/2303.06343
The present paper deals with the gravitational collapse of an inhomogeneous spherical star consisting of dust fluid in the background of dark energy components with linear equation of state. We discussed the development of apparent horizon to investi
Externí odkaz:
http://arxiv.org/abs/2106.15138
Publikováno v:
Gravitation and Cosmology, 27, 331 - 337, (2021)
In this paper, we have studied the gravitational baryogenesis of isotropic and homogeneous universe in the frame-work of general relativity. We investigate an exact and new solution of Einstein's field equations for FRW metric. Our solution represent
Externí odkaz:
http://arxiv.org/abs/2006.06534
The present work deals with the dynamics of radiating star which is considered to be expansion free cylindrical symmetric dust dissipative fluids. Several treatments are adopted for the description of geometrical and physical features of such stars.
Externí odkaz:
http://arxiv.org/abs/2005.05577
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