Zobrazeno 1 - 10
of 497
pro vyhledávání: '"Ghosh, S. G."'
Publikováno v:
Physical Review D 66, 084006 (2002)
We investigate the occurrence and nature of naked singularities in the gravitational collapse of a self-similar adiabatic perfect fluid in a five dimensional space-time. The naked singularities are found to be gravitationally strong in the sense of T
Externí odkaz:
http://arxiv.org/abs/1409.8010
Autor:
Dawood, A. K., Ghosh, S. G.
Publikováno v:
Phys.Rev.D70:104010,2004
We prove a theorem that characterizes a large family of non-static solutions to Einstein equations, representing, in general, spherically symmetric Type II fluid. It is shown that the best known dynamical black hole solutions to Einstein equations ar
Externí odkaz:
http://arxiv.org/abs/1007.2500
Autor:
Ghosh, S. G., Dawood, A. K.
Publikováno v:
Gen.Rel.Grav.40:9-21,2008
We prove a theorem that characterizes a large family of non-static solutions to Einstein equations in $N$-dimensional space-time, representing, in general, spherically symmetric Type II fluid. It is shown that the best known Vaidya-based (radiating)
Externí odkaz:
http://arxiv.org/abs/0801.4342
Autor:
Ghosh, S. G., Deshkar, D. W.
Publikováno v:
Phys.Rev.D77:047504,2008
A Vaidya-based model of a radiating black-hole is studied in a 5-dimensional Einstein gravity with Gauss-Bonnet contribution of quadratic curvature terms. The structure and locations of the apparent and event horizons of the radiating black hole are
Externí odkaz:
http://arxiv.org/abs/0801.2710
Autor:
Ghosh, S. G.
Publikováno v:
Int.J.Mod.Phys.A23:4245-4254,2008
We obtain the analogue of collapsing Vaidya-like solution to include both a null fluid and a string fluid, with a linear equation of state ($p_{\bot} = k \rho$), in non-spherical (plane symmetric and cylindrically symmetric) anti-de Sitter space-time
Externí odkaz:
http://arxiv.org/abs/gr-qc/0608132
Autor:
Ghosh, S. G., Deshkar, D. W.
We obtain Vaidya-like solutions to include both a null fluid and a string fluid in non-spherical (plane symmetric and cylindrical symmetric) anti-de Sitter space-times. Assuming that string fluid diffuse, we find exact solutions of Einstein's field e
Externí odkaz:
http://arxiv.org/abs/gr-qc/0608035
Autor:
Ghosh, S. G., Deshkar, D. W.
Publikováno v:
Astrophys.Space Sci.310:111-117,2007
The general solution of the Einstein equation for higher dimensional (HD) spherically symmetric collapse of inhomogeneous dust in presence of a cosmological term, i.e., exact interior solutions of the Einstein field equations is presented for the HD
Externí odkaz:
http://arxiv.org/abs/gr-qc/0607142
Publikováno v:
Int.J.Mod.Phys. A20 (2005) 1495-1502
We study the spherically symmetric collapse of a fluid with non-vanishing radial pressure in higher dimensional space-time. We obtain the general exact solution in the closed form for the equation of state ($P_r = \gamma \rho$) which leads to the exp
Externí odkaz:
http://arxiv.org/abs/gr-qc/0305088
Autor:
Ghosh, S. G., Deshkar, D. W.
Publikováno v:
Int.J.Mod.Phys. D12 (2003) 913-924
We investigate the occurrence and nature of naked singularities in the gravitational collapse of an adiabatic perfect fluid in self-similar higher dimensional space-times. It is shown that strong curvature naked singularities could occur if the weak
Externí odkaz:
http://arxiv.org/abs/gr-qc/0304075
Autor:
Ghosh, S. G., Banerjee, A.
Publikováno v:
Int.J.Mod.Phys. D12 (2003) 639-648
We investigate the occurrence and nature of a naked singularity in the gravitational collapse of an inhomogeneous dust cloud described by a self-similar higher dimensional Tolman-Bondi space-time. Bound, marginally bound and unbound space-times are a
Externí odkaz:
http://arxiv.org/abs/gr-qc/0212067