Zobrazeno 1 - 10
of 72
pro vyhledávání: '"Dwivedi I"'
Publikováno v:
Phys.Rev.D84:024001,2011
A distinguishable and observable physical property of Naked Singular Regions of the spacetime formed during a gravitational collapse has important implications for both experimental and theoretical relativity. We examine here whether energy can escap
Externí odkaz:
http://arxiv.org/abs/1004.3035
Publikováno v:
Phys.Rev. D65 (2002) 084009
We analyze here the structure of non-radial nonspacelike geodesics terminating in the past at a naked singularity formed as the end state of inhomogeneous dust collapse. The spectrum of outgoing nonspacelike null geodesics is examined analytically. T
Externí odkaz:
http://arxiv.org/abs/gr-qc/0111053
Autor:
Dwivedi, I. H.
A distinguishable physical property between a naked singularity and a black-hole, formed during a gravitational collapse has important implications for both experimental and theoretical relativity. We examine the energy radiated during the sphericall
Externí odkaz:
http://arxiv.org/abs/gr-qc/0111021
Publikováno v:
Phys.Rev. D63 (2001) 084018
A piecewise Tolman-Bondi-Lemaitre (TBL) cell-model for the universe incorporating local collapsing and expanding inhomogeneities is presented here. The cell-model is made up of TBL underdense and overdense spherical regions surrounded by an intermedi
Externí odkaz:
http://arxiv.org/abs/gr-qc/0010063
Publikováno v:
Phys. Rev. D 59, 044018 (1999)
We examine here the nature of the central singularity forming in the spherically symmetric collapse of a dust cloud and it is shown that this is always a strong curvature singularity where gravitational tidal forces diverge powerfully. An important c
Externí odkaz:
http://arxiv.org/abs/gr-qc/9805055
Autor:
Dwivedi, I. H.
Publikováno v:
Phys.Rev. D58 (1998) 064004
In this paper we analyze the redshift as observed by an external observer receiving photons which terminate in the past at the naked singularity formed in a Tolman-Bondi dust collapse. Within the context of models considered here it is shown that pho
Externí odkaz:
http://arxiv.org/abs/gr-qc/9805029
Autor:
Joshi, P. S., Dwivedi, I. H.
Publikováno v:
Class.Quant.Grav. 16 (1999) 41-59
Generalizing earlier results on the initial data and the final fate of dust collapse, we study here the relevance of the initial state of a spherically symmetric matter cloud towards determining its end state in the course of a continuing gravitation
Externí odkaz:
http://arxiv.org/abs/gr-qc/9804075
Autor:
Dwivedi, I. H.
Publikováno v:
Phys.Rev. D58 (1998) 084029
General relativistic spherically symmetric matter field with a vanishing stress energy scalar is analyzed. Procedure for generating exact solutions of the field equations for such matter distributions is given. It is further pointed out that all such
Externí odkaz:
http://arxiv.org/abs/gr-qc/9710065
Autor:
Dwivedi, I. H., Joshi, P. S.
Publikováno v:
Class.Quant.Grav. 14 (1997) 1223-1236
We examine here the relevance of the initial state of a collapsing dust cloud towards determining it's final fate in the course of a continuing gravitational collapse. It is shown that given any arbitrary matter distribution $M(r)$ for the cloud at t
Externí odkaz:
http://arxiv.org/abs/gr-qc/9612023
Autor:
Dwivedi, I. H., Joshi, P. S.
Publikováno v:
Commun.Math.Phys. 166 (1994) 117-128
Generalizing earlier results of Joshi and Dwivedi (Commun. Math. Phys. 146, 333 (1992); Lett. Math. Phys. 27, 235 (1993)), we analyze here the spherically symmetric gravitational collapse of a matter cloud with a general form of matter for the format
Externí odkaz:
http://arxiv.org/abs/gr-qc/9405049