Naked Singularities in the Charged Vaidya-deSitter Spacetime
نویسندگان
چکیده
We study the occurrence of naked singularities in the spherically symmetric collapse of a charged null fluid in an expanding deSitter background a piece of charged Vaidya-deSitter spacetime. The necessary conditions for the formation of a naked singularity are found. The results for the uncharged solutions can be recovered from our analysis.
منابع مشابه
M ar 1 99 9 Naked Singularity of the Vaidya - deSitter Spacetime and Cosmic
We investigate the formation of a locally naked singularity in the collapse of radiation shells in an expanding Vaidya-deSitter background. This is achieved by considering the behaviour of non-spacelike and radial geodesics originating at the singularity. A specific condition is determined for the existence of radially outgoing, null geodesics originating at the singularity which, when this con...
متن کاملGeneralized Vaidya Solutions
A large family of solutions, representing, in general, spherically symmetric Type II fluid, is presented, which includes most of the known solutions to the Einstein field equations, such as, the monopolede Sitter-charged Vaidya ones. PACS numbers: 04.20Jb, 04.40.+c. ∗e-mail address: [email protected] 1 In 1951, Vaidya [1] found a solution that represents an imploding (exploding) null dust f...
متن کامل60 v 1 2 2 M ay 1 99 7 Naked Singularities and the Weyl Curvature Hypothesis
We examine the growth of the Weyl curvature in two examples of naked singularity formation in spherical gravitational collapse dust and the Vaidya spacetime. We find that the Weyl scalar diverges along outgoing radial null geodesics as they meet the naked singularity in the past. The implications of this result for the Weyl curvature hypothesis are discussed. We mention the possibility that alt...
متن کاملv 1 2 4 M ay 2 00 1 On naked singularities in higher dimensional Vaidya space - times
We investigate the end state of gravitational collapse of null fluid in higher dimensional space-times. Both naked singularities and black holes are shown to be developing as final outcome of the collapse. The naked singularity spectrum in collapsing Vaidya region (4D) gets covered continuously with introduction of extra dimensions. PACS number(s): 04.20.Dw, 04.20.Cv, 04.70.Bw
متن کاملType II Fluid Solutions to Einstein’s Field Equations in N-Dimensional Spherical Spacetimes
A large class of Type II fluid solutions to Einstein field equations in Ndimensional spherical spacetimes is found, wich includes most of the known solutions. A family of the generalized collapsing Vaidya solutions with homothetic self-similarity, parametrized by a constant λ, is studied, and found that when λ > λc(N), the collapse always forms black holes, and when λ < λc(N), it always forms n...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2000