Formation of Three-Dimensional Black Strings from Gravitational Collapse of Dust Cloud
General Relativity and Quantum Cosmology
2010-10-27 v4 Astrophysics
High Energy Physics - Theory
Abstract
We study the formation of black strings from a gravitational collapse of cylindrical dust clouds in the three-dimensional low-energy string theory. New junction conditions for the dilaton as well as two junction conditions for metrics and extrinsic curvatures between both regions of the clouds are presented. As a result, it is found that the collapsing dust cloud always collapses to a black string within a finite collapse time, and then a curvature singularity formed at origin is cloaked by an event horizon. Moreover, it is also shown that the collapse process can form a naked singularity within finite time, regardless of the choice of initial data.
Keywords
Cite
@article{arxiv.gr-qc/0612094,
title = {Formation of Three-Dimensional Black Strings from Gravitational Collapse of Dust Cloud},
author = {Seungjoon Hyun and Jaehoon Jeong and Wontae Kim and John J. Oh},
journal= {arXiv preprint arXiv:gr-qc/0612094},
year = {2010}
}
Comments
LaTeX, 13 pages, 6 figures, matches published version