Cosmic String
a tubelike configuration of energy that is believed to have existed in the early universe.
Cosmic Strings
(a) Thin, massive, thread-like objects that are predicted to exist by some, but not all, grand unified theories; they have a thickness of about 10-29 cm and a mass of about 1022 g cm-1, ...
Cosmic strings are one-dimensional (line-like) defects, slightly similar to the vortex tubes that can be produced in liquid helium phase transitions.
cosmic string Cosmic strings are thin strands of ultrahigh density matter that are predicted by some theories to have been left over from an extremely early era of the universe.
Cosmic string
A cosmic string is a hypothetical 1-dimensional topological defect in various fields.
The research also constrains models of so-called cosmic strings, objects that are proposed to have been left over from the beginning of the Universe and subsequently stretched to enormous lengths by the Universe's expansion.
A texture is a topological defect like a cosmic string, and the model that cosmic structures were created by topological defects was ruled out by COBE.
If there is truth to speculation about certain kinds of phase transitions or kink bursts from long cosmic strings in the very early universe (at cosmic times around 10^{-25} seconds) these could also be detectable.
"However, at the time of the formation of the universe in the big-bang, wormholes could have been stabilized by loops of negative mass cosmic string. If so, they would still be here, and it is worthwhile to look for them.
A black hole is an incredibly dense remnant of a star that has collapsed into a singularity under its own gravity upon running out of hydrogen fuel. Black holes have extremely strong gravitational fields, similar to cosmic string fragments, ...
A type held open by negative mass cosmic strings was put forth by Visser in collaboration with Cramer et al., in which it was proposed that such wormholes could have been naturally created in the early universe.
1986 (Nature 321, 142) and other papers in the same issue as a case of lensing by a cosmic string, only to be retracted (basically by the editor) when further data showed spectroscopic differences between the components.
* Wald, Robert M.: General Relativity, ch. 9, University of Chicago Press (1984)
See also
* 0-dimensional singularity:
* 1-dimensional singularity: cosmic string
* 2-dimensional singularity: domain wall ...
 See also: Universe, Gravitation, Second, Field, Rings
  
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