Structure of wiggly-cosmic-string wakes

Research output: Contribution to journalArticle

43 Citations (Scopus)

Abstract

We investigate the structure of wiggly-cosmic-string wakes by solving the fluid equations of motion under some simplifying assumptions. The flow of collisionless matter is treated first. Then the flow of a non-self-gravitating, nonrelativistic, ideal fluid is studied and the density structure of the wake is found. For typical values of the string tension, strong shocks are formed in the wakes after the epoch of recombination. It is shown that the post-shock fluid flow in these wakes will be vortical and the vorticity will lead to the generation of a magnetic field. A potential problem in the cosmic-string scenario for structure formation and its possible resolutions are discussed.

Original languageEnglish (US)
Pages (from-to)3487-3496
Number of pages10
JournalPhysical Review D
Volume45
Issue number10
DOIs
StatePublished - 1992
Externally publishedYes

Fingerprint

wakes
strings
shock
ideal fluids
vorticity
fluid flow
equations of motion
time measurement
fluids
magnetic fields

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Structure of wiggly-cosmic-string wakes. / Vachaspati, Tanmay.

In: Physical Review D, Vol. 45, No. 10, 1992, p. 3487-3496.

Research output: Contribution to journalArticle

Vachaspati, Tanmay. / Structure of wiggly-cosmic-string wakes. In: Physical Review D. 1992 ; Vol. 45, No. 10. pp. 3487-3496.
@article{c7b372634ac144ff9e5e1c99566ce6e3,
title = "Structure of wiggly-cosmic-string wakes",
abstract = "We investigate the structure of wiggly-cosmic-string wakes by solving the fluid equations of motion under some simplifying assumptions. The flow of collisionless matter is treated first. Then the flow of a non-self-gravitating, nonrelativistic, ideal fluid is studied and the density structure of the wake is found. For typical values of the string tension, strong shocks are formed in the wakes after the epoch of recombination. It is shown that the post-shock fluid flow in these wakes will be vortical and the vorticity will lead to the generation of a magnetic field. A potential problem in the cosmic-string scenario for structure formation and its possible resolutions are discussed.",
author = "Tanmay Vachaspati",
year = "1992",
doi = "10.1103/PhysRevD.45.3487",
language = "English (US)",
volume = "45",
pages = "3487--3496",
journal = "Physical review D: Particles and fields",
issn = "1550-7998",
publisher = "American Institute of Physics Publising LLC",
number = "10",

}

TY - JOUR

T1 - Structure of wiggly-cosmic-string wakes

AU - Vachaspati, Tanmay

PY - 1992

Y1 - 1992

N2 - We investigate the structure of wiggly-cosmic-string wakes by solving the fluid equations of motion under some simplifying assumptions. The flow of collisionless matter is treated first. Then the flow of a non-self-gravitating, nonrelativistic, ideal fluid is studied and the density structure of the wake is found. For typical values of the string tension, strong shocks are formed in the wakes after the epoch of recombination. It is shown that the post-shock fluid flow in these wakes will be vortical and the vorticity will lead to the generation of a magnetic field. A potential problem in the cosmic-string scenario for structure formation and its possible resolutions are discussed.

AB - We investigate the structure of wiggly-cosmic-string wakes by solving the fluid equations of motion under some simplifying assumptions. The flow of collisionless matter is treated first. Then the flow of a non-self-gravitating, nonrelativistic, ideal fluid is studied and the density structure of the wake is found. For typical values of the string tension, strong shocks are formed in the wakes after the epoch of recombination. It is shown that the post-shock fluid flow in these wakes will be vortical and the vorticity will lead to the generation of a magnetic field. A potential problem in the cosmic-string scenario for structure formation and its possible resolutions are discussed.

UR - http://www.scopus.com/inward/record.url?scp=33645568598&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33645568598&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.45.3487

DO - 10.1103/PhysRevD.45.3487

M3 - Article

VL - 45

SP - 3487

EP - 3496

JO - Physical review D: Particles and fields

JF - Physical review D: Particles and fields

SN - 1550-7998

IS - 10

ER -