scholarly journals Implications of cosmic strings with time-varying tension on the CMB and large scale structure

2006 ◽  
Vol 74 (6) ◽  
Author(s):  
Kazuhide Ichikawa ◽  
Tomo Takahashi ◽  
Masahide Yamaguchi
Keyword(s):  
Large Scale ◽  
Cosmic Strings ◽  
Large Scale Structure ◽  
Scale Structure ◽  
Time Varying

Large-scale structure from wiggly cosmic strings

1991 ◽  
Vol 67 (9) ◽  
pp. 1057-1061 ◽  
Author(s):  
Tanmay Vachaspati ◽  
Alexander Vilenkin
Keyword(s):  
Large Scale ◽  
Cosmic Strings ◽  
Large Scale Structure ◽  
Scale Structure

COSMIC STRINGS, HOT DARK MATTER AND THE LARGE-SCALE STRUCTURE OF THE UNIVERSE

1990 ◽  
Vol 05 (09) ◽  
pp. 1633-1651 ◽  
Author(s):  
ROBERT H. BRANDENBERGER ◽  
LEANDROS PERIVOLAROPOULOS ◽  
ALBERT STEBBINS
Keyword(s):  
Dark Matter ◽  
Galaxy Formation ◽  
Large Scale ◽  
Cosmic Strings ◽  
Unit Length ◽  
Large Scale Structure ◽  
Scale Structure ◽  
Rotation Curves ◽  
The Universe

A review of recent results on large-scale structure and galaxy formation in a model with hot dark matter and cosmic strings is given. With cosmic strings seeding perturbations, many of the arguments against hot dark matter disappear. It is shown that spherical accretion about loops leads to dark matter haloes with flat velocity rotation curves. Velocity perturbations due to wakes behind long, moving strings lead to a network of planar overdensities with a distinguished scale of slightly less than 40×40 Mpc2. If the mass per unit length μ exceeds a certain bound, then the wakes become nonlinear by the present time. In this case, their thickness can be calculated.

scholarly journals Summary

1988 ◽  
Vol 130 ◽  
pp. 495-505
Author(s):  
P. J. E. Peebles
Keyword(s):  
Dark Matter ◽  
Large Scale ◽  
Cold Dark Matter ◽  
Cosmic Strings ◽  
Large Scale Structure ◽  
Observational Evidence ◽  
Scale Structure ◽  
Scale Invariant ◽  
The Real ◽  
Weak Points

This conference has been marked by our willingness to entertain grand schemes of synthesis of theoretical ideas and the observational evidence on how galaxies and large-scale structure might have formed. At IAU Symposium 104 on this subject held in Crete just 5 years ago there was little discussion of how all the pieces of the puzzle might fit together. Now we have at least three candidate grand syntheses that have been worked out in some detail and have been discussed here: scale-invariant cold dark matter, by Frenk; massive cosmic strings, by Turok; and exploding magnetized superconducting cosmic strings, by Ostriker. I have accordingly placed each of the topics I want to review under the heading of the grand scheme for which it seems most embarrassing. This negative approach is a little unfair, but I think we can take it as given that we would not be considering a scheme that did not have many good points, and that the real interest is the probing of weak points by which we hope to learn which schemes might be strengthened, which might safely be abandoned.

Sign in / Sign up

Export Citation Format

Share Document