Cosmic Strings and Structure Formation

Details Cosmic Strings and Structure Formation Cosmic Strings and Structure Formation

1998-10-26

arxiv.org/abs/astro-ph/9810409v1

Astronomy and Astrophysics

Astrophysics

15 pages, latex, 8 embedded figures. To appear in the proceedings of the Second International Workshop on Dark Matter (DARK98)

Scientific paper

We discuss structure formation in cosmic string theories. Emphasis is laid on the properties of the peculiar velocity field, non-gaussian features and clusters of galaxies. It is found that the predicted peculiar velocity field is quiet ($v<150$ km/s for $L>30 h^{-1}$ Mpc) for models with ($\Omega_0 h \leq 0.2$) which is in disagreement with the results from POTENT at large scales ($>30h^{-1}$ Mpc), consistent, however, with the analysis of the peculiar velocity field of spiral galaxies by Giovannelli et al.. Using the Press-Schechter formalism we calculate the abundances of X-ray clusters. It is found that in CDM models a mass fluctuation $\sigma_8 = 0.6...0.7$ is needed with $\Omega_0 h =0.1...0.2$ in order to explain the current data.

Affiliated with

Also associated with

No associations

Rating

Cosmic Strings and Structure Formation does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Cosmic Strings and Structure Formation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cosmic Strings and Structure Formation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-311162