Signature of a Cosmic String Wake at $z=3$

Abstract

In this paper, we describe the results of N-body simulation runs, which include a cosmic string wake of tension $G\mu =4\times 10^{-8}$ on top of the usual $\Lambda CDM$ fluctuations. To obtain a higher resolution of the wake in the simulations compared to previous work, we insert the effects of the string wake at a lower redshift and perform the simulations in a smaller volume. A curvelet analysis of the wake and no-wake maps is applied, indicating that the presence of a wake can be extracted at a three-sigma confidence level from maps of the two-dimensional dark matter projection down to a redshift of $z=3$.

Comments: 8 pages, 6 figures; We have improved the analysis and results. The text now agrees with the published version