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We study the stability of cosmic string wakes against the disruption by the dominant Gaussian fluctuations which are present in cosmological models. We find that for a string tension given by G=10^-7 wakes remain locally stable until a redshift of z=6, and for a value of G=10^-14 they are stable beyond a redshift of z=20. We study a global stability criterion which shows that wakes created by strings at times after t₄ₐ are identifiable up to the present time, independent of the value of G. Taking into account our criteria it is possible to develop strategies to search for the distinctive position space signals in cosmological maps which are induced by wakes.
Cunha et al. (Wed,) studied this question.