Galaxy formation from kinky cosmic strings

Details Galaxy formation from kinky cosmic strings Galaxy formation from kinky cosmic strings

May 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...354l..41b&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 354, May 10, 1990, p. L41-L44. Research supported by NSF.

Statistics

Computation

19

Cosmology, Galactic Clusters, Galactic Evolution, String Theory, Computational Astrophysics, Density Distribution

Scientific paper

It is shown that the discontinuities (known as 'kinks') which are produced whenever cosmic strings interact with each other play an important role in the evolution of cosmic string networks. It is argued that there is no physical mechanism that can prevent the build-up of kinks on the long strings, and that the build-up of kinks on the long strings prevents the formation of significant numbers of large stable loops. This means that the dominant density fluctuations from cosmic strings are the sheetlike wakes which form in the path of the long strings contrary to the asssumptions of the 'old' string-induced galaxy formation scenario in which stable loops caused the dominant perturbations. At present, galaxy and large-scale structure formation with cosmic strings is essentially unexplored, but there is some hope that strings might provide a natural explanation of the 'sheetlike' nature of galaxy clustering.

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