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Formation Mechanism of Hierarchical Astronomical Objects in the Cosmic String Scheme

Published online by Cambridge University Press:  25 May 2016

Tetsuya Hara ,
Sigeru Miyoshi  and
Petri Mähönen
Tetsuya Hara
Affiliation:
Department of Physics, Kyoto Sangyo University, Motoyama, Kitaku, Kyoto 603, JAPAN
Sigeru Miyoshi
Affiliation:
Department of Physics, Kyoto Sangyo University, Motoyama, Kitaku, Kyoto 603, JAPAN
Petri Mähönen
Affiliation:
Department of Theoretical Physics, University of Oulu, SF-90570 Oulu, Finland

Extract

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Because of the angular deficit around cosmic string, cold dark matter(CDM) gets the velocity toward the plane of moving string and wake is formed there. It means that CDM body is cut by string, two blocks move each other, and the overlapped region becomes wake. The wake and/or block size is determined by the horizon size at zi when the wake is triggered by the string. The nonlinearity and/or thickness of the wake depends on the moving length of CDM toward the wake which depends on zi, the line density and velocity of string.

Type
IV. Structure Formation and Dark Matter
Information
Symposium - International Astronomical Union , Volume 183: Cosmological Parameters and the Evolution of the Universe , 1999 , pp. 249
Copyright
Copyright © Kluwer 1999 

References

1. Hara, T., Hideki, H., Mahonen, P., and Miyoshi, S. Astrophys. J. 461, 1 (1996).Google Scholar