Global textures and the formation of self-bound gravitational systems |
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| Authors: | A L B Ribeiro P S Letelier |
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| Institution: | Departamento de Matemática Aplicada –Instituto de Matemática Estatística e Computação Científica, Universidade Estadual de Campinas, 13083-970 SP, Brazil |
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| Abstract: | Using a Newtonian approximation we developed a quantitative criterion for the collapse of a spherical distribution of matter under an isolated texture field. In particular, we found the evolution of an overdense region is strongly determined by two parameters: the energy scale of symmetry breaking ( η ) and the initial radius of the system. Applying our collapse criterion to typical galaxy scales we verified the formation of 1011‐M⊙ objects at z ?9 and 1012‐M⊙ objects at z ?5. |
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| Keywords: | cosmology: miscellaneous large-scale structure of Universe |
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