Topological Defects and CMB anisotropies : Are the predictions reliable ?

Details Topological Defects and CMB anisotropies : Are the predictions reliable ? Topological Defects and CMB anisotropies : Are the predictions reliable ?

1999-10-15

arxiv.org/abs/astro-ph/9910290v2

Phys.Rev. D61 (2000) 123504

Astronomy and Astrophysics

Astrophysics

14 pages, accepted for publication in PRD

Scientific paper

10.1103/PhysRevD.61.123504

We consider a network of topological defects which can partly decay into neutrinos, photons, baryons, or Cold Dark Matter. We find that the degree-scale amplitude of the cosmic microwave background (CMB) anisotropies as well as the shape of the matter power spectrum can be considerably modified when such a decay is taken into account. We conclude that present predictions concerning structure formation by defects might be unreliable.

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