Astronomy and Astrophysics – Astrophysics
Scientific paper
2003-12-23
Int.J.Mod.Phys. D14 (2005) 107-120
Astronomy and Astrophysics
Astrophysics
11 pages, 6 figures; minor corrections, references added; accepted for publication in IJMPD
Scientific paper
10.1142/S0218271805005165
In the mirror world hypothesis the mirror baryonic component emerges as a possible dark matter candidate. An immediate question arises: how the mirror baryons behave and what are the differences from the more familiar dark matter candidates as e.g. cold dark matter? In this paper we answer quantitatively to this question. First we discuss the dependence of the relevant scales for the structure formation (Jeans and Silk scales) on the two macroscopic parameters necessary to define the model: the temperature of the mirror plasma (limited by the Big Bang Nucleosynthesis) and the amount of mirror baryonic matter. Then we perform a complete quantitative calculation of the implications of mirror dark matter on the cosmic microwave background and large scale structure power spectrum. Finally, confronting with the present observational data, we obtain some bounds on the mirror parameter space.
Berezhiani Zurab
Ciarcelluti Paolo
Comelli Denis
Villante Francesco Lorenzo
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