Small-scale clumps of dark matter

Small-scale clumps of dark matter are gravitationally bounded structures that have masses comparable to or lower than stellar masses and consist of noninteracting or weakly interacting dark matter particles. In this paper, the current knowledge about the formation and evolution of such structures is...

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Bibliographic Details
Published in:Physics Uspekhi 2014-01, Vol.57 (1), p.1-36
Main Authors: Berezinsky, V S, Dokuchaev, V I, Eroshenko, Yu N
Format: Article
Language:English
Subjects:
Clumps
Dark matter
Evolution
Formations
Perturbation methods
Small scale
Spectra
Stellar mass
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Summary:Small-scale clumps of dark matter are gravitationally bounded structures that have masses comparable to or lower than stellar masses and consist of noninteracting or weakly interacting dark matter particles. In this paper, the current knowledge about the formation and evolution of such structures is reviewed, various types of spectra of primordial cosmological perturbations are considered, and various dark matter models are discussed. Depending on the particular spectrum type, dark matter clumps may differ considerably in their formation processes and ultimate characteristics. The role of clumps in experiments on indirect detection of dark matter particles via their annihilation products is discussed. A number of astrophysical problems and phenomena that are related to dark matter clumps are examined.
ISSN:1063-7869
1468-4780
DOI:10.3367/UFNe.0184.201401a.0003