Is Dark Matter with Long-Range Interactions a Solution to All Small-Scale Problems of Λ Cold Dark Matter Cosmology?

被引：208

作者：

van den Aarssen, Laura G. ^{[1
]}

Bringmann, Torsten ^{[1
]}

Pfrommer, Christoph ^{[2
]}

机构：

[1] Univ Hamburg, Inst Theoret Phys 2, DE-22761 Hamburg, Germany

[2] Heidelberg Inst Theoret Studies, D-69118 Heidelberg, Germany

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 109卷 / 23期

关键词：

DWARF GALAXIES; OBSERVATIONAL EVIDENCE; SATELLITE GALAXIES; VELOCITY FUNCTION; MILKY; PHOTOEVAPORATION; CONSTRAINTS; CANDIDATES; DRIVEN; POWER;

D O I：

10.1103/PhysRevLett.109.231301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The cold dark matter paradigm describes the large-scale structure of the Universe remarkably well. However, there exists some tension with the observed abundances and internal density structures of both field dwarf galaxies and galactic satellites. Here, we demonstrate that a simple class of dark matter models may offer a viable solution to all of these problems simultaneously. Their key phenomenological properties are velocity-dependent self-interactions mediated by a light vector messenger and thermal production with much later kinetic decoupling than in the standard case. DOI: 10.1103/PhysRevLett.109.231301

引用

页数：6

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