Self-Interacting Dark Matter Subhalos in the Milky Way's Tides

被引：63

作者：

Sameie, Omid ^{[1
,2
]}

Yu, Hai-Bo ^{[1
]}

Sales, Laura, V ^{[1
]}

Vogelsberger, Mark ^{[3
]}

Zavala, Jesus ^{[4
]}

机构：

[1] Univ Calif Riverside, Dept Phys & Astron, Riverside, CA 92521 USA

[2] Univ Texas Austin, Dept Astron, 2515 Speedway,Stop C1400, Austin, TX 78712 USA

[3] MIT, Dept Phys, Kavli Inst Astrophys & Space Res, Cambridge, MA 02139 USA

[4] Univ Iceland, Ctr Astrophys & Cosmol, Sci Inst, Dunhagi 5, IS-107 Reykjavik, Iceland

来源：

PHYSICAL REVIEW LETTERS | 2020年 / 124卷 / 14期

基金：

美国国家科学基金会;

关键词：

COSMOLOGICAL SIMULATIONS; GALAXY CLUSTERS; DWARF GALAXIES; TOO BIG; HALO; CDM; EVOLUTION; SIDM; MASS; SATELLITES;

D O I：

10.1103/PhysRevLett.124.141102

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study evolution of self-interacting dark matter subhalos in the MilkyWay tidal field. The interaction between the subhalos and the Milky Way's tides lead to more diverse dark matter distributions in the inner region, compared to their cold dark matter counterparts. We test this scenario with two MilkyWay satellite galaxies, Draco and Fornax, opposite extremes in the inner dark matter content, and find that they can be accommodated within the self-interacting dark matter model proposed to explain the diverse rotation curves of spiral galaxies in the field.

引用

页数：6

共 50 条

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