Fitting a self-interacting dark matter model to data ranging from satellite galaxies to galaxy clusters

被引：8

作者：

Girmohanta, Sudhakantha ^{[1
,2
,3
,4
]}

Shrock, Robert ^{[1
,2
]}

机构：

[1] SUNY Stony Brook, CN Yang Inst Theoret Phys, Stony Brook, NY 11794 USA

[2] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA

[3] Shanghai Jiao Tong Univ, Tsung Dao Lee Inst, 800 Dongchuan Rd, Shanghai 200240, Peoples R China

[4] Shanghai Jiao Tong Univ, Sch Phys & Astron, 800 Dongchuan Rd, Shanghai 200240, Peoples R China

来源：

PHYSICAL REVIEW D | 2023年 / 107卷 / 06期

基金：

美国国家科学基金会;

关键词：

INTERACTION CROSS-SECTION; DENSITY PROFILES; COSMOLOGICAL SIMULATIONS; DWARF GALAXIES; HALOES; MILKY; CDM; CONSTRAINTS; SIGNATURES; FEEDBACK;

D O I：

10.1103/PhysRevD.107.063006

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a fit to observational data in an asymmetric self-interacting dark matter model using our recently calculated cross sections that incorporate both t -channel and u -channel exchanges in the scattering of identical particles. We find good fits to the data ranging from dwarf galaxies to galaxy clusters and equivalent relative velocities from-20 km/s to greater than or similar to 103 km/s. We compare our results with previous fits that used only t -channel exchange contributions to the scattering.

引用

页数：9

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