1-8 Surface Density of Haloes

• 作者: Antonino Del POPOLO Lee Xiguo
• 来源期刊: 中国科学院近代物理研究所和兰州重离子研究装置年报：英文版
• 学科: 物理学
• 年，卷（期）: 2016,（1）
• 页码范围: 14-15
• 页数: 2页
• 分类号: O4

摘要

In study of dark matter density distributions,there are three types of dark matter halo distributions of galaxies and clusters of galaxies.The NFW(Navarro-Frenk-White)profile[1]ρ(r)NFW=ρ0/(r/rr0)(1+(r/rs))^2(1),whereρ0 and rs are paramenters from halo to halo.The Burkert profile isρ(r)Burkert=ρ0/(1+r/r0)(1+(r/r0)^2),and isothermal profileρ(r)ISO=ρ0/(1+(r/rs))^2,whereρ0,r0 is the center density and radius of dark matter halos.The curves of(1),(2)and(3)are shown in Fig.1.Fig.1 shows that there exist the cored density profile and cuspy problem in the Burkert profile,Quasi ISo profile and NFW profile.