Halo Density Profiles and Baryon Physics

doi:10.1134/S1063772917080029

	Halo Density Profiles and Baryon Physics
	Del Popolo, A.1,2,3; Li, Xi-Guo 1
刊名	ASTRONOMY REPORTS
	2017-08
卷号	61 页码:631-638
ISSN号	1063-7729
DOI	10.1134/S1063772917080029
英文摘要	The radial dependence of the pseudo phase-space density, rho(r)/sigma (3)(r) is studied. We find that the pseudo phase-space density for halos consisting both of dark matter and baryons is approximately a power-law only down to 0.1% of the virial radius while it has a non-power law behavior below the quoted scale, with inner profiles changing with mass. Halos consisting just of dark matter, as the one in dark matter only simulations, are characterized by an approximately power-law behavior. The results argue against universality of the pseudo phase-space density, when the baryons effect are included, and as a consequence argue against universality of density profiles constituted by dark matter and baryons as also discussed in [1].
资助项目	[2017 VMA0044]
WOS关键词	DARK-MATTER HALOS ; PHASE-SPACE DENSITY ; SECONDARY INFALL MODEL ; HIGH-RESOLUTION MEASUREMENTS ; SPHERICAL COLLAPSE MODEL ; GALAXY CLUSTERS ; GALACTIC HALOS ; GRAVITATIONAL COLLAPSE ; DYNAMICAL FRICTION ; ANGULAR-MOMENTUM
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	MAIK NAUKA/INTERPERIODICA/SPRINGER
WOS记录号	WOS:000407239400001
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/56813]
专题	中国科学院近代物理研究所
通讯作者	Li, Xi-Guo
作者单位	1.Chinese Acad Sci, Inst Modern Phys, POB 31, Lanzhou 730000, Gansu, Peoples R China 2.Univ Catania, Dipartimento Fis & Astron, I-95125 Catania, Italy 3.INFN, Sez Catania, Via Santa Sofia 64, I-95123 Catania, Italy
推荐引用方式 GB/T 7714	Del Popolo, A.,Li, Xi-Guo. Halo Density Profiles and Baryon Physics[J]. ASTRONOMY REPORTS,2017,61:631-638.
APA	Del Popolo, A.,&Li, Xi-Guo.(2017).Halo Density Profiles and Baryon Physics.ASTRONOMY REPORTS,61,631-638.
MLA	Del Popolo, A.,et al."Halo Density Profiles and Baryon Physics".ASTRONOMY REPORTS 61(2017):631-638.