Probing the Missing Baryons via kSZ Stacking

NAOC Open IR

	Probing the Missing Baryons via kSZ Stacking
	Miao Han 1; Lin WeiPeng 1; Zhang PengJie 1
	2016
Source Publication	RESEARCH IN ASTRONOMY AND ASTROPHYSICS
ISSN	1674-4527
Volume	16 Issue:4
Abstract	Kinetic Sunyaev-Zel'dovich (kSZ) stacking has great potential to become a powerful probe of missing baryons, due to advances in CMB experiments and galaxy surveys. In this paper, we study kSZ stacking in hydrodynamic simulations with different gastrophysics. We quantify the kSZ stacking signal as a function of halo mass, redshift and projection depth. We compare between different simulations to estimate the impact of gastrophysics such as cooling and supernova feedback. Furthermore, we measure the contribution from warm-hot intergalactic medium (WHIM), which is believed to be the reservoir for most, if not all, missing baryons. We find that the WHIM contribution is significant, at the level of similar to 10%-70%, depending on the angular separation from the stacked halos and other factors. However, contribution from the intracluster medium along the line of sight is in general non-negligible. This complexity requires more detailed and comprehensive analysis on probing the missing baryons with kSZ stacking.
Keyword	ZELDOVICH RADIATION CODE cosmology: theory large scale structure kinetic Sunyaev-Zel'dovich effect missing baryons
Language	英语
Funding Project	[National Natural Science Foundation of China] ; [National Key Basic Research Program of China] ; ["Strategic Priority Research Program the Emergence of Cosmological Structures" of the Chinese Academy of Sciences]
Document Type	期刊论文
Identifier	http://ir.bao.ac.cn/handle/114a11/57540
Collection	中国科学院国家天文台
Affiliation	1.中国科学院国家天文台 2.中国科学院广州地球化学研究所 3.上海交通大学
First Author Affilication	National Astronomical Observatories, Chinese Academy of Sciences
Recommended Citation GB/T 7714	Miao Han,Lin WeiPeng,Zhang PengJie. Probing the Missing Baryons via kSZ Stacking[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2016,16(4).
APA	Miao Han,Lin WeiPeng,&Zhang PengJie.(2016).Probing the Missing Baryons via kSZ Stacking.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,16(4).
MLA	Miao Han,et al."Probing the Missing Baryons via kSZ Stacking".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 16.4(2016).

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