NAOC Open IR
The Breakdown Scale of H I Bias Linearity
Wang, Zhenyuan1,2; Chen, Yangyao1,3; Mao, Yi1; Mo, Houjun1,3; Wang, Huiyuan4; Guo, Hong5; Li, Cheng1; Fu, Jian5; Jing, Yipeng6,7; Wang, Jing8; Yang, Xiaohu6,7; Zheng, Zheng9
2021
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume907Issue:1Pages:8
AbstractThe 21 cm intensity mapping experiments promise to obtain the large-scale distribution of H i gas at the post-reionization epoch. In order to reveal the underlying matter density fluctuations from the H i mapping, it is important to understand how H i gas traces the matter density distribution. Both nonlinear halo clustering and nonlinear effects modulating H i gas in halos may determine the scale below which the H i bias deviates from linearity. We employ three approaches to generate the mock H i density from a large-scale N-body simulation at low redshifts, and demonstrate that the assumption of H i linearity is valid at the scale corresponding to the first peak of baryon acoustic oscillations, but breaks down at k greater than or similar to 0.1 h Mpc(-1). The nonlinear effects of halo clustering and H i content modulation counteract each other at small scales, and their competition results in a model-dependent "sweet-spot" redshift near z = 1, where the H i bias is scale-independent down to small scales. We also find that the linear H i bias scales approximately linearly with redshift for z <= 3.
KeywordH I line emission Line intensities Galaxy dark matter halos Large-scale structure of the universe
Funding OrganizationNational Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Chinese National Thousand Youth Talents Program ; Chinese National Thousand Youth Talents Program ; Youth innovation Promotion Association CAS ; Youth innovation Promotion Association CAS ; Shanghai Committee of Science and Technology ; Shanghai Committee of Science and Technology ; NSF ; NSF ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Chinese National Thousand Youth Talents Program ; Chinese National Thousand Youth Talents Program ; Youth innovation Promotion Association CAS ; Youth innovation Promotion Association CAS ; Shanghai Committee of Science and Technology ; Shanghai Committee of Science and Technology ; NSF ; NSF ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Chinese National Thousand Youth Talents Program ; Chinese National Thousand Youth Talents Program ; Youth innovation Promotion Association CAS ; Youth innovation Promotion Association CAS ; Shanghai Committee of Science and Technology ; Shanghai Committee of Science and Technology ; NSF ; NSF ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Chinese National Thousand Youth Talents Program ; Chinese National Thousand Youth Talents Program ; Youth innovation Promotion Association CAS ; Youth innovation Promotion Association CAS ; Shanghai Committee of Science and Technology ; Shanghai Committee of Science and Technology ; NSF ; NSF
DOI10.3847/1538-4357/abcb8a
WOS KeywordREDSHIFT SPACE DISTORTION ; TO-MOLECULAR TRANSITION ; STAR-FORMATION LAW ; NEUTRAL HYDROGEN ; PERTURBATION-THEORY ; POWER SPECTRUM ; HALO MODEL ; SIMULATION ; EVOLUTION ; EMISSION
Language英语
Funding ProjectNational Key R&D Program of China[2018YFA0404502] ; National Key R&D Program of China[2018YFA0404503] ; National Key R&D Program of China[2017YFB0203302] ; National Natural Science Foundation of China (NSFC)[11673014] ; National Natural Science Foundation of China (NSFC)[11761141012] ; National Natural Science Foundation of China (NSFC)[11821303] ; National Natural Science Foundation of China (NSFC)[11543006] ; National Natural Science Foundation of China (NSFC)[11833005] ; National Natural Science Foundation of China (NSFC)[11828302] ; National Natural Science Foundation of China (NSFC)[11922305] ; National Natural Science Foundation of China (NSFC)[11733004] ; National Natural Science Foundation of China (NSFC)[11773049] ; National Natural Science Foundation of China (NSFC)[11761131004] ; National Natural Science Foundation of China (NSFC)[11673015] ; National Natural Science Foundation of China (NSFC)[11421303] ; National Natural Science Foundation of China (NSFC)[11721303] ; National Natural Science Foundation of China (NSFC)[U1531123] ; Chinese National Thousand Youth Talents Program ; Youth innovation Promotion Association CAS ; Shanghai Committee of Science and Technology[19ZR1466700] ; NSF[AST-1517528]
Funding OrganizationNational Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Chinese National Thousand Youth Talents Program ; Chinese National Thousand Youth Talents Program ; Youth innovation Promotion Association CAS ; Youth innovation Promotion Association CAS ; Shanghai Committee of Science and Technology ; Shanghai Committee of Science and Technology ; NSF ; NSF ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Chinese National Thousand Youth Talents Program ; Chinese National Thousand Youth Talents Program ; Youth innovation Promotion Association CAS ; Youth innovation Promotion Association CAS ; Shanghai Committee of Science and Technology ; Shanghai Committee of Science and Technology ; NSF ; NSF ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Chinese National Thousand Youth Talents Program ; Chinese National Thousand Youth Talents Program ; Youth innovation Promotion Association CAS ; Youth innovation Promotion Association CAS ; Shanghai Committee of Science and Technology ; Shanghai Committee of Science and Technology ; NSF ; NSF ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Chinese National Thousand Youth Talents Program ; Chinese National Thousand Youth Talents Program ; Youth innovation Promotion Association CAS ; Youth innovation Promotion Association CAS ; Shanghai Committee of Science and Technology ; Shanghai Committee of Science and Technology ; NSF ; NSF
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000608872100001
PublisherIOP PUBLISHING LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/80011
Collection中国科学院国家天文台
Corresponding AuthorMao, Yi
Affiliation1.Tsinghua Univ, Dept Astron, Beijing 100084, Peoples R China
2.Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA
3.Univ Massachusetts, Dept Astron, Amherst, MA 01003 USA
4.Univ Sci & Technol China, Dept Astron, Key Lab Res Galaxies & Cosmol, Hefei 230026, Anhui, Peoples R China
5.Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, Shanghai 200030, Peoples R China
6.Shanghai Jiao Tong Univ, Dept Astron, Shanghai 200240, Peoples R China
7.Shanghai Jiao Tong Univ, Tsung Dao Lee Inst, Shanghai 200240, Peoples R China
8.Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China
9.Univ Utah, Dept Phys & Astron, 115 South 1400 East, Salt Lake City, UT 84112 USA
Recommended Citation
GB/T 7714
Wang, Zhenyuan,Chen, Yangyao,Mao, Yi,et al. The Breakdown Scale of H I Bias Linearity[J]. ASTROPHYSICAL JOURNAL,2021,907(1):8.
APA Wang, Zhenyuan.,Chen, Yangyao.,Mao, Yi.,Mo, Houjun.,Wang, Huiyuan.,...&Zheng, Zheng.(2021).The Breakdown Scale of H I Bias Linearity.ASTROPHYSICAL JOURNAL,907(1),8.
MLA Wang, Zhenyuan,et al."The Breakdown Scale of H I Bias Linearity".ASTROPHYSICAL JOURNAL 907.1(2021):8.
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