NAOC Open IR
A robust determination of halo environment in the cosmic field
Wang, Peng1,2; Kang, Xi1,3; Libeskind, Noam, I2,4; Guo, Quan5; Gottloeber, Stefan2; Wang, Wei1,6
2020-10-01
Source PublicationNEW ASTRONOMY
ISSN1384-1076
Volume80Pages:8
AbstractA number of methods for studying the large-scale cosmic matter distribution exist in the literature. One particularly common method employed to define the cosmic web is to examine the density, velocity or potential field. Such methods are advantageous since a Hessian matrix can be constructed whose eigenvectors (and eigenvalues) indicate the principal directions (and strength) of local collapse or expansion. Technically this is achieved by diagonalizing the Hessian matrix using a fixed finite grid. The resultant large-scale structure quantification is thus inherently limited by the grid's finite resolution. Here, we overcome the obstacle of finite grid resolution by introducing a new method to determine halo environment using an adaptive interpolation which is more robust to resolution than the typical " Nearest Grid Point" (NGP) method. Essentially instead of computing and diagonalizing the Hessian matrix once for the entire grid, we suggest doing so once for each halo or galaxy in question. We examine how the eigenvalues and eigenvector direction's computed using our algorithm and the NGP method converge for different grid resolutions, finding that our new method is convergent faster. Namely changes of resolution have a much smaller effect than in the NGP method. We therefore suggest this method for future use by the community.
Keywordlarge-scale structure of Universe cosmic web dark matter halo simulation
Funding Organizationjoint Sino-German DFG research Project "The Cosmic Web and its impact on galaxy formation and alignment" ; joint Sino-German DFG research Project "The Cosmic Web and its impact on galaxy formation and alignment" ; NSFC ; NSFC ; 973 program ; 973 program ; NSF of Jiangsu Province ; NSF of Jiangsu Province ; Shanghai Pujiang Program ; Shanghai Pujiang Program ; Project IDEXLYON at the University of Lyon under the Investments for the Future Program ; Project IDEXLYON at the University of Lyon under the Investments for the Future Program ; joint Sino-German DFG research Project "The Cosmic Web and its impact on galaxy formation and alignment" ; joint Sino-German DFG research Project "The Cosmic Web and its impact on galaxy formation and alignment" ; NSFC ; NSFC ; 973 program ; 973 program ; NSF of Jiangsu Province ; NSF of Jiangsu Province ; Shanghai Pujiang Program ; Shanghai Pujiang Program ; Project IDEXLYON at the University of Lyon under the Investments for the Future Program ; Project IDEXLYON at the University of Lyon under the Investments for the Future Program ; joint Sino-German DFG research Project "The Cosmic Web and its impact on galaxy formation and alignment" ; joint Sino-German DFG research Project "The Cosmic Web and its impact on galaxy formation and alignment" ; NSFC ; NSFC ; 973 program ; 973 program ; NSF of Jiangsu Province ; NSF of Jiangsu Province ; Shanghai Pujiang Program ; Shanghai Pujiang Program ; Project IDEXLYON at the University of Lyon under the Investments for the Future Program ; Project IDEXLYON at the University of Lyon under the Investments for the Future Program ; joint Sino-German DFG research Project "The Cosmic Web and its impact on galaxy formation and alignment" ; joint Sino-German DFG research Project "The Cosmic Web and its impact on galaxy formation and alignment" ; NSFC ; NSFC ; 973 program ; 973 program ; NSF of Jiangsu Province ; NSF of Jiangsu Province ; Shanghai Pujiang Program ; Shanghai Pujiang Program ; Project IDEXLYON at the University of Lyon under the Investments for the Future Program ; Project IDEXLYON at the University of Lyon under the Investments for the Future Program
DOI10.1016/j.newast.2020.101405
WOS KeywordDARK-MATTER HALOES ; SATELLITE GALAXIES ; SPIN ; FILAMENTS ; ALIGNMENT ; EVOLUTION ; WEB ; ORIENTATION ; CLUSTERS ; SHEETS
Language英语
Funding Projectjoint Sino-German DFG research Project "The Cosmic Web and its impact on galaxy formation and alignment"[DFG-LI 2015/5-1] ; NSFC[11825303] ; NSFC[11861131006] ; NSFC[11333008] ; 973 program[2015CB857003] ; 973 program[2013CB834900] ; NSF of Jiangsu Province[BK20140050] ; Shanghai Pujiang Program[19PJ1410700] ; Project IDEXLYON at the University of Lyon under the Investments for the Future Program[ANR-16-IDEX-0005]
Funding Organizationjoint Sino-German DFG research Project "The Cosmic Web and its impact on galaxy formation and alignment" ; joint Sino-German DFG research Project "The Cosmic Web and its impact on galaxy formation and alignment" ; NSFC ; NSFC ; 973 program ; 973 program ; NSF of Jiangsu Province ; NSF of Jiangsu Province ; Shanghai Pujiang Program ; Shanghai Pujiang Program ; Project IDEXLYON at the University of Lyon under the Investments for the Future Program ; Project IDEXLYON at the University of Lyon under the Investments for the Future Program ; joint Sino-German DFG research Project "The Cosmic Web and its impact on galaxy formation and alignment" ; joint Sino-German DFG research Project "The Cosmic Web and its impact on galaxy formation and alignment" ; NSFC ; NSFC ; 973 program ; 973 program ; NSF of Jiangsu Province ; NSF of Jiangsu Province ; Shanghai Pujiang Program ; Shanghai Pujiang Program ; Project IDEXLYON at the University of Lyon under the Investments for the Future Program ; Project IDEXLYON at the University of Lyon under the Investments for the Future Program ; joint Sino-German DFG research Project "The Cosmic Web and its impact on galaxy formation and alignment" ; joint Sino-German DFG research Project "The Cosmic Web and its impact on galaxy formation and alignment" ; NSFC ; NSFC ; 973 program ; 973 program ; NSF of Jiangsu Province ; NSF of Jiangsu Province ; Shanghai Pujiang Program ; Shanghai Pujiang Program ; Project IDEXLYON at the University of Lyon under the Investments for the Future Program ; Project IDEXLYON at the University of Lyon under the Investments for the Future Program ; joint Sino-German DFG research Project "The Cosmic Web and its impact on galaxy formation and alignment" ; joint Sino-German DFG research Project "The Cosmic Web and its impact on galaxy formation and alignment" ; NSFC ; NSFC ; 973 program ; 973 program ; NSF of Jiangsu Province ; NSF of Jiangsu Province ; Shanghai Pujiang Program ; Shanghai Pujiang Program ; Project IDEXLYON at the University of Lyon under the Investments for the Future Program ; Project IDEXLYON at the University of Lyon under the Investments for the Future Program
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000539402600002
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/83333
Collection中国科学院国家天文台
Corresponding AuthorWang, Peng
Affiliation1.Purple Mt Observ, 8 Yuan Hua Rd, Nanjing 210034, Peoples R China
2.Leibniz Inst Astrophys Potsdam, Sternwarte 16, D-14482 Potsdam, Germany
3.Zhejiang Univ, Purple Mt Observ Joint Res Ctr Astron, Hangzhou 310027, Peoples R China
4.Univ Lyon, UCB Lyon 1, CNRS, IPN Lyon,IN2P3, Lyon, France
5.Shanghai Astron Observ, Nandan Rd 80, Shanghai 200030, Peoples R China
6.Univ Sci & Technol China, Sch Astron & Space Sci, Hefei 230026, Peoples R China
Recommended Citation
GB/T 7714
Wang, Peng,Kang, Xi,Libeskind, Noam, I,et al. A robust determination of halo environment in the cosmic field[J]. NEW ASTRONOMY,2020,80:8.
APA Wang, Peng,Kang, Xi,Libeskind, Noam, I,Guo, Quan,Gottloeber, Stefan,&Wang, Wei.(2020).A robust determination of halo environment in the cosmic field.NEW ASTRONOMY,80,8.
MLA Wang, Peng,et al."A robust determination of halo environment in the cosmic field".NEW ASTRONOMY 80(2020):8.
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