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The First Constraint from SDSS Galaxy–Galaxy Weak Lensing Measurements on Interacting Dark Energy Models
Zhang,Jiajun1; An,Rui1,2; Luo,Wentao1,3; Li,Zhaozhou1; Liao,Shihong4; Wang,Bin5,6
2019-04-15
Source PublicationThe Astrophysical Journal Letters
ISSN2041-8205
Volume875Issue:2
AbstractAbstract We combine constraints from linear and nonlinear scales, for the first time, to study the interaction between dark matter (DM) and dark energy (DE). We devise a novel N-body simulation pipeline for cosmological models beyond ΛCDM. This pipeline is fully self-consistent and opens a new window to study the nonlinear structure formation in general phenomenological interacting DE models. By comparing our simulation results with the SDSS galaxy–galaxy weak lensing measurements, we are able to constrain the strength of interaction between DE and DM. Compared with the previous studies using linear examinations, we point to plausible improvements on the constraints of interaction strength by using small-scale information from weak lensing. This improvement is mostly due to the sensitivity of weak lensing measurements on nonlinear structure formation at low redshift. With this new pipeline, it is possible to look for smoking gun signatures of DM–DE interaction.
Keywordcosmology: observations cosmology: theory dark energy dark matter gravitational lensing: weak methods: numerical
DOI10.3847/2041-8213/ab133f
Language英语
WOS IDIOP:2041-8205-875-2-ab133f
PublisherThe American Astronomical Society
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Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/28842
Collection中国科学院国家天文台
Affiliation1.Department of Astronomy, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China liamzhang@sjtu.edu.cn
2.IFSA Collaborative Innovation Center, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China; an_rui@sjtu.edu.cn
3.Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU, WPI), Tokyo Institutes for Advanced Study, The University of Tokyo, Chiba, 277-8582, Japan
4.Key Laboratory for Computational Astrophysics, National Astronomical Observatories, Chinese Academy of Sciences, Beijing, 100012, People's Republic of China
5.Center for Gravitation and Cosmology, College of Physical Science and Technology, Yangzhou University, Yangzhou, 225009, People's Republic of China wangb@yzu.edu.cn
6.School of Aeronautics and Astronautics, Shanghai Jiao Tong University, Shanghai 200240, People’s Republic of China
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GB/T 7714
Zhang,Jiajun,An,Rui,Luo,Wentao,等. The First Constraint from SDSS Galaxy–Galaxy Weak Lensing Measurements on Interacting Dark Energy Models[J]. The Astrophysical Journal Letters,2019,875(2).
APA Zhang,Jiajun,An,Rui,Luo,Wentao,Li,Zhaozhou,Liao,Shihong,&Wang,Bin.(2019).The First Constraint from SDSS Galaxy–Galaxy Weak Lensing Measurements on Interacting Dark Energy Models.The Astrophysical Journal Letters,875(2).
MLA Zhang,Jiajun,et al."The First Constraint from SDSS Galaxy–Galaxy Weak Lensing Measurements on Interacting Dark Energy Models".The Astrophysical Journal Letters 875.2(2019).
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