ITP OpenIR  > 理论物理所2017年知识产出
Comparing dark matter models, modified Newtonian dynamics and modified gravity in accounting for galaxy rotation curves
Li, X; Tang, L; Lin, HN; Li, X (reprint author), Chongqing Univ, Dept Phys, Chongqing 401331, Peoples R China.; Li, X (reprint author), Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China.
2017
发表期刊CHINESE PHYSICS C
卷号41期号:5页码:55101
文章类型Article
摘要We compare six models (including the baryonic model, two dark matter models, two modified Newtonian dynamics models and one modified gravity model) in accounting for galaxy rotation curves. For the dark matter models, we assume NFW profile and core-modified profile for the dark halo, respectively. For the modified Newtonian dynamics models, we discuss Milgrom's MOND theory with two different interpolation functions, the standard and the simple interpolation functions. For the modified gravity, we focus on Moffat's MSTG theory. We fit these models to the observed rotation curves of 9 high-surface brightness and 9 low-surface brightness galaxies. We apply the Bayesian Information Criterion and the Akaike Information Criterion to test the goodness-of-fit of each model. It is found that none of the six models can fit all the galaxy rotation curves well. Two galaxies can be best fitted by the baryonic model without involving nonluminous dark matter. MOND can fit the largest number of galaxies, and only one galaxy can be best fitted by the MSTG model. Core-modified model fits about half the LSB galaxies well, but no HSB galaxies, while the NFW model fits only a small fraction of HSB galaxies but no LSB galaxies. This may imply that the oversimplified NFW and core-modified profiles cannot model the postulated dark matter haloes well.
关键词Galaxies: Kinematics And Dynamics Galaxies: Photometry Galaxies: Spiral
学科领域Physics
资助者Fundamental Research Funds for the Central Universities [106112016CDJCR301206] ; Fundamental Research Funds for the Central Universities [106112016CDJCR301206] ; National Natural Science Fund of China [11305181, 11547305, 11603005] ; National Natural Science Fund of China [11305181, 11547305, 11603005] ; Open Project Program of State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, China [Y5KF181CJ1] ; Open Project Program of State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, China [Y5KF181CJ1] ; Fundamental Research Funds for the Central Universities [106112016CDJCR301206] ; Fundamental Research Funds for the Central Universities [106112016CDJCR301206] ; National Natural Science Fund of China [11305181, 11547305, 11603005] ; National Natural Science Fund of China [11305181, 11547305, 11603005] ; Open Project Program of State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, China [Y5KF181CJ1] ; Open Project Program of State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, China [Y5KF181CJ1]
DOIhttp://dx.doi.org/10.1088/1674-1137/41/5/055101
关键词[WOS]SURFACE BRIGHTNESS GALAXIES ; SPIRAL GALAXIES ; DENSITY PROFILES ; MASS MODELS ; MILKY-WAY ; HALOS ; CONFRONTATION ; THINGS ; DWARF
语种英语
资助者Fundamental Research Funds for the Central Universities [106112016CDJCR301206] ; Fundamental Research Funds for the Central Universities [106112016CDJCR301206] ; National Natural Science Fund of China [11305181, 11547305, 11603005] ; National Natural Science Fund of China [11305181, 11547305, 11603005] ; Open Project Program of State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, China [Y5KF181CJ1] ; Open Project Program of State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, China [Y5KF181CJ1] ; Fundamental Research Funds for the Central Universities [106112016CDJCR301206] ; Fundamental Research Funds for the Central Universities [106112016CDJCR301206] ; National Natural Science Fund of China [11305181, 11547305, 11603005] ; National Natural Science Fund of China [11305181, 11547305, 11603005] ; Open Project Program of State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, China [Y5KF181CJ1] ; Open Project Program of State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, China [Y5KF181CJ1]
WOS类目Physics, Nuclear ; Physics, Particles & Fields
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/22063
专题理论物理所2017年知识产出
通讯作者Li, X (reprint author), Chongqing Univ, Dept Phys, Chongqing 401331, Peoples R China.; Li, X (reprint author), Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China.
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Li, X,Tang, L,Lin, HN,et al. Comparing dark matter models, modified Newtonian dynamics and modified gravity in accounting for galaxy rotation curves[J]. CHINESE PHYSICS C,2017,41(5):55101.
APA Li, X,Tang, L,Lin, HN,Li, X ,&Li, X .(2017).Comparing dark matter models, modified Newtonian dynamics and modified gravity in accounting for galaxy rotation curves.CHINESE PHYSICS C,41(5),55101.
MLA Li, X,et al."Comparing dark matter models, modified Newtonian dynamics and modified gravity in accounting for galaxy rotation curves".CHINESE PHYSICS C 41.5(2017):55101.
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