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Finslerian MOND versus observations of Bullet Cluster 1E 0657-558
Li X(李昕); Li MH(李明华); Lin HN(林海南); 常哲;Li, X; Li, MH; Lin, HN; Chang, Z
2013
发表期刊MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷号428期号:4页码:2939-2948
摘要It is known that theory of MOND (Modification of Newtonian Dynamics) with spherical symmetry cannot account for the convergence kappa-map of Bullet Cluster 1E 0657-558. In this paper, we try to set up a Finslerian MOND, a generalization of MOND in Finsler space-time. We use Ric = 0 to obtain the gravitational vacuum field equation in a 4D Finsler space-time. To leading order in the post-Newtonian approximation, we obtain the explicit form of the Finslerian line element. It is simply the Schwarzschild's metric except for the Finslerian rescaling coefficient f(v) of the radial coordinate r, i.e. R = f(v) r. By setting f (v) = root 1 - (GMa(0)/v(4)), we obtain the famous MOND in a Finslerian framework. Taking a dipole and a quadrupole term into consideration, we give the convergence kappa in gravitational lensing astrophysics in our model. Numerical analysis shows that our prediction is to a certain extent in agreement with the observations of Bullet Cluster 1E 0657-558. With the theoretical temperature T taking the observed value 14.8 keV, the mass density profile of the main cluster obtained in our model is of the same order as that given by the best-fitting King beta-model.
关键词gravitational lensing: weak galaxies: clusters: individual: Bullet Cluster 1E0657-558 galaxies: kinematics and dynamics galaxies: clusters: intracluster medium dark matter
学科领域Astronomy & Astrophysics
DOI10.1093/mnras/sts237
收录类别SCI
WOS记录号WOS:000318232000012
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被引频次:11[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/224218
专题理论物理室
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Li X,Li MH,Lin HN,et al. Finslerian MOND versus observations of Bullet Cluster 1E 0657-558[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2013,428(4):2939-2948.
APA 李昕.,李明华.,林海南.,常哲;Li, X.,Li, MH.,...&Chang, Z.(2013).Finslerian MOND versus observations of Bullet Cluster 1E 0657-558.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,428(4),2939-2948.
MLA 李昕,et al."Finslerian MOND versus observations of Bullet Cluster 1E 0657-558".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 428.4(2013):2939-2948.
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