Probing the universality of acceleration scale in modified Newtonian dynamics with SPARC galaxies
Probing the universality of acceleration scale in modified Newtonian dynamics with SPARC galaxies
复制标题
用 SPARC 星系探讨修正牛顿动力学中加速度尺度的普遍性
DOI:
10.1088/1674-1137/abce53
复制
发表时间:
2020-11
影响因子:
3.6
通讯作者:
Yong Zhou
中科院分区:
文献类型:
--
作者:
Xin Li;Su-Ping Zhao;Hai-Nan Lin;Yong Zhou
We probe the universality of acceleration scale in Milgrom's modified Newtonian dynamics (MOND) using the recently released rotation curve data from SPARC galaxies. We divide the SPARC data into different subsamples according to the morphological types of galaxies, and fit the rotation curve data of each subsample with the theoretical prediction of MOND. MOND involves an arbitrary interpolation function which connects the Newtonian region and the MOND region. Here we consider five different interpolation functions that are widely discussed in the literature. It is shown that the best-fitting significantly depends on the interpolation functions. For a specific interpolation function, also depends on the morphological types of galaxies, implying that may be not a universal constant. Introducing a dipole correction to can significantly improve the fits. The dipole directions for four of the five interpolation functions point towards an approximately consistent direction, but still varies for different interpolation functions.
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影响因子:
4.4
作者:
Chang, Zhe;Li, Ming-Hua;Li, Xin;Lin, Hai-Nan;Wang, Sai
通讯作者:
Wang, Sai
DOI:
10.1086/158003
发表时间:
1980-06
期刊:
The Astrophysical Journal
影响因子:
--
作者:
V. Rubin;W. Ford;N. Thonnard
通讯作者:
V. Rubin;W. Ford;N. Thonnard
影响因子:
6.4
作者:
John W. Moffat
通讯作者:
John W. Moffat
影响因子:
4.8
作者:
Chang Z.;Zhou Y.
通讯作者:
Zhou Y.
DOI:
10.1146/annurev.astro.40.060401.093923
发表时间:
2002-04
影响因子:
33.3
作者:
R. Sanders;S. McGaugh
通讯作者:
R. Sanders;S. McGaugh