Constraining the anisotropy of the universe from supernovae and gamma-ray bursts
Constraining the anisotropy of the universe from supernovae and gamma-ray bursts
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从超新星和伽马射线爆发中限制宇宙的各向异性
DOI:
10.1142/s0217732314500679
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发表时间:
2014-05
影响因子:
1.4
通讯作者:
Wang Sai
中科院分区:
文献类型:
--
作者:
Chang Zhe;Li Xin;Lin Hai-Nan;Wang Sai
Recently, an anisotropic cosmological model was proposed. An arbitrary one-form, which picks out a privileged axis in the universe, was added to the Friedmann Robertson Walker (FRW) line element. The distance-redshift relation was modified such that it is direction-dependent. In this paper, we use the Union2 dataset and 59 high-redshift gamma-ray bursts (C.:411Es) to give constraints on the anisotropy of the universe. The results show that the magnitude of anisotropy is about D = 0.044 0.018, and the privileged axis points toward the direction (to, ho) = (306.1" 18.7", 18.2" 11.2') in the galactic coordinate system. The anisotropy is small and the isotropic cosmological model is an excellent approximation.
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影响因子:
3.9
作者:
Jun-Jie Wei;Xuefeng Wu;F. Melia
通讯作者:
Jun-Jie Wei;Xuefeng Wu;F. Melia
DOI:
10.1103/physrevd.87.123522
发表时间:
2013-03
期刊:
Physical Review D - Particles, Fields, Gravitation and Cosmology
影响因子:
--
作者:
Cai, Rong-Gen;Ma, Yin-Zhe;Tang, Bo;Tuo, Zhong-Liang
通讯作者:
Tuo, Zhong-Liang
DOI:
10.1086/424915
发表时间:
2004-08
期刊:
The Astrophysical Journal Letters
影响因子:
--
作者:
G. Ghirlanda;G. Ghisellini;D. Lazzati;C. Firmani
通讯作者:
G. Ghirlanda;G. Ghisellini;D. Lazzati;C. Firmani
DOI:
10.1086/592947
发表时间:
2008-09
期刊:
The Astrophysical Journal Letters
影响因子:
--
作者:
A. Kashlinsky;F. Atrio-Barandela;D. Kocevski;H. Ebeling
通讯作者:
A. Kashlinsky;F. Atrio-Barandela;D. Kocevski;H. Ebeling
影响因子:
1.4
作者:
C. Copi;D. Huterer;D. Schwarz;G. Starkman
通讯作者:
C. Copi;D. Huterer;D. Schwarz;G. Starkman