54 citations · 56 across the 4 of their papers we have counts for
4 papers
Evidence against non-cosmological redshifts of QSOs in SDSS data
Sumin Tang, Shuang Nan Zhang
In the unusual intrinsic QSO redshift models, QSOs are ejected by active galaxies with periodic non-cosmological reshifts, thus QSOs are generally associated with active galaxies,…
Time lag in the X-ray Dust Scattering Halo of Cyg X-1
Shuang Nan Zhang, Zhixing Ling, Jingen Xiang +1
This paper has been withdrawn temporarily by the authors, because we are waiting for referee report of the paper submitted to ApJ.
How to Distinguish Dark Energy and Modified Gravity?
Hao Wei, Shuang Nan Zhang
The current accelerated expansion of our universe could be due to an unknown energy component (dark energy) or a modification to general relativity (modified gravity). In the liter…
Gibbons-Maeda-de Sitter Black Holes
Chang Jun Gao, Shuang Nan Zhang
The metric of Gibbons-Maeda black hole in the presence of a cosmological constant is constructed and verified. The dilaton potential with respect to the cosmological constant is ob…