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58 papers
A Note on the Kaluza-Klein Theory
Li-Xin Li
We show that the Kaluza-Klein theory contains a fundamental problem: The four-dimensional metric tensor and the electromagnetic potential vector assumed in the Kaluza-Klein theory…
Gamma-Ray Emission Produced by -process Elements from Neutron Star Mergers
Meng-Hua Chen, Li-Xin Li, Da-Bin Lin +1
The observation of a radioactively powered kilonova AT~2017gfo associated with the gravitational wave-event GW170817 from binary neutron star merger proves that these events are id…
Resonant instability of axionic dark matter clumps
Z. Wang, L. Shao, L. -X. Li
Axion is a popular candidate for dark matter particles. Axionic dark matter may form Bose-Einstein condensate and may be gravitationally bound to form axion clumps. Under the prese…
Simulating Kilonovae in the ΛCDM Universe
Zhen Jiang, Jie Wang, Fenghui Zhang +6
Kilonovae are optical flashes produced in the aftermath of neutron star-neutron star mergers (NNMs) or neutron star-black hole mergers (NBMs). In this work, we use the Millennium S…
Line Expansion Opacity in Relativistically Expanding Media
Li-Xin Li
Spectral lines of heavy atomic elements in the ejecta of supernovae and neutron star mergers can have important contribution to the opacity of the ejecta matter even when the abund…
C2H N=1-0 and N2H+ J=1-0 observations of Planck Galactic cold clumps
Xunchuan Liu, Yuefang Wu, Chao Zhang +5
A survey of C2H N=1-0 and N2H+ J=1-0 toward Planck Galactic cold clumps (PGCCs) was performed using the Purple Mountain Observatory's 13.7 m telescope. C2H and N2H+ were chosen to…