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作品数：342被引量：308H指数：8
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Tidal force effects and bound orbits in null naked singularity spacetime
《Chinese Physics C》2024年第11期193-202,共10页Siddharth Madan Parth Bambhaniya 
Naked singularities form during the gravitational collapse of inhomogeneous matter clouds.The final nature of the singularity depends on the initial conditions of the matter properties and types of matter profiles.The...
关键词：black hole naked singularity tidal force bound orbits 
Null test for cosmic curvature using Gaussian process被引量：1
《Chinese Physics C》2023年第5期259-270,共12页武鹏举 祁景钊 张鑫 
Supported by the National SKA Program of China(2022SKA0110200,2022SKA0110203);the National Natural Science Foundation of China(11975072,11835009,11875102)。
The cosmic curvature Ω_(K,0),which determines the spatial geometry of the universe,is an important parameter in modern cosmology.Any deviation from Ω_(K,0)=0 would have a profound impact on the primordial inflation ...
关键词：cosmic curvature Gaussian process cosmological observations cosmological model-independent method null test 
Universal time delay in static spherically symmetric spacetimes for null and timelike signals
《Chinese Physics C》2021年第8期28-35,共8页Haotian Liu Junji Jia 
Supported by the National Natural Science Foundation of China(11504276);MOST China(2014GB109004)。
A perturbative method of computing the total travel time of both null and lightlike rays in arbitrary static spherically symmetric spacetimes in the weak field limit is proposed.The resultant total time takes a quasi-...
关键词：time delay static spherically symmetric gravitational lensing timelike geodesics 
Effect of null aether field on weak deflection angle of black holes
《Chinese Physics C》2020年第12期234-239,共6页A.Övgün İ.Sakallı J.Saavedra 
We study light rays in the static and spherically symmetric gravitational field of the null aether theory(NAT).To this end,we employ the Gauss-Bonnet theorem to compute the deflection angle formed by a NAT black hole ...
关键词：deflection of light Gauss-Bonnet theorem gravitational lensing black hole null aether theory 
Null geodesics,quasinormal modes,and thermodynamic phase transition for charged black holes in asymptotically flat and dS spacetimes
《Chinese Physics C》2020年第11期220-231,共12页Shao-Wen Wei Yu-Xiao Liu 
Supported by the National Natural Science Foundation of China(11675064,11875151,11522541);the Fundamental Research Funds for the Central Universities(lzujbky-2019-it21);Supported by the Chinese Scholarship Council(CSC)Scholarship(201806185016)to visit the University of Waterloo。
A numerical study has indicated that there exists a relation between the quasinormal modes and the Davies point for a black hole.In this paper,we analytically study this relation for charged Reissner-Nordstrom black h...
关键词：black holes phase transition photon sphere 
Evolving Hoava cosmological horizons
《Chinese Physics C》2016年第9期63-74,共12页Mohsen Fathi Morteza Mohseni 
Several sets of radially propagating null congruence generators are exploited in order to form 3-dimensional marginally trapped surfaces, referred to as black hole and cosmological apparent horizons in a Hoava univers...
关键词：Horava universe standard cosmology null congruence expansion black hole horizons white holes 
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