supported by the National Natural Science Foundation of China under Grant No.11675143;the National Key Research and Development Program of China under Grant No.2020YFC2201503。
In this paper we consider a static spherically symmetric black hole(BH)embedded in a Dehnen-(1,4,0)-type dark matter(DM)halo in the presence of a cloud string.We examine and present data on how the core density of the...
Project supported by the National Natural Science Foundation of China(Grant No.42230207);the Fundamental Research Funds for the Central Universities,China University of Geosciences(Wuhan)(Grant No.G1323523064)。
We apply the WKB approximation method,matrix method,and finite difference method to study the gravitational quasi-normal modes of charged spherically symmetric black holes surrounded by quintessence fluid in Rastall g...
Since soon after the discovery of radio pulsars in 1968,their scintillation due to multi-path scattering in the interstellar medium(ISM)emerged as a useful tool in studying the ISM.For example,a recent study with the ...