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16 papers · 2 filters
Deflection of charged massive particles by a four-dimensional charged Einstein-Gauss-Bonnet black hole
Zonghai Li, Yujie Duan, Junji Jia
Based on the Jacobi metric method, this paper studies the deflection of a charged massive particle by a novel four-dimensional charged Einstein-Gauss-Bonnet black hole. We focus on…
Perturbative deflection angle, gravitational lensing in the strong field limit and the black hole shadow
Junji Jia, Ke Huang
A perturbative method to compute the deflection angle of both timelike and null rays in arbitrary static and spherically symmetric spacetimes in the strong field limit is proposed.…
Cosmological consequences of a scalar field with oscillating equation of state. II. Oscillating scaling and chaotic accelerating solutions
S. X. Tian
Multiacceleration scenario can be used to solve the cosmological coincidence problem. In this paper, after considering the early radiation era, we revisit the cosmological dynamics…
Lensing rates of gravitational wave signals displaying beat patterns detectable by DECIGO and B-DECIGO
Shaoqi Hou, Pengbo Li, Hai Yu +4
The coherent nature of gravitational wave emanating from a compact binary system makes it possible to detect some interference patterns in two (or more) signals registered simultan…
"Conserved charges" of the Bondi-Metzner-Sachs algebra in the Brans-Dicke theory
Shaoqi Hou, Zong-Hong Zhu
The asymptotic symmetries in Brans-Dicke theory are analyzed using Penrose's conformal completion method, which is independent of the coordinate system used. These symmetries indee…
Circular orbit of a particle and weak gravitational lensing
Zonghai Li, Guodong Zhang, Ali Övgün
The purpose of this paper is twofold. First, we introduce a geometric approach to study the circular orbit of a particle in static and spherically symmetric spacetime based on Jaco…