65 citations · 133 across the 9 of their papers we have counts for
16 papers · 1 filter
Probing Modified Gravity with Entanglement of Microspheres
Ankit Kumar, Yen-Kheng Lim, P. Arumugam +2
While a wide variety of astrophysical and cosmological phenomena suggest the presence of Dark Matter, all evidence remains via its gravitational effect on the known matter. As such…
Light-ring pairs from -discriminantal varieties
Yen-Kheng Lim, Mounir Nisse
When geodesic equations are formulated in terms of an effective potential , circular orbits are characterised by . In this paper we consider the case where …
Motion of charged particles around a magnetic black hole/topological star with a compact extra dimension
Yen-Kheng Lim
We study the motion of charged particles in a family of five-dimensional solutions describing either a black hole or topological star with a fifth compact dimension stabilised by a…
Null geodesics in the C-metric with cosmological constant
Yen-Kheng Lim
In this paper we study the motion of photons or massless particles in the C-metric with cosmological constant. The Hamilton--Jacobi equations are known to be completely separable,…
Hypocycloid motion in the Melvin magnetic universe
Yen-Kheng Lim
The trajectory of a charged test particle in the Melvin magnetic universe is shown to take the form of hypocycloids in two different regimes, first of which is the class of perturb…
Orbital mechanics and quasiperiodic oscillation resonances of black holes in Einstein-Æther theory
Mustapha Azreg-Aïnou, Zihang Chen, Bojun Deng +4
In this paper, we study the motion of test particles around two exact charged black-hole solutions in Einstein-Æther theory. Specifically, we first consider the quasi-periodic osci…