243 citations · 3k across the 96 of their papers we have counts for
98 papers
Evolution of baryon density perturbation in a relativistic MOND model based on Lorentz-violating vector field
Jai-chan Hwang, Hyerim Noh
A candidate for relativistic MOND with successful cosmology was proposed recently by using a Lorentz-violating vector field in Einstein's gravity. We show that the dynamic nature o…
Massive-photon electrodynamics and MHD in curved spacetime and cosmology
Jai-chan Hwang, Hyerim Noh
We study a massive-photon electrodynamics and magnetohydrodynamics (MHD) in the curved spacetime of Einstein's gravity. We consider a Proca-type photon mass and present equations i…
Cosmological perturbations of a relativistic MOND theory
Jai-chan Hwang, Hyerim Noh
A relativistic MOND theory, promising in reproducing cosmology as well as the MOND phenomenology in the low acceleration regime, was recently proposed. We present the post-Newtonia…
Graviton-photon conversions in Euler-Heisenberg nonlinear electrodynamics
Jai-chan Hwang, Hyerim Noh
We study graviton-photon conversions in an environment of the uniform and constant magnetic field considering Euler-Köckel-Heisenberg-type nonlinear corrections in electrodynamics.…
On gravity as a medium property in Maxwell equations
Jai-chan Hwang, Hyerim Noh
The effect of gravity in Maxwell's equations is often treated as a medium property. The commonly used formulation is based on managing Maxwell's equations in exactly the same form…
Pulsar Timing Array Signature from Oscillating Metric Perturbations due to Ultra-light Axion
Jai-chan Hwang, Donghui Jeong, Hyerim Noh +1
A coherently oscillating ultra-light axion can behave as dark matter. In particular, its coherently oscillating pressure perturbations can source an oscillating scalar metric pertu…