44 citations · 141 across the 10 of their papers we have counts for
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A short note on climbing gravity improbable: Superradiant ring fellowship of launching the high Lorentz-factor outflows/jets
Sandi Setiawan
The spin energy extraction from a rotating black hole by amplification of scalar waves inside superradiance resonance wedge cavity (ring), followed by jet formation via magnetic re…
A comparison of superradiance and negative-phase-velocity phenomenons in the ergosphere of a rotating black hole
Sandi Setiawan, Tom G. Mackay, Akhlesh Lakhtakia
The propagation of electromagnetic plane waves with negative phase velocity (NPV) in the ergosphere of a rotating black hole has recently been reported. A comparison of NPV propaga…
Electromagnetic waves with negative phase velocity in Schwarzschild-de Sitter spacetime
Tom G. Mackay, Akhlesh Lakhtakia, Sandi Setiawan
The propagation of electromagnetic plane waves with negative phase velocity (NPV) is considered in Schwarzschild-(anti-)de Sitter spacetime. It is demonstrated that NPV propagation…
Mapping of electromagnetic negative-phase-velocity propagation in the ergosphere of a rotating black hole
Tom G. Mackay, Akhlesh Lakhtakia, Sandi Setiawan
We report on the occurrence of negative-phase-velocity (NPV) planewave propagation in the ergosphere of a rotating black hole. By implementing the Kerr metric, it is demonstrated t…
Negative phase velocity of electromagnetic waves and the cosmological constant
Tom G. Mackay, Sandi Setiawan, Akhlesh Lakhtakia
Examining the propagation of electromagnetic plane waves with the wavevector directed in opposition to the time-averaged Poynting vector in cosmological spacetime with piecewise un…