172 citations · 343 across the 26 of their papers we have counts for
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gr-qc2026
The formalism of energy conservation during particle decay in the Kerr spacetime
Shurui Zhang, Remo Ruffini
We derive a compact, covariant expression for the relative Lorentz factor of two particles in curved spacetime and apply it to particle decay in Kerr spacetime. This allows us to s…
gr-qc2024★ 1 cited
On the single versus the repetitive Penrose process in a Kerr black hole
Remo Ruffini, Mikalai Prakapenia, Hernando Quevedo +1
Extracting the rotational energy from a Kerr black hole (BH) is one of the crucial topics in relativistic astrophysics. Here, we give special attention to the Penrose ballistic pro…
gr-qc2000
Darboux cosmological fluids in comoving time
R. Klippert, H. C. Rosu, R. Ruffini
The barotropic indices and the corresponding FRW scale factors of the so-called Darboux cosmological fluids are presented in the comoving time axis, which is the natural one for th…