38 citations · 55 across the 8 of their papers we have counts for
7 papers · 1 filter
A binary black hole metric approximation from inspiral to merger
Luciano Combi, Sean M. Ressler
We present a semi-analytical binary black hole (BBH) metric approximation that models the entire evolution of the system from inspiral to merger. The metric is constructed as a boo…
Superposed metric for spinning black hole binaries approaching merger
Luciano Combi, Federico G. Lopez Armengol, Manuela Campanelli +4
We construct an approximate metric that represents the spacetime of spinning binary black holes (BBH) approaching merger. We build the metric as an analytical superposition of two…
Relativistic rigid systems and the cosmic expansion
Luciano Combi, Gustavo E. Romero
We analyze the necessary conditions for a body to remain rigid in an expanding cosmological Universe. First, we establish the main theorems and definitions for having a rigid body…
Electromagnetic fields and charges in expanding universes
Luciano Combi, Gustavo E. Romero
We analyze the properties of the electric and magnetic fields in different reference frames within a cosmological background space-time. First, we investigate the conformal propert…
A note on geodesics in inhomogeneous expanding spacetimes
Daniela Pérez, Gustavo E. Romero, Luciano E. Combi +1
There are several solutions of Einstein field equations that describe an inhomogeneity in an expanding universe. Among these solutions, the McVittie metric and its generalizations…
Gravitational energy and radiation of a charged black hole
Luciano Combi, Gustavo E. Romero
We analyze the energy configuration of a charged black hole in the Teleparallel Framework of General Relativity. We obtain the energy-momentum tensor of the gravitational field in…