63 citations · 493 across the 42 of their papers we have counts for
44 papers
Photon surfaces extensions for dynamical gravitational collapse
Roberto Giambò, Camilla Lucamarini
The equations for the photon surface in spherical symmetry are worked out, starting from arXiv:gr-qc/0005050, in the most general dynamical setting. We show that the condition for…
Bondi accretion disk luminosity around neutral and charged Simpson-Visser spacetimes
Serena Gambino, Roberto Giambò, Orlando Luongo
We investigate relativistic Bondi accretion in the Simpson-Visser spacetime, which, via a single parameter , interpolates between the Schwarzschild, regular black hole, extre…
Generalizing the relativistic precession model of quasi-periodic oscillations through anharmonic corrections
Roberto Giambò, Orlando Luongo, Marco Muccino +1
We critically reanalyze the relativistic precession model of quasi-periodic oscillations, exploring its natural extension beyond the standard harmonic approximation. To do so, we s…
A note on the regularity and the existence of Riemannian splines
Dario Corona, Roberto Giambò, Paolo Piccione
In this paper, we present a comprehensive proof concerning the regularity of critical points for the spline energy functional on Riemannian manifolds, even for the general higher-o…
Global models of collapsing scalar field: endstate
Dario Corona, Roberto Giambò
The study of dynamic singularity formation in spacetime, focusing on scalar field collapse models, is analysed. We revisit key findings regarding open spatial topologies, concentra…
Motion of test particles in quasi anti-de Sitter regular black holes
Dario Corona, Roberto Giambò, Orlando Luongo
We explore the characteristics of two novel regular spacetimes that exhibit a non-zero vacuum energy term, under the form of a (quasi) anti-de Sitter phase. Specifically, the first…