618 citations · 935 across the 19 of their papers we have counts for
20 papers
Gaia Data Release 1. Testing the parallaxes with local Cepheids and RR Lyrae stars
Gaia Collaboration, G. Clementini, L. Eyer +588
Parallaxes for 331 classical Cepheids, 31 Type II Cepheids and 364 RR Lyrae stars in common between Gaia and the Hipparcos and Tycho-2 catalogues are published in Gaia Data Release…
Gaia Data Release 1: Astrometry - one billion positions, two million proper motions and parallaxes
L. Lindegren, U. Lammers, U. Bastian +80
Gaia Data Release 1 (Gaia DR1) contains astrometric results for more than 1 billion stars brighter than magnitude 20.7 based on observations collected by the Gaia satellite during…
The Ray Tracing Analytical Solution within the RAMOD framework. The case of a Gaia-like observer
Mariateresa Crosta, Alberto Vecchiato, Fernando de Felice +1
This paper presents the analytical solution of the inverse ray tracing problem for photons emitted by a star and collected by an observer located in the gravitational field of the…
Observer-dependent optical properties of stationary axisymmetric spacetimes
Donato Bini, Fernando de Felice, Andrea Geralico
The world lines of null particles admit arbitrary parametrizations. In the presence of a family of observers one may introduce along a null world line an extension of the so-called…
The Erez-Rosen metric and the role of the quadrupole on light propagation
Donato Bini, Mariateresa Crosta, Fernando de Felice +2
The gravitational field of a static body with quadrupole moment is described by an exact solution found by Erez and Rosen. Here we investigate the role of the quadrupole in the mot…
Accelerated orbits in black hole fields: the static case
Donato Bini, Fernando de Felice, Andrea Geralico
We study non-geodesic orbits of test particles endowed with a structure, assuming the Schwarzschild spacetime as background. We develop a formalism which allows one to recognize th…
Strains and axial outflows in the field of a rotating black hole
Donato Bini, Fernando de Felice, Andrea Geralico
We study the behaviour of an initially spherical bunch of accelerated particles emitted along trajectories parallel to the symmetry axis of a rotating black hole. We find that, und…
Strains in General Relativity
Donato Bini, Fernando de Felice, Andrea Geralico
The definition of relative accelerations and strains among a set of comoving particles is studied in connection with the geometric properties of the frame adapted to a "fiducial ob…
Spin precession along circular orbits in the Kerr spacetime: the Frenet-Serret description
Donato Bini, Fernando de Felice, Andrea Geralico +1
The circular motion of spinning massive test particles in the equatorial plane of a rotating black hole is investigated in the case in which the components of the spin tensor are a…
Spinning test particles in Weyl spacetimes
Donato Bini, Fernando de Felice, Andrea Geralico +1
The motion of spinning test particles along circular orbits in static vacuum spacetimes belonging to the Weyl class is discussed. Spin alignment and coupling with background parame…
Charged spinning particles on circular orbits in the Reissner-Nordström spacetime
Donato Bini, Fernando de Felice, Andrea Geralico
The behaviour of charged spinning test particles moving along circular orbits in the equatorial plane of the Reissner-Nordström spacetime is studied in the framework of the Dixon-S…
Naked Singularities, Cosmic Time Machines and Impulsive Events
F. de Felice
Continued gravitational collapse gives rise to curvature singularities. If a curvature singularity is globally naked then the space-time may be causally future ill-behaved admittin…
Spin precession in the Schwarzschild spacetime: circular orbits
Donato Bini, Fernando de Felice, Andrea Geralico +1
We study the behavior of nonzero rest mass spinning test particles moving along circular orbits in the Schwarzschild spacetime in the case in which the components of the spin tenso…
Spinning test particles and clock effect in Kerr spacetime
Donato Bini, Fernando de Felice, Andrea Geralico
We study the motion of spinning test particles in Kerr spacetime using the Mathisson-Papapetrou equations; we impose different supplementary conditions among the well known Corinal…
Spinning test particles and clock effect in Schwarzschild spacetime
Donato Bini, Fernando de Felice, Andrea Geralico
We study the behaviour of spinning test particles in the Schwarzschild spacetime. Using Mathisson-Papapetrou equations of motion we confine our attention to spatially circular orbi…
Some aspects of Relativistic Astrometry from within the Solar System
Maria Teresa Crosta, Alberto Vecchiato, Fernando de Felice +2
In this article we outline the structure of a general relativistic astrometric model which has been developed to deduce the position and proper motion of stars from 1-microarcsecon…
Jet dynamics in black hole physics: acceleration during subparsec collimation
F. de Felice, O. Zanotti
We study the processes of particle acceleration which take place in the field of a rotating black hole as part of a mechanism of formation of galactic jets within the first parsec…
A method to determine the parameters of black holes in AGNs and galactic X-ray sources with periodic modulation of variability
O. Semerak, F. de Felice, V. Karas
We propose a simple and unambiguous way to deduce the parameters of black holes which may reside in AGNs and some types of X-ray binaries. The black-hole mass and angular momentum…
Coalescing binary systems of compact objects: Dynamics of angular momenta
Carlo Del Noce, Giovanni Preti, Fernando de Felice
The end state of a coalescing binary of compact objects depends strongly on the final total mass M and angular momentum J. Since gravitational radiation emission causes a slow evol…
An Anisotropic Wormhole:TUNNELLING in Time and Space
M. Cavaglia' V. de Alfaro, F. de Felice
We discuss the structure of a gravitational euclidean instanton obtained through coupling of gravity to electromagnetism. Its topology at fixed is . This euclide…