2.7k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR469 papers
- Université d'OrléansFR412 papers
- Observatoire de ParisFR236 papers
- Max Planck Institute for Radio AstronomyDE174 papers
- University of ManchesterGB160 papers
- Netherlands Institute for Radio AstronomyNL138 papers
- Université Paris Sciences et LettresFR135 papers
- Goddard Space Flight CenterUS121 papers
- Laboratoire d’études spatiales et d’instrumentation en astrophysiqueFR110 papers
- Observatoire Radioastronomique de NançayFR104 papers
- University of California, BerkeleyUS101 papers
- University of AmsterdamNL100 papers
23 papers · 1 filter
Generalised Aichelburg-Sexl and Self-Force for photons
Abedennour Dib, Aymeric Garnier, Alessandro Spallicci
We generalise the Aichelburg-Sexl Stress-Energy-Momentum tensor for massless particles to include motion with angular velocity, introducing tensorial spherical harmonics. Further,…
Search for gravitational wave signals from known pulsars in LIGO-Virgo O3 data using the 5n-vector ensemble method
Luca D'Onofrio, Rosario De Rosa, Cristiano Palomba +16
The 5n-vector ensemble method is a multiple test for the targeted search of continuous gravitational waves from an ensemble of known pulsars. This method can improve the detection…
Practical approaches to analyzing PTA data: Cosmic strings with six pulsars
Hippolyte Quelquejay Leclere, Pierre Auclair, Stanislav Babak +69
We search for a stochastic gravitational wave background (SGWB) generated by a network of cosmic strings using six millisecond pulsars from Data Release 2 (DR2) of the European Pul…
Searching for continuous Gravitational Waves in the second data release of the International Pulsar Timing Array
M. Falxa, S. Babak, P. T. Baker +123
The International Pulsar Timing Array 2nd data release is the combination of datasets from worldwide collaborations. In this study, we search for continuous waves: gravitational wa…
Robust parameter estimation from pulsar timing data
A. Samajdar, G. Shaifullah, A. Sesana +8
Recently, global pulsar timing arrays have released results from searching for a nano-Hertz gravitational wave background signal. Although there has not been any definite evidence…
Narrowband searches for continuous and long-duration transient gravitational waves from known pulsars in the LIGO-Virgo third observing run
The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1658
Isolated neutron stars that are asymmetric with respect to their spin axis are possible sources of detectable continuous gravitational waves. This paper presents a fully-coherent s…
The NANOGrav 12.5-year data set: Search for Non-Einsteinian Polarization Modes in theGravitational-Wave Background
Zaven Arzoumanian, Paul T. Baker, Harsha Blumer +68
We search NANOGrav's 12.5-year data set for evidence of a gravitational wave background (GWB) with all the spatial correlations allowed by general metric theories of gravity. We fi…
Addressing the cosmological tension by the Heisenberg uncertainty
Salvatore Capozziello, Micol Benetti, Alessandro D. A. M Spallicci
The uncertainty on measurements, given by the Heisenberg principle, is a quantum concept usually not taken into account in General Relativity. From a cosmological point of view, se…
Prospects for Fundamental Physics with LISA
Enrico Barausse, Emanuele Berti, Thomas Hertog +318
In this paper, which is of programmatic rather than quantitative nature, we aim to further delineate and sharpen the future potential of the LISA mission in the area of fundamental…
Motion of localized sources in general relativity: gravitational self-force from quasilocal conservation laws
Marius Oltean, Richard J. Epp, Carlos F. Sopuerta +2
An idealized "test" object in general relativity moves along a geodesic. However, if the object has a finite mass, this will create additional curvature in the spacetime, causing i…
First search for nontensorial gravitational waves from known pulsars
The LIGO Scientific Collaboration, the Virgo Collaboration, B. P. Abbott +1050
We present results from the first directed search for nontensorial gravitational waves. While general relativity allows for tensorial (plus and cross) modes only, a generic metric…
Comment on "Acceleration of particles to high energy via gravitational repulsion in the Schwarzschild field" [Astropart. Phys. 86 (2017) 18-20]
Alessandro D. A. M. Spallicci
Comments are due on a recent paper by McGruder III (2017) in which the author deals with the concept of gravitational repulsion in the context of the Schwarzschild-Droste solution.…
A frequency-domain implementation of the particle-without-particle approach to EMRIs
Marius Oltean, Carlos F. Sopuerta, Alessandro D. A. M. Spallicci
The gravitational waves emitted by binary systems with extreme mass ratios carry unique astrophysical information expected to be probed by the next generation of gravitational wave…
Entropy theorems in classical mechanics, general relativity, and the gravitational two-body problem
Marius Oltean, Luca Bonetti, Alessandro D. A. M. Spallicci +1
In classical Hamiltonian theories, entropy may be understood either as a statistical property of canonical systems, or as a mechanical property, that is, as a monotonic function of…
Gauge dependence and self-force from Galilean to Einsteinian free fall, compact stars falling into black holes, Hawking radiation and the Pisa tower at the general relativity centennial
Alessandro D. A. M. Spallicci, Maurice H. P. M. van Putten
(Short abstract). In Galilean physics, the universality of free fall implies an inertial frame, which in turns implies that the mass m of the falling body is omitted. Otherwise, an…
Indirect (source-free) integration method. II. Self-force consistent radial fall
P. Ritter, S. Aoudia, A. Spallicci +1
We apply our method of indirect integration, described in Part I, at fourth order, to the radial fall affected by the self-force. The Mode-Sum regularisation is performed in the Re…
Indirect (source-free) integration method. I. Wave-forms from geodesic generic orbits of EMRIs
P. Ritter, S. Aoudia, A. Spallicci +1
The Regge-Wheeler-Zerilli (RWZ) wave-equation describes Schwarzschild-Droste black hole perturbations. The source term contains a Dirac distribution and its derivative. We have pre…
A fully relativistic radial fall
Alessandro D. A. M. Spallicci, Patxi Ritter
Radial fall has historically played a momentous role. It is one of the most classical problems, the solutions of which represent the level of understanding of gravitation in a give…
Towards a self-consistent orbital evolution for EMRIs
Alessandro Spallicci, Patxi Ritter, Sylvain Jubertie +2
We intend to develop part of the theoretical tools needed for the detection of gravitational waves coming from the capture of a compact object, 1-100 solar masses, by a Supermassiv…
Intermediate behavior of Kerr tails
Anıl Zenginoğlu, Gaurav Khanna, Lior M. Burko
The numerical investigation of wave propagation in the asymptotic domain of Kerr spacetime has only recently been possible thanks to the construction of suitable hyperboloidal coor…
Self-forced gravitational waveforms for Extreme and Intermediate mass ratio inspirals
Kristen A. Lackeos, Lior M. Burko
We present the first orbit-integrated self force effects on the gravitational waveform for an I(E)MRI source. We consider the quasi-circular motion of a particle in the spacetime o…
On the complementarity of pulsar timing and space laser interferometry for the individual detection of supermassive black hole binaries
Alessandro D. A. M. Spallicci
Gravitational waves coming from Super Massive Black Hole Binaries (SMBHBs) are targeted by both Pulsar Timing Array (PTA) and Space Laser Interferometry (SLI). The possibility of a…
A source-free integration method for black hole perturbations and self-force computation: Radial fall
Sofiane Aoudia, Alessandro D. A. M. Spallicci
Perturbations of Schwarzschild-Droste black holes in the Regge-Wheeler gauge benefit from the availability of a wave equation and from the gauge invariance of the wave function, bu…