115 citations · 1.6k across the 58 of their papers we have counts for
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Spinning charged test particle dynamics around a Schwarzschild black hole embedded in a homogeneous magnetic field
Misbah Shahzadi, Martin Kolos, Ondrej Zelenka +1
We study the dynamics of spinning charged test particles orbiting a Schwarzschild black hole immersed in a test uniform magnetic field. This setup provides a simple but physically…
Extreme mass ratio inspirals into black holes surrounded by matter: Resonance crossings
Michal Stratený, Georgios Lukes-Gerakopoulos, Ondřej Zelenka
The forthcoming space-based gravitational-wave observatory Laser Interferometer Space Antenna (LISA) should enable the detection of Extreme Mass Ratio Inspirals (EMRIs), in which a…
Circular equatorial orbits of extended bodies with spin-induced quadrupole around a Kerr black hole: Comparing spin-supplementary conditions
Misbah Shahzadi, Georgios Lukes-Gerakopoulos, Martin Kološ
The worldline of an extended body in curved spacetime can be described by the Mathisson-Papapetrou-Dixon equations when its centroid, i.e., its center of mass, is fixed by a spin s…
The Science of the Einstein Telescope
Adrian Abac, Raul Abramo, Simone Albanesi +485
Einstein Telescope (ET) is the European project for a gravitational-wave (GW) observatory of third-generation. In this paper we present a comprehensive discussion of its science ob…
Combining Machine Learning with Recurrence Analysis for resonance detection
Ondřej Zelenka, Ondřej Kopáček, Georgios Lukes-Gerakopoulos
The width of a resonance in a nearly integrable system, i.e. in a non-integrable system where chaotic motion is still not prominent, can tell us how a perturbation parameter is dri…
Comparing effective-one-body and Mathisson-Papapetrou-Dixon results for a spinning test particle on circular equatorial orbits around a Kerr black hole
Angelica Albertini, Viktor Skoupý, Georgios Lukes-Gerakopoulos +1
We consider a spinning test particle around a rotating black hole and compare the Mathisson-Papapetrou-Dixon (MPD) formalism under the Tulczyjew-Dixon spin supplementary condition…
Comparing second-order gravitational self-force and effective-one-body waveforms from inspiralling, quasi-circular black hole binaries with a non-spinning primary and a spinning secondary
Angelica Albertini, Alessandro Nagar, Josh Mathews +1
We present the first comparison of waveforms evaluated using the effective-one-body (EOB) approach and gravitational self-force (GSF) theory for inspiralling black hole binaries wi…
Can extended bodies follow geodesic trajectories?
Georgios Lukes-Gerakopoulos, Sajal Mukherjee
We provide an extension of the analysis on whether an extended test body can follow a geodesic trajectory given by Mukherjee, S., Lukes-Gerakopoulos, G. and Nayak, R. K. (2022), Ex…
Growth of orbital resonances around a black hole surrounded by matter
Michal Stratený, Georgios Lukes-Gerakopoulos
This work studies the dynamics of geodesic motion within a curved spacetime around a Schwarzschild black hole, perturbed by a gravitational field of a far axisymmetric distribution…
Detectability of stochastic gravitational wave background from weakly hyperbolic encounters
Morteza Kerachian, Sajal Mukherjee, Georgios Lukes-Gerakopoulos +1
We compute the stochastic gravitational wave (GW) background generated by black hole-black hole (BH-BH) hyperbolic encounters with eccentricities close to one and compare them with…
Waveform Modelling for the Laser Interferometer Space Antenna
LISA Consortium Waveform Working Group, Niayesh Afshordi, Sarp Akçay +144
LISA, the Laser Interferometer Space Antenna, will usher in a new era in gravitational-wave astronomy. As the first anticipated space-based gravitational-wave detector, it will exp…
Extended bodies with spin induced quadrupoles on circular equatorial orbits in Kerr spacetime
Iason Timogiannis, Georgios Lukes-Gerakopoulos, Theocharis A. Apostolatos
This work discusses the motion of extended test bodies as described by the Mathisson-Papapetrou-Dixon (MPD) equations in the pole-dipole-quadrupole approximation. We focus on the c…
Asymptotic gravitational-wave fluxes from a spinning test body on generic orbits around a Kerr black hole
Viktor Skoupý, Georgios Lukes-Gerakopoulos, Lisa V. Drummond +1
This work provides gravitational wave energy and angular momentum asymptotic fluxes from a spinning body moving on generic orbits in a Kerr spacetime up to linear in spin approxima…
Action-Angle formalism for extreme mass ratio inspirals in Kerr spacetime
Morteza Kerachian, Lukáš Polcar, Viktor Skoupý +2
We introduce an action-angle formalism for bounded geodesic motion in Kerr black hole spacetime using canonical perturbation theory. Namely, we employ a Lie series technique to pro…
The Laser Interferometer Space Antenna mission in Greece White Paper
Nikolaos Karnesis, Nikolaos Stergioulas, Georgios Pappas +18
The Laser Interferometer Space Antenna (LISA) mission, scheduled for launch in the mid-2030s, is a gravitational wave observatory in space designed to detect sources emitting in th…
Spinning test body orbiting around a Kerr black hole: Comparing Spin Supplementary Conditions for Circular Equatorial Orbits
Iason Timogiannis, Georgios Lukes-Gerakopoulos, Theocharis A. Apostolatos
The worldline of a spinning test body moving in curved spacetime can be provided by the Mathisson-Papapetrou-Dixon (MPD) equations when its centroid, i.e. its center of mass, is fi…
Resonance crossing of a charged body in a magnetized Kerr background: an analogue of extreme mass ratio inspiral
Sajal Mukherjee, Ondrej Kopacek, Georgios Lukes-Gerakopoulos
We investigate resonance crossings of a charged body moving around a Kerr black hole immersed in an external homogeneous magnetic field. This system can serve as an electromagnetic…
Extreme mass ratio inspirals into black holes surrounded by matter
Lukáš Polcar, Georgios Lukes-Gerakopoulos, Vojtěch Witzany
Inspirals of stellar-mass compact objects into massive black holes, known as extreme mass ratio inspirals (EMRIs), are one of the key targets for upcoming space-based gravitational…
Adiabatic equatorial inspirals of a spinning body into a Kerr black hole
Viktor Skoupý, Georgios Lukes-Gerakopoulos
The detection of gravitational waves from Extreme mass Ratio Inspirals (EMRIs) by the future space-based gravitational-wave detectors demands the generation of accurate enough wave…
Spinning test body orbiting around a Schwarzschild black hole: Comparing Spin Supplementary Conditions for Circular Equatorial Orbits
Iason Timogiannis, Georgios Lukes-Gerakopoulos, Theocharis A. Apostolatos
The Mathisson-Papapetrou-Dixon (MPD) equations describe the motion of an extended test body in general relativity. This system of equations, though, is underdetermined and has to b…
Non-linear effects in EMRI dynamics and their imprints on gravitational waves
Georgios Lukes-Gerakopoulos, Vojtěch Witzany
The largest part of any gravitational-wave inspiral of a compact binary can be understood as a slow, adiabatic drift between the trajectories of a certain referential conservative…
Spinning test body orbiting around a Kerr black hole: Eccentric equatorial orbits and their asymptotic gravitational-wave fluxes
Viktor Skoupý, Georgios Lukes-Gerakopoulos
We use the frequency and time domain Teukolsky formalism to calculate gravitational-wave fluxes from a spinning body on a bound eccentric equatorial orbit around a Kerr black hole.…
Dynamical analysis approaches in spatially curved FRW spacetimes
M. Kerachian, G. Acquaviva, G. Lukes-Gerakopoulos
In this article, we summarize two agnostic approaches in the framework of spatially curved Friedmann-Robertson-Walker (FRW) cosmologies discussed in detail in (Kerachian et al., 20…
Dynamics of classes of barotropic fluids in spatially curved FRW spacetimes
Morteza Kerachian, Giovanni Acquaviva, Georgios Lukes-Gerakopoulos
In this article we perform dynamical analysis of a broad class of barotropic fluids in the spatially curved Friedmann-Robertson-Walker (FRW) spacetime background without considerin…