63 citations · 218 across the 17 of their papers we have counts for
13 papers · 1 filter
Separability of the motion of spinning test particles in curved space-time
Vojtěch Witzany, Viktor Skoupý
Solving for the motion of spinning test particles in curved spacetimes is important for modeling gravitational-wave inspirals of spinning compact binaries. We build a Hamiltonian f…
Toward relativistic inspirals into black holes surrounded by matter
Lukáš Polcar, Vojtěch Witzany
Extreme mass ratio inspirals, compact objects spiraling into massive black holes, represent key sources for future space-based gravitational-wave detectors such as LISA. The inspir…
Spherical inspirals of spinning bodies into Kerr black holes
Viktor Skoupý, Gabriel Andres Piovano, Vojtěch Witzany
Extreme mass-ratio inspirals (EMRIs), consisting of a stellar-mass compact object spiraling into a massive black hole, are key sources for future space-based gravitational wave obs…
Spinning particles near Kerr black holes: Orbits and gravitational-wave fluxes through the Hamilton-Jacobi formalism
Gabriel Andres Piovano, Christiana Pantelidou, Jake Mac Uilliam +1
Extreme mass-ratio inspirals are among the key sources of gravitational waves for the Laser Interferometer Space Antenna space-based gravitational-wave detector. Achieving sufficie…
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…
Analytic solutions for the motion of spinning particles near spherically symmetric black holes and exotic compact objects
Vojtěch Witzany, Gabriel Andres Piovano
Rapidly rotating bodies moving in curved space-time experience the so-called spin-curvature force, which becomes important for the motion of compact objects in gravitational-wave i…
Action-angle coordinates for black-hole geodesics I: Spherically symmetric and Schwarzschild
Vojtěch Witzany
Action-angle coordinates are a tool commonly used in celestial mechanics to systematically parametrize and store general solutions of the equations of motion of astrophysical bodie…
Einstein gravity as a theory with a SL(2,C) connection double copy
Vojtěch Witzany
Results ranging from Ashtekar variables to the perturbative Bern-Carrasco-Johansson (BCJ) double copy suggest a deep relation between Yang-Mills theory and Einstein gravity. I exam…
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…
Spin-perturbed orbits near black holes
Vojtěch Witzany
Inspirals of rotating stellar-mass compact objects into massive black holes are influenced by the spin-curvature coupling, which drives the compact body away from geodesic motion d…
Hamilton-Jacobi equation for spinning particles near black holes
Vojtěch Witzany
A compact stellar-mass object inspiralling onto a massive black hole deviates from geodesic motion due to radiation-reaction forces as well as finite-size effects. Such post-geodes…
Recurrence analysis of spinning particles in the Schwarzschild background
Ondřej Zelenka, Georgios Lukes-Gerakopoulos, Vojtěch Witzany
In this work the dynamics of a spinning particle moving in the Schwarzschild background is studied. In particular, the methods of Poincaré section and recurrence analysis are emplo…
Exploiting the hidden symmetry of spinning black holes: conservation laws and numerical tests
Vojtěch Witzany
The Kerr black hole is stationary and axisymmetric, which leads to conservation of energy and azimuthal angular momentum along the orbits of free test particles in its vicinity, bu…