6 papers
Relativistic Elastic Response to Gravitational Waves: Explicit Solutions for a Rectangular Plate
José Natário, Filipe Nazaré
We study the interaction between gravitational waves and elastic bodies within the framework of relativistic elasticity. Starting from the Lagrangian formulation of relativistic el…
Resonances in binary extreme mass ratio inspirals
João S. Santos, Vitor Cardoso, Alexandru Lupsasca +2
Stellar-mass binaries evolving in the vicinity of supermassive black holes (SMBHs) may be common in the universe, either in active galactic nuclei or in other astrophysical environ…
An exact solution describing a scalar counterpart to the Schwarzschild-Melvin Universe
Vitor Cardoso, José Natário
The Schwarzschild-Melvin spacetime is an exact solution of the Einstein electrovacuum equations describing a black hole immersed in a magnetic field which is asymptotically aligned…
Elastic rigid rod in an expanding universe
Simão Correia, José Natário, Jorge Drumond Silva
We study the motion of a rigid elastic rod, initially set in its relaxed state along a spacelike geodesic, in an expanding Friedmann-Lemaître-Robertson-Walker universe. This leads…
Gravitational waves from b-EMRIs: Doppler shift and beaming, resonant excitation, helicity oscillations and self-lensing
João S. Santos, Vitor Cardoso, José Natário +1
We study gravitational waves from a stellar-mass binary orbiting a spinning supermassive black hole, a system referred to as a binary extreme mass ratio inspiral (b-EMRI). We use D…
Floating orbits and energy extraction from magnetized Kerr black holes
João S. Santos, VÃtor Cardoso, José Natário
We study electromagnetic radiation reaction on a charged particle around a weakly magnetized Kerr black hole. We solve numerically the Teukolsky equation to find energy fluxes in e…