67 citations · 230 across the 8 of their papers we have counts for
8 papers
Quasinormal modes and their excitation beyond general relativity. II: isospectrality loss in gravitational waveforms
Hector O. Silva, Giovanni Tambalo, Kostas Glampedakis +1
We continue our series of papers where we study the quasinormal modes, and their excitation, of black holes in the simplest beyond general relativity model in which first-principle…
To the Problem of Cosmic Expansion in Massive Gravity
Lavinia Heisenberg, Alessandro Longo, Giovanni Tambalo +1
We consider evolving, spatially flat isotropic and homogeneous (FLRW) cosmologies in ghost-free (dRGT) massive gravity. In this theory, no dynamical flat FLRW background exists if…
GLoW: novel methods for wave-optics phenomena in gravitational lensing
Hector Villarrubia-Rojo, Stefano Savastano, Miguel Zumalacárregui +4
Wave-optics phenomena in gravitational lensing occur when the signal's wavelength is commensurate to the gravitational radius of the lens. Although potentially detectable in lensed…
Quasinormal modes and their excitation beyond general relativity
Hector O. Silva, Giovanni Tambalo, Kostas Glampedakis +2
The response of black holes to small perturbations is known to be partially described by a superposition of quasinormal modes. Despite their importance to enable strong-field tests…
Gravitational radiation from a particle plunging into a Schwarzschild black hole: frequency-domain and semirelativistic analyses
Hector O. Silva, Giovanni Tambalo, Kostas Glampedakis +1
We revisit the classic problem of gravitational wave emission by a test particle plunging into a Schwarzschild black hole both in the frequency-domain Regge-Wheeler-Zerilli formali…
Weakly Lensed Gravitational Waves: Probing Cosmic Structures with Wave-Optics Features
Stefano Savastano, Giovanni Tambalo, Hector Villarrubia-Rojo +1
Every signal propagating through the universe is at least weakly lensed by the intervening gravitational field. In some situations, wave-optics phenomena (diffraction, interference…
Gravitational wave lensing as a probe of halo properties and dark matter
Giovanni Tambalo, Miguel Zumalacárregui, Liang Dai +1
Just like light, gravitational waves (GWs) are deflected and magnified by gravitational fields as they propagate through the Universe. However, their low frequency, phase coherence…
Lensing of gravitational waves: efficient wave-optics methods and validation with symmetric lenses
Giovanni Tambalo, Miguel Zumalacárregui, Liang Dai +1
Gravitational wave (GW) astronomy offers the potential to probe the wave-optics regime of gravitational lensing. Wave optics (WO) effects are relevant at low frequencies, when the…