5 papers
Beyond-eikonal diffraction integral in gravitational lensing
Emma Bruyère, Giulia Cusin, Cyril Pitrou
We revisit the derivation of the diffraction integral, which is an approximate evaluation of the Kirchhoff integral, widely used in the literature for phenomenological applications…
Probing the Kinematic Dipole with LISA: an analytical treatment
Jacopo Fumagalli, Giulia Cusin, Cyril Pitrou +1
The motion of the Solar System with respect to the cosmic rest frame induces a kinematic dipole in the stochastic gravitational-wave background (GWB). Detecting this signal with sp…
CMB line-of-sight integrators for nearly-isotropic cosmological models
João G. Vicente, Thiago S. Pereira, Cyril Pitrou
Homogeneous and nearly-isotropic cosmological models are natural extensions of standard Friedmann cosmologies. Constraining their features is crucial, as any detection of their pro…
Gravitational lensing beyond the eikonal approximation
Emma Bruyère, Cyril Pitrou
Waves propagating through a gravitational potential exhibit wave-optics effects when their wavelength is not significantly smaller than the lensing scales. We study the propagation…
Resurrecting Gravitational Vector Modes and their Magnetogenesis
Ali Rida Khalife, Cyril Pitrou
We revisit the presence of primordial gravitational vector modes (V-modes) and their sourcing of primordial magnetic fields (PMF), i.e. magnetogenesis. As the adiabatic vector mode…