120 citations · 679 across the 26 of their papers we have counts for
10 papers · 1 filter
Horizon flux-balance laws in the multiscale perturbation
Ali Seraj
Black-hole event horizons obey a set of evolution equations governing their intrinsic and extrinsic geometry. We study these equations in a \textit{two-timescale} perturbative expa…
Memory of Robinson-Trautman waves
Glenn Barnich, Ali Seraj
The memory effect for Robinson-Trautman waves is explicitly worked out. In a first step, we construct the combined frame rotation and coordinate transformation in which Robinson-Tr…
Gravitational Holonomy in Sagnac Interferometry
Reza Javadinezhad, Ali Seraj
We analyze the influence of gravitational waves on a Sagnac interferometer formed by the interference of two counter-propagating beams traversing a closed spatial loop. In addition…
Gravitational memory effects in Tachyon gravity
Pouneh Safarzadeh Ilkhchi, Amin Rezaei Akbarieh, Ali Seraj
In this paper, we explore how a massless Tachyon field, when non-minimally coupled to gravity, affects gravitational memory, soft theorems, and symmetries near null infinity. We se…
Gyroscopic Gravitational Memory from quasi-circular binary systems
Guillaume Faye, Ali Seraj
Gravitational waves cause freely falling spinning objects to precess, resulting in a net orientation change called gyroscopic memory. In this paper, we will consider isolated gravi…
Multipole expansion of gravitational waves: memory effects and Bondi aspects
Luc Blanchet, Geoffrey Compère, Guillaume Faye +2
In our previous work, we proposed an algorithm to transform the metric of an isolated matter source in the multipolar post-Minkowskian approximation in harmonic (de Donder) gauge t…