5 papers
How it cools? Studying the heat flow out of a semi-infinite slab in welding: An analytical approach
Fawzi Aly, Alex Kitt, Luke Mohr
Additive manufacturing and welding processes are highly sensitive to heat dissipation, where improper thermal management leads to residual stresses, distortions, and cracking. Exis…
Modified Teukolsky formalism: Null testing and numerical benchmarking
Fawzi Aly, Mahmoud A. Mansour, Luis Lehner +3
Next-generation gravitational-wave detectors will make black-hole ringdown an increasingly sensitive probe of small departures from General Relativity in the strong-field regime. T…
Coupling between gravitational and electromagnetic perturbations on Kerr Spacetime
Fawzi Aly, Dejan Stojkovic
We extend our previous Schwarzschild metric-based studies of gravitational--electromagnetic (GEM) coupling to rotating black holes by working directly in a curvature-based Newman--…
More Nonlinearities? II. A Short Guide of First- and Second-Order Electromagnetic Perturbations in the Schwarzschild Background
Fawzi Aly, Mahmoud A. Mansour, Dejan Stojkovic
We study second-order electromagnetic perturbations in the Schwarzschild background and derive the effective source terms for Regge-Wheeler equation which are quadratic in first-or…
More Nonlinearities? Electromagnetic and Gravitational Mode Mixing in NSBH Mergers
Fawzi Aly, Mahmoud A. Mansour, Dejan Stojkovic
We investigate the possibility of electromagnetic fields leaving imprints on gravitational wave (GW) signals from Neutron Star-Black hole (NSBH) mergers, specifically in the contex…