Wave focusing by submerged islands and gravitational analogues

Model of thermal wave-front distortion in interferometric gravitational- wave detectors. I. Thermal focusing

We develop a steady-state analytical and numerical model of the optical response of power-recycled Fabry– Perot Michelson laser gravitational-wave detectors to nonlinear thermal focusing in optical substrates. We assume that the thermal distortions are small enough that we can represent all intracavity fields as linear combinations of basis functions derived from the eigenmodes of a Fabry–Perot...

Internal wave focusing by annular forcing

A linear theory is proposed for the focusing of internal waves generated by the oscillations of a horizontal annulus that is slender, namely of large aspect ratio, but otherwise arbitrary. The theory exploits the separation of scales and is applied to two configurations: a circular torus, and circular Gaussian topography at the ocean bottom. Both complete and partial annuli are considered. Focu...

Wave Reflection at Submerged Breakwaters

Several types of structures are used in Coastal Engineering with the aim of preventing shoreline erosion, such as groynes, detached breakwaters, submerged breakwaters, etc. Submerged breakwaters have the advantage of their minimal visual impact, which has made them ever more popular (Chang & Liou, 2007). When the incoming waves impinge on a submerged breakwater, a process of energy transformati...

Electromagnetic radiation induced by a gravitational wave

Gravitational Wave Scintillation by a Stellar Cluster

General Relativity predicts the existence of gravitational waves that propagate in the vacuum with the speed of light. Analogously to electromagnetism, it is expected that gravitational waves might also be scattered by intervening particles 1,2,3 and micro-lensed by compact objects along the line of sight 4,5,6. Moreover, gravitational waves will be diffracted as they pass through a distributio...