Description
Chair: Jack Franklin
Abstract:
Understanding and detecting gravitational waves is key to testing new theories.
Gravitational wave calculations from black holes all assume the background spacetime is flat.
Understanding these in a de Sitter background is imperative, and has a two-fold effect:
- It expands the reach of future gravity waves observations to the earliest universe (inflation) and also the largest...
We generalise Phinney's 'practical theorem' to account for modified graviton dispersion relations motivated by certain cosmological scenarios. Focusing on specific examples, we show how such modifications can induce characteristic localised distortions, bumps, in the frequency profile of the stochastic gravitational wave background emitted from distant binary sources. We concentrate on...
The possibility of detecting ultra-heavy dark matter often poses a significant challenge due to the incredibly suppressed flux. As a result, even models with high cross sections with respect to the weak scale WIMPs remain unconstrained. In this talk, we show the potential for future large scale acoustic detectors in the ocean initially proposed for ultra high energy neutrino detection could...
