Gravitational Wave Afterglow of Stellar Collapse in Massive Scalar- - PowerPoint PPT Presentation

Mapping the GW Sky: A New Probe of Large-Scale Structure Alexander C. Jenkins , King’s College London Gravitational Wave Afterglow of Stellar Collapse in Massive Scalar- Tensor Gravity Ulrich Sperhake GW signals are tracers of the galaxy distribution We simulate the nonlinear stochastic GW sky We demonstrate the problem of shot noise We develop an optimal method for estimating the angular power spectrum Come see the poster! alexander.jenkins@kcl.ac.uk Kavli-RISE summer school, DAMTP, Cambridge 23 September 2019 1 / 1

Moving black holes arXiv:1906.10140 Accepted in PRD energy extraction, absorption cross-section Gravitational Wave Afterglow of and the ring of fire Stellar Collapse in Massive Scalar- Rodrigo Vicente (CENTRA - IST) [in collaboration with Vítor Cardoso ] Tensor Gravity Ulrich Sperhake BH Kavli-RISE Summer School on Gravitational Waves, Cambridge, UK

Stochastic Cosmological Background Study with 3G Gravitational Wave Detectors : Probing the Very Early Universe Gravitational Wave Afterglow of • A GW stochastic background may be next class signal detected. Stellar Collapse in Massive Scalar- • It would be a statistical detection whose confidence level will grow with the observation time. Tensor Gravity • To detect a primordial or early universe GW signal, we have to reduce the foreground generated by 10 0 − 10 2 mergers (NS-NS, BH- • Methods Required are : Ulrich Sperhake • Parameter Estimation of detected BH, NS-BH) in the universe with binary signals 3G detectors. • Reduce contributions from binary signals as much as necessary Ashish Sharma !,# $%& '$% ($)*+ !,# 1 Gran Sasso Science Institute, (subtraction, projection) L ’ Aquila, Italy • Implementing methods for 2 INFN, Laboratori Nazionali del Gran Sasso, stochastic signal search. Assergi, Italy • Even when foreground is resolved, estimated signal waveform deviates from the true signal due to instrumental noise or confusion noise.

Analytical template for gravitational-wave echoes from spinning remnants Elisa Maggio Gravitational-wave echoes in the postmerger signal of a binary coalescence can be a smoking gun of near-horizon quantum structures and of exotic ultracompact stars. We provide a physically motivated echo template that can be implemented for matched filter searches. arXiv:1907.03091 PRD in press

Lorenzo Annulli, PhD @ CENTRA, IST Poster about "scattering processes" Motivated by: Gravitational Wave Afterglow of Environmental effects on GW propagation Stellar Collapse in Massive Scalar- Population of astrophysical objects Tensor Gravity We wondered: Effect of a wave hitting on a binary system? Ulrich Sperhake I will show you: Setup Scattered Incident Method Results... 1 Kavli RISE Summer School on Gravitational Waves, Cambridge UK, 23/09