Gravitational Waves

Gravitational-Wave Core-­Collapse Supernova Science with Advanced and Future Generation Interferometers

by Marek Szczepanczyk (Embry-Riddle Aeronautical University, Prescott, Arizona, USA)

N328 (Nikhef)



Core-Collapse Supernovae (CCSNe) are the spectacular and violent deaths of massive stars. The study of Gravitational Waves (GW) from CCSNe can help elucidate the explosion mechanism and give us information about the physical properties of the collapsed core like Equation of State, neutrino mass hierarchy, core mass, proto-neutron star evolving size as well as unknown physics (silent supernovae or quark stars). In this talk I will review the state-of-art techniques used to search for GW from CCSNe and current work on detection perspectives with future GW Observatories. Given the large variety of possible GW morphologies (usually long and broadband), the reconstruction of the waveform and extraction of physical information is a difficult task. It requires a deep understanding of multi-dimensional CCSN simulations, data analysis caveats, detector response, as well as understanding how insights provided by neutrino and electromagnetic messengers help us extract GW signals from the detector noise. In the LIGO/Virgo Supernova Working Group we work on all aspects leading to direct detection of GW from CCSN and extracting physical information. I will talk about properties of the CCSN waveforms, their deterministic and non-deterministic components, algorithm development that uses the deterministic features (like g-modes) used to increase the visible distance for CCSN detection. I will also review the detection range, future algorithm developments and detection capabilities with the designs of future detector configurations.