web:https://www.ipam.ucla.edu/programs/workshops/computational-challenges-in-gravitational-wave-astronomy/?tab=overview

contact: D'Orsogna, Maria dorsogna@ipam.ucla.edu<dorsogna@ipam.ucla.edu>

The Nobel-Prize-winning observations of gravitational waves by the Advanced LIGO and Virgo detectors have

opened an entirely new window to study the universe. The detection of the first gravitational-wave signal, GW150914, on September 14th, 2015, can be considered one of the greatest scientific milestones of all time,

confirming a century-old prediction of Albert Einstein’s Theory of General Relativity. At present, gravitational

waves have been detected from mergers of binary black holes and binary neutron stars. Different types of

gravitational-wave signals from other sources await to be detected, as e.g. core-collapse supernovae, spinning

neutron stars, white-dwarf binary mergers, and even stochastic backgrounds of astrophysical or cosmological

origin.

The detection of gravitational waves is, foremost, a technological challenge. In addition, there are significant

mathematical and computational difficulties hampering the process of detection. One of them involves the

solution of Einstein’s gravitational field equations, either through approximate methods or by fully numerical

means, to generate waveform signals to aid the identification of the event types and the inference of their

physical properties. Another major computational difficulty is the analysis of large volumes of non-Gaussian,

non-stationary noisy data, aggravated by the presence of transient spurious signals (glitches) that may not only

disturb astrophysical signals but also mimic true signals, increasing the false-alarm rate and producing a decrease in the detectors’ duty cycle.

This workshop will bring together experts in the field of mathematical and numerical relativity, and researchers

in gravitational-wave data analysis, who will discuss recent advances for the detection and reconstruction of

gravitational-wave signals from advanced interferometers. It will cover aspects ranging from the formulation

of Einstein’s theory of General Relativity, including state-of-the-art numerical methodology for the generation

of waveform templates from astrophysical systems, to gravitational-wave detector characterization, data

analysis, and parameter estimation, with modern mathematical and numerical approaches.

Organizing Committee:

Marco Cavaglia (University of Mississippi)

Matt Choptuik (University of British Columbia)

Elena Cuoco (Scuola Normale Superiore)

José Antonio Font (University of Valencia)

Antonio Marquina (University of Valencia)

Stanley Osher (University of California, Los Angeles (UCLA))