Detection of gravitational-wave bursts with chirplet-like template families

Understand

Gravitational Wave (GW) burst detection algorithms typically rely on the hypothesis that the burst signal is "locally stationary", that is it changes slowly with frequency.

• Under this assumption, the signal can be decomposed into a small number of wavelets with constant frequency.
• This justifies the use of a family of sine-Gaussian templates in the Omega pipeline, one of the algorithms used in LIGO-Virgo burst searches.
• However there are plausible scenarios where the burst frequency evolves rapidly, such as in the merger phase of a binary black hole and/or neutron star coalescence.