Gravitational-Wave Transient Catalog events as reconstructed by cWB on the highest signal-to-noise ratio detector of the network (Livingston in blue, Hanford in orange).
Roll over the image to magnify it.

Coherent WaveBurst (cWB) is a data analysis pipeline designed for detection and reconstruction of gravitational-wave (GW) transients with the worldwide network of GW detectors. By using wavelets, it explores the data time-frequency structure and finds generic GW signals with weak (or none) assumptions on the source model.

cWB has been in active development since 2003 and it has been used to analyze all scientific data collected by the LIGO Virgo Collaboration (LVC) ever since. On September 14, 2015, the cWB low-latency search detected the first gravitational-wave event, GW150914, a merger of two black holes (LVC link). More recently, cWB played a major role in the discovery of the first intermediate-mass black-hole, GW190521 (LVC link); it also contributed to the measurement of inspiral higher order modes on GW190814 (LVC link). Coherent WaveBurst has been extensively used on compact coalescing binaries events from the Gravitational-Wave Transient Catalogs (GWTCs, i.e. the first and the second LVC catalogs): results have been collected on the GWTC-1, GWTC-2 and GWTC-3 summaries.

Quick start

The easiest way to use cWB is to install it through conda-forge: more details can be found in this README file.

Alternatively, the cWB VirtualBox image or the cWB Docker container can be used. More information on the Getting Started with GW events page.

Use of cWB

If you use cWB in your scientific publications or projects, we ask that you acknowlege our work by citing the publications that describe cWB and the software’s digital object identifier (DOI), as described in the citation guidelines. Since 2019, cWB code has been released with GPLv3 license.