coherent WaveBurst

cWB 6.4.8

Mon, 13 Jul 2026 00:00:00 +0000

New stable release of cWB is now available

Other cWB flavors

Tue, 19 May 2026 00:00:00 +0000

cWB exists in several flavors. PycWB is a new modular framework written in Python that retains the original cWB algorithm while improving flexibility, usability, and extensibility. It provides a Python-based interface, an improved injection infrastructure, and a streamlined post-production workflow; the pipeline is organized into modular stages, so users can modify existing components or add new ones without affecting the rest of the workflow. PycWB is open-source.

Publication of a cWB-2G paper on Classical and Quantum Gravity

Mon, 16 Mar 2026 00:00:00 +0000

Title: Optimizing searches for gravitational wave bursts using coherent WaveBurst-2G

GWTC-4 catalog: cWB reconstructed waveforms

Fri, 01 Aug 2025 00:00:00 +0000

GWTC-4: Compact Binary Coalescences Observed by LIGO and Virgo During the First part of the Fourth Observing Run

cWB 6.4.7

Fri, 31 Jan 2025 00:00:00 +0000

New testing release

cWB 6.4.6

Thu, 22 Feb 2024 00:00:00 +0000

Second O4 release of cWB is finally available

cWB 6.4.5

Wed, 16 Aug 2023 00:00:00 +0000

First O4 release of cWB is finally available

cWB 6.4.1

Thu, 23 Dec 2021 00:00:00 +0000

Final O3 release of cWB is available

GWTC-3 catalog: cWB reconstructed waveforms

Thu, 11 Nov 2021 00:00:00 +0000

GWTC-3: Compact Binary Coalescences Observed by LIGO and Virgo During the Second Half of the Third Observing Run

Publication of a cWB review paper on SoftwareX

Thu, 04 Mar 2021 00:00:00 +0000

Title: coherent WaveBurst, a pipeline for unmodeled gravitational-wave data analysis

cWB 6.4.0

Tue, 05 Jan 2021 00:00:00 +0000

O3 release of cWB is available

GW190521

Mon, 28 Dec 2020 00:00:00 +0000

On May 21, 2019 the LIGO/Virgo interferometers detected GW190521, the most massive gravitational wave binary observed to date. The two component black holes had masses of about 85 and 66 solar masses, and resulted in the formation of a black hole remnant of 142 solar masses. This remnant provides the first clear detection of an intermediate-mass black-hole.

GW150914

Mon, 21 Dec 2020 00:00:00 +0000

GW150914 is the first gravitational wave signal ever detected and the first discovery of a binary of black holes, marking the beginning of Gravitational astronomy. This discovery was made by the “online” low-latency version of coherent WaveBurst: the original screenshot of GW150914 event can be found here.

GWTC-1 catalog: cWB reconstructed waveforms

Sun, 20 Dec 2020 00:00:00 +0000

GWTC-1: Compact Binary Coalescences Observed by LIGO and Virgo During the First and Second Observing Runs

GWTC-2 catalog: cWB reconstructed waveforms

Sun, 20 Dec 2020 00:00:00 +0000

GWTC-2: Compact Binary Coalescences Observed by LIGO and Virgo During the First Half of the Third Observing Run

cWB 6.3.1

Mon, 30 Mar 2020 00:00:00 +0000

A new point release of cWB available

cWB 6.3.0

Fri, 12 Apr 2019 00:00:00 +0000

O2 release of cWB is available

GW150914

Sat, 19 Jan 2019 00:00:00 +0000

The first screenshot of GW150914 event

This is a copy of the original CED which triggered the attention of all the LIGO/Virgo Collaboration due to its strength and chirping morphology.

GW170818

Sat, 19 Jan 2019 00:00:00 +0000

This GW event was reconstructed by lowering the subnet threshold (from 0.5 to 0.0, i.e. allowing the reconstruction of GW events for which the Signal-to-Noise Ratio on one detector is much higher than on the others).

Note: In order to generate a skymap over the full sky area, this CED has been produced by setting the netCC=0.

GW170818

Sat, 19 Jan 2019 00:00:00 +0000

This GW event was reconstructed by lowering both the subnet threshold (from 0.5 to 0.0, i.e. allowing the reconstruction of GW events for which the Signal-to-Noise Ratio on one detector is much higher than on the others) and the netRHO (from 5.5 to 4.5, i.e. allowing the reconstruction of weaker GW events).

Note: In order to generate a skymap over the full sky area, this CED has been produced by setting the netCC=0.

O1 and O2 HL CEDs

Sat, 19 Jan 2019 00:00:00 +0000

2-fold ( ie HL ) GW events in O1/O2 (i.e. the first two observing runs by LIGO and Virgo)

cWB GW events list: detected and reconstructed events are shown with a green badge. Those reconstructed with a fine tuning of production thresholds are shown with an orange badge.

O2 HLV CEDs

Sat, 19 Jan 2019 00:00:00 +0000

3-fold GW events in O2 ( ie the second observing run by LIGO and Virgo )

cWB GW events list: detected and reconstructed events are shown with a green badge. Those reconstructed with a fine tuning of production thresholds are shown with an orange badge.

GW170817

Fri, 18 Jan 2019 00:00:00 +0000

Due to a large noise glitch in Livingston data which overlaps with GW170817, this GW event can only be reconstructed using special frames with the glitch removed. See [DCC document T1700406](https://dcc.ligo.org/LIGO-T1700406/public). [GW170817 Press Release](https://www.ligo.caltech.edu/page/press-release-gw170817)

Note: In order to generate a skymap over the full sky area, this CED has been produced by setting the netCC=0.

GW170817

Fri, 18 Jan 2019 00:00:00 +0000

Note: In order to generate a skymap over the full sky area, this CED has been produced by setting the netCC=0.

Getting Started with GW events

Sun, 06 Jan 2019 00:00:00 +0000

Here we describe how to perform the analysis of GWTC-1, GWTC-2, GWTC-3 and GWTC-4.0 events with the coherent WaveBurst pipeline.

GW150914

Sat, 05 Jan 2019 00:00:00 +0000

This was the first direct observation of a gravitational-wave signal. Its detection by the LIGO and Virgo Collaboration was triggered by cWB, which was the first algorithm that identifed GW150914. GW150914 Press Release

Note: In order to generate a skymap over the full sky area, this CED has been produced by setting the netCC=0.

GW151012

Sat, 05 Jan 2019 00:00:00 +0000

GW151012 is reconstructed with a "lump" of excess power after the merger which is likely to be a noise glitch.

Note: In order to generate a skymap over the full sky area, this CED has been produced by setting the netCC=0.

GW151226

Sat, 05 Jan 2019 00:00:00 +0000

GW151226 Press Release

Note: In order to generate a skymap over the full sky area, this CED has been produced by setting the netCC=0.

GW170104

Sat, 05 Jan 2019 00:00:00 +0000

[GW170104 Press Release](https://www.ligo.caltech.edu/page/press-release-gw170104)

Note: In order to generate a skymap over the full sky area, this CED has been produced by setting the netCC=0.

GW170608

Sat, 05 Jan 2019 00:00:00 +0000

Note: In order to generate a skymap over the full sky area, this CED has been produced by setting the netCC=0.

GW170729

Sat, 05 Jan 2019 00:00:00 +0000

This GW event was indentified by cWB with the highest significance and it is the most distant (luminosity distance ~ 2750 Mpc) and the heaviest BH remnant found so far (~80.3 solar-mass). [GWTC-1 Catalog Paper](https://arxiv.org/pdf/1811.12907.pdf)

Note: In order to generate a skymap over the full sky area, this CED has been produced by setting the netCC=0.

GW170729

Sat, 05 Jan 2019 00:00:00 +0000

Note: In order to generate a skymap over the full sky area, this CED has been produced by setting the netCC=0.

GW170809

Sat, 05 Jan 2019 00:00:00 +0000

Note: In order to generate a skymap over the full sky area, this CED has been produced by setting the netCC=0.

GW170809

Sat, 05 Jan 2019 00:00:00 +0000

Note: In order to generate a skymap over the full sky area, this CED has been produced by setting the netCC=0.

GW170814

Sat, 05 Jan 2019 00:00:00 +0000

Note: In order to generate a skymap over the full sky area, this CED has been produced by setting the netCC=0.

GW170814

Sat, 05 Jan 2019 00:00:00 +0000

[This is the fourth announced detection of a binary black hole system](https://www.ligo.caltech.edu/news/ligo20170927) and the first to show the scientific potential of a three-detector network of gravitational-wave detectors. [cWB was used to confirm its significance](https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.119.141101)

Note: In order to generate a skymap over the full sky area, this CED has been produced by setting the netCC=0.

GW170823

Sat, 05 Jan 2019 00:00:00 +0000

Note: In order to generate a skymap over the full sky area, this CED has been produced by setting the netCC=0.

Citations

Thu, 20 Dec 2018 00:00:00 +0000

We request that publications and other work arising from use of this code include a citation to the software through its DOI, avaliable from Zenodo.

Contact

Thu, 20 Dec 2018 00:00:00 +0000

At this time, while the software is free to use, we cannot guarentee any particular level of direct support. Interested individuals should direct questions to:

License

Thu, 20 Dec 2018 00:00:00 +0000

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, as described in the cWB citation guidelines.