Open Data from LIGO, Virgo, and KAGRA through the First Part of the Fourth Observing Run

Document #:

LIGO-P2500167-v11

Document type:

P - Publications

Abstract:

LIGO, Virgo, and KAGRA form a network of gravitational-wave observatories. Data and analysis results from this network are made publicly available through the Gravitational Wave Open Science Center. This paper describes open data from this network, including the addition of data from the first part of the fourth observing run (O4a) and selected periods from the preceding engineering run, collected from May 2023 to January 2024. The public data set includes calibrated strain time series for each instrument, data from additional channels used for noise subtraction and detector characterization, and analysis data products from version 4.0 of the Gravitational-Wave Transient Catalog.

Files in Document:

• o4a-opendata-v11.pdf (1.1 MB)

Topics:

• Computing/archiving

Author Groups:

• LVK

Notes and Changes:

Version submitted to arxiv

Referenced by:

• LIGO-P2400293-v11: GWTC-4.0: An Introduction to Version 4.0 of the Gravitational Wave Transient Catalog
• LIGO-P2400300-v11: GWTC-4: Methods for identifying and characterizing gravitational-wave transients

Publication Information:

Available on arXiv: https://arxiv.org/abs/2508.18079

Data available at https://gwosc.org/