REVIEW 1 minor 2 cited by
LIGO, Virgo, and KAGRA release calibrated strain data from the second part of the fourth observing run.
Reviewed by Pith at T0; open to challenge. T0 means a machine referee read the full paper against a public rubric. the ladder, T0–T4 →
T0 review · grok-4.3
2026-06-29 16:06 UTC pith:GP4GTQTG
load-bearing objection Standard data release paper for O4b; the value sits in the public files, not in any new analysis or claim.
Open Data from LIGO, Virgo, and KAGRA through the Second Part of the Fourth Observing Run
The pith
A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.
Core claim
The public data set includes calibrated strain time series for each instrument, data from additional channels used for noise subtraction and detector characterization, and new analysis data products in the online GWOSC release associated with version 5.0 of the Gravitational-Wave Transient Catalog for times spanning April 6th, 2024 to January 28th, 2025.
What carries the argument
The online GWOSC release of the data products associated with GWTC-5.0, which distributes the strain and auxiliary data from the observatories.
Load-bearing premise
The public files accurately correspond to the stated calibration, noise subtraction methods, and observation times without errors in the internal data processing.
What would settle it
Downloading the files and finding that their time coverage or calibration constants differ from the paper's description would show the release does not match the claim.
If this is right
- Independent analyses of the O4b data become possible using the public files.
- The inclusion of KAGRA data extends the network coverage available for public study.
- New analysis products facilitate work on the transient catalog updates.
- Data from the engineering run ER16 is also incorporated for selected periods.
Where Pith is reading between the lines
- This release could allow cross-verification of event detections by external teams.
- Future papers might use this data to search for signals missed in the official catalog.
- The growing public archive supports long-term studies of detector performance over multiple runs.
Editorial analysis
A structured set of objections, weighed in public.
Referee Report
Summary. The manuscript announces the public release via the Gravitational Wave Open Science Center (GWOSC) of calibrated strain time series, auxiliary detector channels, and associated analysis products from the LIGO-Virgo-KAGRA-GEO600 network. The release covers the second part of the fourth observing run (O4b) together with selected segments of the preceding engineering run (ER16), spanning 6 April 2024 to 28 January 2025, and is tied to version 5.0 of the Gravitational-Wave Transient Catalog.
Significance. The data release is of clear significance to the gravitational-wave community. Timely public availability of calibrated strain and auxiliary channels from the ongoing O4 run enables independent verification, new searches, and multi-messenger follow-up by the broader scientific community. The explicit linkage to GWOSC v5.0 and the catalog products further increases the immediate usability of the dataset.
minor comments (1)
- The abstract and title refer to “the second part of the fourth observing run (O4b)” without an explicit definition of the O4a/O4b boundary; a single sentence in §1 or a footnote citing the official run segmentation would remove any ambiguity for readers.
Simulated Author's Rebuttal
We thank the referee for their positive review, recognition of the data release's significance to the gravitational-wave community, and recommendation to accept the manuscript. No major comments were provided for response.
Circularity Check
No significant circularity
full rationale
This is a pure data-release announcement paper with no derivations, equations, fitted parameters, models, or load-bearing claims that could reduce to self-definition or self-citation. The central content is a catalog of released files (calibrated strain, auxiliary channels, GWTC-5.0 products) whose validity is external to the manuscript; the weakest assumption (file contents match stated calibration and coverage) is definitional for any release note and does not create an internal circular step. No self-citation chain or ansatz is invoked to justify a result.
Axiom & Free-Parameter Ledger
read the original abstract
LIGO, Virgo, KAGRA, and GEO 600 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 (GWOSC). This paper describes open data from this network, including the addition of data from the second part of the fourth observing run (O4b) and selected periods from the preceding engineering run (ER16), which were collected from times spanning April 6th, 2024 to January 28th, 2025. The public data set includes calibrated strain time series for each instrument, data from additional channels used for noise subtraction and detector characterization, and new analysis data products in the online GWOSC release associated with version 5.0 of the Gravitational-Wave Transient Catalog.
Figures
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Reference graph
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discussion (0)
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