S250227ch Copy superevent ID Show full identifier

Changes from previous version af767aae to selected version 1979c7cb

Change legend: Added exists only in the selected version; Removed exists only in the baseline; Changed has different values.

2 field changes.

• Changed GraceDB › Events › 0 › CatalogVersion

  Baseline

  16

  Selected

  17

• Changed GraceDB › LastUpdate

  Baseline

  2026-07-16 01:04:45.751970

  Selected

  2026-08-27 00:56:52.879567

{"Info": {"Notes": [], "Labels": [], "SchemaVersion": "v3"}, "Sname": "S250227ch", "GraceDB": {"ADVOK": true, "Events": [{"FAR": 9.60245085e-06, "UID": "G638111", "Notes": [], "State": "neighbor", "GPSTime": 1424687763.636292, "Pipeline": "CWB", "NetworkSNR": 8.678245790480931, "SearchType": "offline", "EarlyWarning": false, "CatalogNumber": "6", "CatalogVersion": 16, "InOfflineCatalog": true}, {"FAR": 4.257850384944733e-05, "UID": "G557987", "XML": "https://gracedb.ligo.org/api/v2/events/G557987/files/coinc.xml", "Pbbh": 0.02054891187781437, "Pbns": 3.098199337200404e-15, "H1SNR": 5.500802, "HasNS": 0.0, "L1SNR": 4.7832284, "Mass1": 39.187502, "Mass2": 34.569658, "Notes": [], "Pnsbh": 2.1081573955966954e-13, "State": "preferred", "V1SNR": 2.0891495, "Pastro": 0.02054891187802832, "Skymap": "https://gracedb.ligo.org/api/v2/events/G557987/files/bayestar.multiorder.fits", "Spin1z": -0.47953125, "Spin2z": -0.47953125, "GPSTime": 1424687763.650513, "Pipeline": "gstlal", "HasMassGap": 0.004106583072100313, "HasRemnant": 0.0, "NetworkSNR": 7.583049684333547, "SearchType": "low latency", "EarlyWarning": false, "InOfflineCatalog": false, "SourceClassification": "https://gracedb.ligo.org/api/v2/events/G557987/files/gstlal.p_astro.json"}], "LastUpdate": "2026-07-16 01:04:45.751970", "Instruments": "H1,L1,V1", "SupereventFAR": 9.60245085e-06}, "Lensing": {"SingletAnalyses": {}, "MultipletAnalyses": {}}, "Cosmology": {"Notes": [], "Counterparts": [], "PreferredLowLatencySkymap": "https://gracedb.ligo.org/api/v2/events/G557987/files/bayestar.multiorder.fits", "CosmologyRunsUsingThisSuperevent": []}, "TestingGR": {"Notes": [], "BHMAnalyses": [], "FTIAnalyses": [], "MDRAnalyses": [], "POLAnalyses": [], "SIMAnalyses": [], "SMAAnalyses": [], "SSBAnalyses": [], "LOSAAnalyses": [], "IMRCTAnalyses": [], "TIGERAnalyses": [], "PCATGRAnalyses": [], "PYRINGAnalyses": [], "PSEOBRDAnalyses": [], "EchoesCWBAnalyses": [], "ResidualsAnalyses": [], "ModeledEchoesAnalyses": [], "UnmodeledEchoesAnalyses": [], "QNMRationalFilterAnalyses": []}, "Publications": {"Papers": []}, "ExtremeMatter": {"Analyses": []}, "CatalogTracking": {"Notes": [], "SearchResultStatuses": [{"UID": "CWB", "Chunk": 0, "Notes": [], "Finalized": false, "ReviewStatus": "unstarted"}], "ParameterEstimationStatuses": []}, "ParameterEstimation": {"Notes": [], "Status": "unstarted", "Results": [], "Analysts": [], "Reviewers": [], "SafeSamplingRate": 4096.0, "SafeLowerMassRatio": 0.05}, "RatesAndPopulations": {"RnPRunsUsingThisSuperevent": []}, "DetectorCharacterization": {"Notes": [], "Status": "unstarted", "Analysts": [], "Reviewers": [], "DQRResults": [], "RecommendedDetectors": [], "ParticipatingDetectors": []}}

{"Info": {"Notes": [], "Labels": [], "SchemaVersion": "v3"}, "Sname": "S250227ch", "GraceDB": {"ADVOK": true, "Events": [{"FAR": 9.60245085e-06, "UID": "G638111", "Notes": [], "State": "neighbor", "GPSTime": 1424687763.636292, "Pipeline": "CWB", "NetworkSNR": 8.678245790480931, "SearchType": "offline", "EarlyWarning": false, "CatalogNumber": "6", "CatalogVersion": 17, "InOfflineCatalog": true}, {"FAR": 4.257850384944733e-05, "UID": "G557987", "XML": "https://gracedb.ligo.org/api/v2/events/G557987/files/coinc.xml", "Pbbh": 0.02054891187781437, "Pbns": 3.098199337200404e-15, "H1SNR": 5.500802, "HasNS": 0.0, "L1SNR": 4.7832284, "Mass1": 39.187502, "Mass2": 34.569658, "Notes": [], "Pnsbh": 2.1081573955966954e-13, "State": "preferred", "V1SNR": 2.0891495, "Pastro": 0.02054891187802832, "Skymap": "https://gracedb.ligo.org/api/v2/events/G557987/files/bayestar.multiorder.fits", "Spin1z": -0.47953125, "Spin2z": -0.47953125, "GPSTime": 1424687763.650513, "Pipeline": "gstlal", "HasMassGap": 0.004106583072100313, "HasRemnant": 0.0, "NetworkSNR": 7.583049684333547, "SearchType": "low latency", "EarlyWarning": false, "InOfflineCatalog": false, "SourceClassification": "https://gracedb.ligo.org/api/v2/events/G557987/files/gstlal.p_astro.json"}], "LastUpdate": "2026-08-27 00:56:52.879567", "Instruments": "H1,L1,V1", "SupereventFAR": 9.60245085e-06}, "Lensing": {"SingletAnalyses": {}, "MultipletAnalyses": {}}, "Cosmology": {"Notes": [], "Counterparts": [], "PreferredLowLatencySkymap": "https://gracedb.ligo.org/api/v2/events/G557987/files/bayestar.multiorder.fits", "CosmologyRunsUsingThisSuperevent": []}, "TestingGR": {"Notes": [], "BHMAnalyses": [], "FTIAnalyses": [], "MDRAnalyses": [], "POLAnalyses": [], "SIMAnalyses": [], "SMAAnalyses": [], "SSBAnalyses": [], "LOSAAnalyses": [], "IMRCTAnalyses": [], "TIGERAnalyses": [], "PCATGRAnalyses": [], "PYRINGAnalyses": [], "PSEOBRDAnalyses": [], "EchoesCWBAnalyses": [], "ResidualsAnalyses": [], "ModeledEchoesAnalyses": [], "UnmodeledEchoesAnalyses": [], "QNMRationalFilterAnalyses": []}, "Publications": {"Papers": []}, "ExtremeMatter": {"Analyses": []}, "CatalogTracking": {"Notes": [], "SearchResultStatuses": [{"UID": "CWB", "Chunk": 0, "Notes": [], "Finalized": false, "ReviewStatus": "unstarted"}], "ParameterEstimationStatuses": []}, "ParameterEstimation": {"Notes": [], "Status": "unstarted", "Results": [], "Analysts": [], "Reviewers": [], "SafeSamplingRate": 4096.0, "SafeLowerMassRatio": 0.05}, "RatesAndPopulations": {"RnPRunsUsingThisSuperevent": []}, "DetectorCharacterization": {"Notes": [], "Status": "unstarted", "Analysts": [], "Reviewers": [], "DQRResults": [], "RecommendedDetectors": [], "ParticipatingDetectors": []}}