GCN Alert: Messaggio GCN inviato alle 2025-07-04 14:58:05: S250704bj Most probable sky…

{
    "alert_type": "PRELIMINARY",
    "time_created": "2025-07-04T12:58:00Z",
    "superevent_id": "S250704bj",
    "urls": {
        "gracedb": "https://gracedb.ligo.org/superevents/S250704bj/view/"
    },
    "event": {
        "significant": false,
        "time": "2025-07-04T12:53:03.541Z",
        "far": 1.558993119193689e-5,
        "instruments": [
            "H1",
            "L1",
            "V1"
        ],
        "group": "CBC",
        "pipeline": "gstlal",
        "search": "AllSky",
        "properties": {
            "HasNS": 0,
            "HasRemnant": 0,
            "HasMassGap": 0.005275362318840579
        },
        "classification": {
            "BBH": 0.0709690898503573,
            "BNS": 1.1420437812765758e-15,
            "NSBH": 7.437945260134771e-14,
            "Terrestrial": 0.9290309101495672
        },
        "duration": null,
        "central_frequency": null
    },
    "external_coinc": null
}