GCN Alert: Messaggio GCN inviato alle 2025-07-04 04:14:05: S250704m Most probable sky…

{
    "alert_type": "PRELIMINARY",
    "time_created": "2025-07-04T02:14:04Z",
    "superevent_id": "S250704m",
    "urls": {
        "gracedb": "https://gracedb.ligo.org/superevents/S250704m/view/"
    },
    "event": {
        "significant": false,
        "time": "2025-07-04T02:08:17.371Z",
        "far": 4.30717e-6,
        "instruments": [
            "H1",
            "L1"
        ],
        "group": "CBC",
        "pipeline": "CWB",
        "search": "BBH",
        "properties": {
            "HasNS": 0,
            "HasRemnant": 0,
            "HasMassGap": 0.05978696303696305
        },
        "classification": {
            "Terrestrial": 0.9938974955850852,
            "BNS": 0,
            "BBH": 0.006102504414914778,
            "NSBH": 0
        },
        "duration": null,
        "central_frequency": null
    },
    "external_coinc": null
}