GCN Alert: Messaggio GCN inviato alle 2025-07-18 22:54:01:S250718ea Most probable sky location…

{
    "alert_type": "PRELIMINARY",
    "time_created": "2025-07-18T20:53:58Z",
    "superevent_id": "S250718ea",
    "urls": {
        "gracedb": "https://gracedb.ligo.org/superevents/S250718ea/view/"
    },
    "event": {
        "significant": false,
        "time": "2025-07-18T20:48:39.959Z",
        "far": 2.200626e-5,
        "instruments": [
            "H1",
            "L1",
            "V1"
        ],
        "group": "CBC",
        "pipeline": "MBTA",
        "search": "AllSky",
        "properties": {
            "HasNS": 1,
            "HasRemnant": 0.9783017031787701,
            "HasMassGap": 0.4809555451213974
        },
        "classification": {
            "BNS": 0.00031015430777226496,
            "NSBH": 0.0003918555562709644,
            "BBH": 0,
            "Terrestrial": 0.9992979901359568
        },
        "duration": null,
        "central_frequency": null
    },
    "external_coinc": null
}