GCN Alert: Messaggio GCN inviato alle 2025-06-29 01:35:18: S250628au Most probable sky…

{
    "alert_type": "PRELIMINARY",
    "time_created": "2025-06-28T23:35:14Z",
    "superevent_id": "S250628au",
    "urls": {
        "gracedb": "https://gracedb.ligo.org/superevents/S250628au/view/"
    },
    "event": {
        "significant": false,
        "time": "2025-06-28T23:30:10.330Z",
        "far": 9.826615e-6,
        "instruments": [
            "L1"
        ],
        "group": "CBC",
        "pipeline": "MBTA",
        "search": "AllSky",
        "properties": {
            "HasNS": 1,
            "HasRemnant": 0.08033864019262041,
            "HasMassGap": 0.24903192585775852
        },
        "classification": {
            "Terrestrial": 0.998777459,
            "BNS": 0.00067919,
            "BBH": 0,
            "NSBH": 0.000543352
        },
        "duration": null,
        "central_frequency": null
    },
    "external_coinc": null
}