GCN Alert: Messaggio GCN inviato alle 2025-08-20 08:13:18:S250820ae Most probable sky location…

{
    "alert_type": "PRELIMINARY",
    "time_created": "2025-08-20T06:13:15Z",
    "superevent_id": "S250820ae",
    "urls": {
        "gracedb": "https://gracedb.ligo.org/superevents/S250820ae/view/"
    },
    "event": {
        "significant": false,
        "time": "2025-08-20T06:12:44.359Z",
        "far": 1.619407811847169e-5,
        "instruments": [
            "H1",
            "L1",
            "V1"
        ],
        "group": "CBC",
        "pipeline": "pycbc",
        "search": "AllSky",
        "properties": {
            "HasNS": 1,
            "HasRemnant": 0.9464267976423802,
            "HasMassGap": 0.00200990099009901
        },
        "classification": {
            "BNS": 0.000741560305261899,
            "NSBH": 0.0005876217599977224,
            "BBH": 0,
            "Terrestrial": 0.9986708179347403
        },
        "duration": null,
        "central_frequency": null
    },
    "external_coinc": null
}