GCN Alert: Messaggio GCN inviato alle 2025-08-20 05:09:01:

{
    "alert_type": "RETRACTION",
    "time_created": "2025-08-20T03:09:01Z",
    "superevent_id": "MS250820c",
    "urls": {
        "gracedb": "https://gracedb.ligo.org/superevents/MS250820c/view/"
    },
    "event": null,
    "external_coinc": null
}