GCN Alert: Messaggio GCN inviato alle 2026-07-09 14:10:57:

{
    "alert_type": "RETRACTION",
    "time_created": "2026-07-09T12:10:57Z",
    "superevent_id": "MS260709l",
    "urls": {
        "gracedb": "https://gracedb.ligo.org/superevents/MS260709l/view/"
    },
    "event": null,
    "external_coinc": null
}