GCN Alert: Messaggio GCN inviato alle 2026-01-20 11:13:39:

{
    "alert_type": "RETRACTION",
    "time_created": "2026-01-20T10:13:39Z",
    "superevent_id": "MS260120j",
    "urls": {
        "gracedb": "https://gracedb.ligo.org/superevents/MS260120j/view/"
    },
    "event": null,
    "external_coinc": null
}