{"name":"GW240921_201835","grace_id":"S240921cw","run":"O4b","gcn_notice":"https://gcn.gsfc.nasa.gov/notices_l/S240921cw.lvc","gcn_circular":"https://gcn.nasa.gov/circulars?query=S240921cw","aliases":["GW240921_201835"],"versions":[{"version":1,"catalog":"GWTC-5.0","detail_url":"https://gwosc.org/api/v2/event-versions/GW240921_201835-v1?format=json"}]}