{
  "bibcode": "2021GCN.29930....1L",
  "body": "A. Y. Lien (GSFC/UMBC), A. P. Beardmore (U Leicester),\nand K. L. Page (U Leicester) report on behalf of the Neil Gehrels\nSwift Observatory Team:\n\nWe received further data from recent telemetry downlink.\nThe trigger time for GRB 210504A (Swift trigger #1046782;\nBeardmore et al., GCN Circ. 29929) is\n2021-05-04T13:54:53 UTC.\n\nBased on currently available data from T-60 to T+63 sec,\nthe burst duration is longer than 50 seconds.",
  "circularId": 29930,
  "createdOn": 1620148297000,
  "email": "amy.y.lien@nasa.gov",
  "subject": "GRB 210504A: update on the BAT trigger time and burst duration",
  "submitter": "Amy Lien at GSFC  <amy.y.lien@nasa.gov>",
  "eventId": "GRB 210504A"
}