{
  "createdOn": 1725110769374,
  "subject": "GRB 240825A: SOAR observations",
  "submittedHow": "web",
  "body": "J. Freeburn (Swinburne/OzGrav) and I. Andreoni (UNC/UMD/NASA)\n\nWe observed the field of GRB 240825A (The Fermi GBM team,\nGCN 37273; Gupta et al., GCN 37274; Lalla et al., GCN 37288;\nEvans et al., 37290; Gropp et al., GCN 37294; Joshi et al.,\nGCN 37298; Sharma et al., GCN 37301; Frederiks et al., GCN 37302;\nWang and Xiong, GCN 37315; Moss et al., GCN 37355) with the \nGoodman High Throughput Spectrograph mounted on the SOAR telescope \nin imaging mode. We took one 300s exposure each in filters\ng,r and i between 2024-08-31T04:45:51 and 2024-08-31T05:00:23 UTC.\n\nWe place upper limits on the optical counterpart to GRB 240825A\n(Gupta et al., GCN 37274; Jiang et al., GCN 37275; Dutton et al., \nGCN 37276; Odeh et al., GCN 37277; Zhang et al., GCN 37278; \nLi et al., GCN 37280; Izzo et al., GCN 37287; Lipunov et al., \nGCN 37289; Leonini et al., GCN 37291; Wu et al., GCN 37292; \nMartin-Carrillo et al., GCN 37293; Brivio et al., GCN 37295; \nKuin et al., GCN 37296; Odeh et al., GCN 37299; Le Floc'h et al., \nGCN 37300; Guiffreda et al., GCN 37303; Zheng et al., GCN 37304; \nWang et al., GCN 37306; Maksut et al., GCN 37307; Melandri et al., \nGCN 37310; Romanov, GCN 37335; Moskvitin et al., GCN 37336; \nQiu et al., GCN 37338).  Zeropoints for each filter were measured \nusing the Pan-STARRS1 catalogue. Our AB magnitude 5-sigma upper \nlimits are as follows:\ng > 23.2\nr > 23.1\ni > 22.8",
  "circularId": 37361,
  "format": "text/plain",
  "bibcode": "2024GCN.37361....1F",
  "eventId": "GRB 240825A",
  "submitter": "James Freeburn at Swinburne University of Technology <jamesfreeburn54@gmail.com>"
}