{
  "subject": "GRB 260706A: LCO optical upper limit",
  "body": "A. Saccardi (CEA/Irfu), D. Turpin (CEA/Irfu), F. Daigne, M. Pillas (IAP), report on behalf of the SVOM mission team:\n\nWe observed the field of GRB 260706A detected by SVOM/ECLAIRs (Alaux et al., GCN 45089) and Fermi/GBM (Fermi GBM team, GCN 45088; Trigg et al., GCN 45093), with the LCO 1m telescope at Cerro Tololo Observatory equipped with the Sinistro instrument.\n\nOur observation started on 2026-07-07 at 08:15:35 UT (about 16 hr after the trigger) and we obtained 3x200 s exposures in the SDSS r filter.\n\nIn the stacked image, we do not detect any new source within the EP/FXT error box (Liang et al., GCN 45097). We measure the following upper limit calibrated against the SkyMapper DR4 catalog, and not corrected for Galactic extinction:\n\nr > 22.3 AB (3-sigma, mid-time 16.14 hr after the trigger).\n\nThis project is funded by the SVOM collaboration.\n",
  "format": "text/plain",
  "circularId": 45098,
  "eventId": "GRB 260706A",
  "submittedHow": "web",
  "createdOn": 1783416630987,
  "submitter": "SVOM_group <svomgroup@bao.ac.cn>"
}