{
  "bibcode": "2022GCN.32228....1O",
  "body": "B. O'Connor (UMD/GWU), E. Troja (U Tor Vergata/ASU), S. Dichiara (PSU),\nS. B. Cenko (UMD/GSFC), report on behalf of a larger collaboration:\n\nAdditional target of opportunity observations of GRB 220611A\n(Cenko et al. GCN 32191) were carried out with the FLAMINGOS-2\nspectrograph mounted on the Gemini-South telescope. Observations\nbegan at ~7.7 d in the Ks filter with a total exposure of 912 s.\n\nWe detect the GRB afterglow (O���Connor et al. GCNs 32203 and 32217,\nRastinejad et al. GCN 32208, Malesani et al. GCN 32222) with magnitude\nKs~21.8 AB mag calibrated against stars in the 2MASS catalog. Compared\nto earlier Ks data (O���Connor et al. GCN 32203, Rastinejad et al. GCN\n32208), the infrared counterpart���s temporal decay is consistent with the\ndecay observed in X-rays by Swift/XRT.\n\nWe thank the Gemini staff for rapid scheduling of these observations.",
  "circularId": 32228,
  "createdOn": 1655674740000,
  "email": "oconnorb@umd.edu",
  "subject": "GRB 220611A: Continued Gemini Infrared Observations",
  "submitter": "Brendan O'Connor at UMD  <oconnorb@umd.edu>",
  "eventId": "GRB 220611A"
}