{
  "subject": "GRB 241113A: PRIME near-infrared upper limits",
  "submittedHow": "web",
  "createdOn": 1731628826153,
  "format": "text/plain",
  "eventId": "GRB 241113A",
  "bibcode": "2024GCN.38227....1D",
  "body": "\nJ. Durbak (UMD), O. Guiffreda (UMD), A. S. Kutyrev (NASA/GSFC), E. Troja (U Rome), S. B. Cenko (NASA/GSFC)\n\nFollowing the Swift BAT detection (GCN 38194), we observed the transient field in J and H filters with PRIME ~13 hours after Swift BAT detection.\n\nAt the counterpart positions reported by Swift XRT and UVOT and (GCN 38194, GCN 38198), LCOGT (GCN 38197), LCO (GCN 38201) and KAIT (GCN 38216), we detect no uncatalogued sources in J-band. Using nearby VISTA Hemispherical Survey (VHS) stars for preliminary calibration we derive a limiting magnitude of <20.4 AB. We also detect no uncatalogued sources in H-band. Using nearby 2MASS stars for preliminary calibration we derive a limiting magnitude of <20.6 AB. Neither of these results are corrected for Galactic extinction.\n\nPRIME is a 1.8m telescope with 1.56 square degree FOV (0.5 arcsec/pixel) located in Sutherland, South Africa at the South African Astronomical Observatory (SAAO) (Kutyrev et al. 2023, Yama et al. 2023, Durbak et al. 2024).\n\nWe thank the Osaka University observers at PRIME and the staff at SAAO for their support with these observations.",
  "circularId": 38227,
  "submitter": "Joe Durbak at UMD <gcn.joedurbak@gmail.com>"
}