TITLE:   GCN CIRCULAR
NUMBER:  38121
SUBJECT: GRB 241105a: PRIME near-infrared upper limits
DATE:    24/11/07 21:40:20 GMT
FROM:    Joe Durbak at UMD <gcn.joedurbak@gmail.com>

J. Durbak (UMD), O. Guiffreda (UMD), S. Atri (U Rome), A. S. Kutyrev (NASA/GSFC), E. Troja (U Rome), S. B. Cenko (NASA/GSFC)

Following the Fermi GBM detection (GCN 38085), we observed the transient field in J-filter with PRIME ~31 hours after Fermi GBM detection.

At the counterpart positions reported by GOTO (GCN 38088), Swift XRT (GCN 38098), and Swift UVOT(GCN 38110), we detect no uncatalogued sources in J-band. Using nearby VISTA Hemispherical Survey (VHS) stars for preliminary calibration we derive a limiting magnitude of <21.2 AB, not corrected for Galactic extinction.  

PRIME 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).

We thank the Osaka University observers at PRIME and the staff at SAAO for their support with these observations.