GCN Circular 38837
Subject
GRB 250101A: J band upper limit by SYSU 80cm telescope
Date
2025-01-07T06:20:55Z (2 days ago)
From
Jiaqi Lin <islinjiaqi@gmail.com>
Via
Web form
Jia-Qi Lin, Jin-Ji Li, Zhong-Nan Dong, Si-Yuan Zhu, Wei-Sen Huang, Pu Lin, Hao-Nan Yang, Yan Yu, Hao-Ran Zhang, Pak-Hin Thomas Tam, Bin Ma (Sun Yat-sen University) report on behalf of the SYSU 80cm telescope team:
We observed the field of GRB 250101A (Page et al., GCN 38752), using the Sun Yat-sen University 80cm telescope, with 158 × 20 s exposures in J band. Our observations began at 2025-1-1 15:18:18 UTC, 1.92 hours after the BAT trigger.
We did not detect any counterpart in the stacked images at the position of the optical afterglow (Li et al., GCN 38753; Mohan et al., GCN 38754; Zhu et al., GCN 38755; Budnev et al., GCN 38756; Wu et al., GCN 38758; Odeh et al., GCN Circular 38763), down to a 5-sigma depth of J ~ 18.0 Vega magnitudes.