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GCN Circular 37350

Subject

GRB 240828B: GMG Optical Upper Limit

Date

2024-08-30T09:03:28Z (3 months ago)

From

wangbaiting@ynao.ac.cn

Via

Web form

B.-T. Wang, R.-Z. Li, F.-F. Song, J. Mao, K.-X. Lu and J.-M. Bai (YNAO, CAS) report:

We observed the field of GRB 240828B (SVOM/ECLAIRs, T0 at 2024-08-28T13:12:43, GCN 37318Not found
 
 
) using the GMG-2.4m telescope at the Lijiang Observatory. The observation began at 2024-08-28T19:21:41.934, about 6.13 hours after the trigger.

No new reliable optical counterpart was detected within the 2.6-arcsec Swift/XRT error circle (GCN 37334Not found
 
 
), down to a 5-sigma limiting magnitude of sdss-r ～ 21.7 mag, derived from calibration against the Pan-STARRS DR1 field stars.

We acknowledge the staff at the Lijiang Observatory for conducting the observation.