Skip to main content
Testing. You are viewing the public testing version of GCN. For the production version, go to https://gcn.nasa.gov.
New Announcement Feature, Code of Conduct, Circular Revisions. See news and announcements

GCN Circular 30742

Subject
GRB 210827A: BOOTES-5/JGT optical upper limit
Date
2021-08-29T16:06:32Z (3 years ago)
From
Youdong HU at IAA-CSIC <huyoudong072@hotmail.com>
Y.-D. Hu, T.-R. Sun, E. Fernandez-Garcia, A. J. Castro-Tirado and M.D. Caballero-Garcia (IAA-CSIC), D. Hiriart and W. H. Lee (UNAM), C. J. Perez del Pulgar and I. Carrasco (UMA), I. H. Park (SKKU) on behalf of a larger collaboration, report:

We triggered the 60cm BOOTES-5/JGT robotic telescope at Observatorio Astronomico Nacional in San Pedro Martir (Mexico) for the Fermi trigger of GRB 210827A (Fermi GBM team, GCNC 30724) in order to monitor the Swift/BAT-GUANO error region (DeLaunay et al. GCNC 30732) on 28 Aug 05:25 UT (~ 0.81 day after trigger). In the co-added clear image (8 x 60 s), no optical afterglow is detected within the BAT error region or at the source 3 position later reported by the Swift-XRT (Evans et al., GCNC 30733; Gropp et al., GCNC 30734) down to 19.7 mag. This non-detection is consistent with the report by MASTER-Net (Lipunov et al., GCNC 30736).

We thank the staff at Observatorio Astronomico Nacional in San Pedro Martir for its excellent support.
Looking for U.S. government information and services? Visit USA.gov