GCN Circular 34955

Rahul Gupta, Amit K. Ror, Amar Aryan, and S. B. Pandey (ARIES) report on
behalf of a larger collaboration:

We observed the field of GRB 231104A detected by Fermi (Fermi GBM team, GCN
34937
Not found
 
 
; Principe et al., GCN 34943
Not found
 
 
), Swift (Page et al., GCN 34938
Not found
 
 
), and
AstroSat (Navaneeth et al., GCN 34945
Not found
 
 
) using the 3.6m Devasthal Optical
Telescope of ARIES Nainital. We have taken multiple frames having an
exposure time of 100 sec in the r and i filters, respectively. We do not
find any evidence of an afterglow candidate inside the Swift/XRT enhanced
error circle (Goad et al., GCN 34940
Not found
 
 
), consistent with other non-detections
(Strausbaugh et al., GCN 34939
Not found
 
 
; Kuin et al., GCN 34941
Not found
 
 
; Odeh et al., GCN
34946
Not found
 
 
; and Zhu et al., GCN 34951
Not found
 
 
). We obtained the limiting mag of ~ 24 mag
(r-band) at ~ 0.9 days post-detection.

The limiting magnitudes quoted are not corrected for the Galactic
extinction in the direction of the burst. Photometric calibration is
performed using the standard stars from the Pan-STARRS catalog.

This circular may be cited. 3.6m Devasthal Optical Telescope (DOT) is
the recently commissioned facility in the Northern Himalayan region of
India (long:79 41 04E, lat:29 21 40N, alt:2540m) owned and operated by the
Aryabhatta Research Institute of Observational Sciences (ARIES), Nainital (
https://www.aries.res.in). Authors of this GCN circular thankfully
acknowledge consistent support from the staff members to run and maintain
the 3.6m DOT.