[vsnet-grb-info 21061] GRB 180821A: BOOTES-3/YA optical observations
GCN Circulars
gcncirc at capella2.gsfc.nasa.gov
Wed Aug 22 04:09:48 JST 2018
TITLE: GCN CIRCULAR
NUMBER: 23159
SUBJECT: GRB 180821A: BOOTES-3/YA optical observations
DATE: 18/08/21 19:09:08 GMT
FROM: Alberto Castro-Tirado at Inst.de Astro. de Andalucia <ajct at iaa.es>
E. Fernandez-Garcia, Y.-D. Hu, J. C. Tello, A. Ayala and A. J.
Castro-Tirado (IAA-CSIC), I. Carrasco and C. Perez del Pulgar (Univ. de
Malaga), M. D.
Caballero-Garcia and M. Jelinek (ASU-CAS, CZ), R. Cunniffe (Inst. of
Physics, CZ) and R. Querel (NIWA), on behalf of a larger collaboration,
report:
The 60cm BOOTES-3/YA robotic telescope at NIWA Lauder in Otago (New
Zealand) automatically responded in 59s (and 193s after the GRB onset)
to the Swift trigger of GRB 180821A (Tohuvavohu et al., GCNC 23158). The
first images (clear filter) were obtained starting at 16:43:47 UT. At
the position of the Swift/XR X-ray position, no optical afterglow is
detected down to 19 mag on a 100s co-added image at 16:44:45
(mid-exposure), in agreement with the non-detection by Swift/UVOT.
Further analysis is ongoing.
We thank the staff at NIWA for its excellent support.
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