[vsnet-grb-info 21817] GRB 190220B: BOOTES-4 optical observation
GCN Circulars
gcncirc at capella2.gsfc.nasa.gov
Thu Feb 21 08:06:54 JST 2019
TITLE: GCN CIRCULAR
NUMBER: 23916
SUBJECT: GRB 190220B: BOOTES-4 optical observation
DATE: 19/02/20 23:05:52 GMT
FROM: Alberto Castro-Tirado at Inst.de Astro. de Andalucia <ajct at iaa.es>
Y.-D. Hu, X.-Y.Li, E. Fernandez-Garcia, A. Ayala, A. J. Castro-Tirado
(IAA-CSIC), C. Perez del Pulgar, A. Castellon, I. Carrasco (Univ. de
Malaga), S. Guziy (Univ. of Nikolaev) and D. Xiong, Y. Fan, X. Zhao, J.
Bai, C. Wang, Y. Xin (Yunnan Nacional Astronomical Observatory) on
behalf of a larger collaboration, report:
"Following the detection of GRB 190220B by INTEGRAL (Gotz et al. GCNC
23915), the 0.6m BOOTES-4/MET robotic telescope at Lijiang Astronomical
Observatory (China) responded to the the burst gathering images starting
at 20:17:12 UT (89 s after trigger, 84 s after notice). No optical
afterglow candidate is found down to 18 mag (g'-band) in the co-added
(5x10s) image within the reported INTEGRAL 2 arcmin radius error box.
Observations are ongoing."
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