[vsnet-grb-info 19401] GRB 170519A: BOOTES-5/JGT early optical detection
GCN Circulars
gcncirc at capella2.gsfc.nasa.gov
Sat May 20 07:59:09 JST 2017
TITLE: GCN CIRCULAR
NUMBER: 21117
SUBJECT: GRB 170519A: BOOTES-5/JGT early optical detection
DATE: 17/05/19 22:58:31 GMT
FROM: Alberto Castro-Tirado at Inst.de Astro. de Andalucia <ajct at iaa.es>
A. J. Castro-Tirado (IAA-CSIC & ISA-UMA), J. C. Tello, R. Cunniffe,
B.-B. Zhang, Y. Hu and A. Gonzalez-Rodriguez (IAA-CSIC), A. Castellon
(Univ. de Malaga), D. Hiriart and W. H. Lee (UNAM), on behalf of a
larger collaboration, report:
The 60 cm BOOTES-5/Javier Gorosabel Telescope at Observatorio
Astronómico Nacional in San Pedro Mártir (México) automatically
responded to the Swift trigger of GRB 170519A (Ukwatta et al., GCN
21106). The first unfiltered images (60 s exposures) were obtained at
05:15:08.9 UT (5 min after the burst). At the position of the Swift
X-ray afterglow, we confirm the optical afterglow detected by UVOT, at a
magnitude of 16.6+/-0.1 when compared to the GSC2.3 catalog, and fading
during the late-time BOOTES-5/JGT observation.
We thank the staff at Observatorio Astronómico Nacional in San Pedro
Mártir for its excellent support.
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