[vsnet-grb-info 4550] GRB 070419B optical afterglow candidate

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  6314
SUBJECT: GRB 070419B optical afterglow candidate
DATE:    07/04/19 15:19:16 GMT
FROM:    Alberto Castro-Tirado at Inst.de Astro. de Andalucia  <ajct at iaa.es>

P. Tristram (MOA, Univ. of Canterbury), A. J. Castro-Tirado,
A. de Ugarte Postigo (IAA-CSIC Granada), A. Gilmore,
P. Kilmartin (Univ. of Canterbury), J. Gorosabel, M. Jelínek
and R. Cunniffe (IAA-CSIC Granada),

report:

"Following the detection by Swift of the GRB 070419B
(Parson et al. GCNC 6305), we have obtained R & I -band
images at the 0.6m B&C telescope at the Mt. John Observatory
on Lake Tekapo, New Zealand. They were taken starting
on Apr 19.537 UT (i.e. 2.17 hr post-burst).

The single frames (360s in R) reveal a point-like source
with R ~ 20 consistent with the Swift/XRT error box which
is not present in the DSS-2 red. Preliminary coordinates
(+/- 1") yield:

AR(2000): 21:02:49.80
Dec(2000): -31:15:49.23

More details will be given on forthcoming GCN Circular."

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