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GCN Circular 12365

GRB 110918A: INT optical detection of Swift candidate afterglow
2011-09-20T13:53:36Z (13 years ago)
Nial Tanvir at U.Leicester <>
N.R. Tanvir, K. Wiersema (U. Leicester), A.J. Levan, S. Greiss,��
B. Gaensicke (U. Warwick) report on behalf of a larger collaboration:��

We observed the field of IPN burst GRB 110918A (Hurley et al. GCN
12357) with the Isaac Newton Telescope on La Palma, using the Wide
Field Camera starting at 20-Sep-2011 02:22 UT, roughly 29 hours
post-burst. ��Close to the location of the X-ray source reported by Mangano
et al. (GCN 12364) we detect a bright optical point-source which is not
visible in the DSS2 images of the region.

Very provisional calibration gives a magnitude R~19.0-19.5 (well above the
DSS2 limit) and a position:��

RA(2000)=02 10 09.39��
dec(2000)=-27 06 19.6��

accurate to ~0.5" in each coordinate. ��We cannot yet assess variability.
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