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GCN Circular 18099

GRB150724B: Retraction of the uvot detection
2015-07-31T21:00:42Z (9 years ago)
Paul Kuin at MSSL <>
Paul Kuin (MSSL/UCL) reports on behalf of the Swift/UVOT

In GCN Circ.18075 we reported a detection in the first two
white band images with the Swift UVOT.

Further examination of the UVOT data showed that in the
initial analysis the background region included part off
the detector and gave a false reading. Correcting for that
it is found that for the first two images there is just an
upper limit of  white > 22.00 mag at 88.7ks after the

We apologise for the confusion this error may have caused.
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