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GCN Circular 13327

Subject
GRB 120521A: XRT light curve (Correction to GCN 13326)
Event
GRB 120521A
Date
2012-05-22T07:22:33Z (13 years ago)
From
Phil Evans at U of Leicester <pae9@leicester.ac.uk>
P.A. Evans (U. Leicester) reports on behalf of the Swift-XRT team:

There was an error in GCN 13326: the light curve decay slope was
reported as infinity.

The XRT light curve in fact shows a plateau (alpha=0.2 +/-0.4) until
T0+270 seconds. After this it undergoes an extremely sharp decay
(alpha~10) and is not detected in X-rays after T0+1ks.
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