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GCN Circular 4340

Subject
GRB 051211B: Swift/UVOT upper limits
Date
2005-12-12T14:02:43Z (19 years ago)
From
Alexander Blustin at MSSL-UCL <ajb@mssl.ucl.ac.uk>
A. J. Blustin (UCL-MSSL), V. La Parola (INAF-IASF), M. Chester (PSU),
L. Angelini (GSFC-JHU), N. Gehrels (GSFC) on behalf of the Swift/UVOT team

The Swift/UVOT began observing the field of GRB 051211b at 01:05:32 on
2005-12-12, ~3 hours after the INTEGRAL trigger (Mereghetti et al.,
GCN 4327). No source was detected at either the XRT (Pagani et al.,
GCN 4332) or Magellan (Klotz et al., GCN 4328) positions in summed
images down to the following 3-sigma upper limits (not corrected for 
extinction).

Filter   T_range(hours)  Exp(s)  3sigUL(mag)

V        3-11.5          7165    21.0
M2       3.25-11.75      7279    21.3
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