GRB 060223A
GCN Circular 4824
Subject
GRB 060223a: Swift/UVOT refined analysis
Date
2006-02-24T02:02:39Z (19 years ago)
From
Alexander Blustin at MSSL-UCL <ajb@mssl.ucl.ac.uk>
A. J. Blustin (UCL-MSSL), J. R. Cummings (NASA/ORAU) report on
behalf of the Swift/UVOT team:
The Swift/UVOT began observing the field of GRB 060223a 72 s
after the BAT trigger, detecting a red afterglow (Cummings
et al., GCN 4813; Marshall et al., GCN 4814). Analysis of a more
complete dataset shows that V was the only band to yield a
significant detection of the afterglow, as to be expected given
the redshift of the burst (z=4.41; Berger et al., GCN 4815).
The magnitudes and 3-sigma upper limits from all filters are
listed below.
Filter T_range (MET) Exp (s) Mag/3sigUL
V 72-81 9 17.7 +/- 0.4
V 85-285 200 17.8 +/- 0.1
V 545-1034 239 19.4 +/- 0.3
V 1294-11097 512 >19.6
B 292-492 200 >20.2
B 641-7249 731 >20.9
U 616-7044 532 >20.4
UVW1 593-6839 355 >20.4
UVM2 569-6634 355 >20.9
UVW2 521-10892 580 >21.1
These are uncorrected for the estimated Galactic extinction
corresponding to E(B-V) = 0.12
GCN Circular 4827
Subject
GRB 060223A:Xinglong optical limits
Date
2006-02-24T06:43:24Z (19 years ago)
From
W.K. Zheng at NAOC <zwk@bao.ac.cn>
M.Zhai, W.K. Zheng, Y.L. Qiu, J.Y. Wei,J.Y. Hu and J.S Deng, report on behalf of the Xinglong GRB follow-up team:
We observed the field of the GRB 20060223A(Cummings et al.GCN 4813)with the 0.8m telescope at Xinglong Observatory, National Astronomical Observatories,Chinese Academy of Sciences. We began observations on Feb 23.4787 UT, 5.4158 hours after the trigger without any filter. Within 600s exposure image we do not see the optical counterpart(Cummings et al.GCN 4813) down to 19.5 with 3-sigma detection.
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