GCN Circular 7198
Subject
UVOT detection of GRB080120
Date
2008-01-21T11:50:51Z (17 years ago)
From
Patricia Schady at MSSL/Swift <ps@mssl.ucl.ac.uk>
P. Schady (MSSL-UCL) and B. Sbarufatti (INAF-IASF PA) report on behalf of
the Swift UVOT team:
Swift UVOT started a ToO observation of the INTEGRAL burst GRB080120 at
2008-01-20T19:50 UT, ~2.4hrs after the INTEGRAL trigger (Mereghetti et
al., GCN 7194). Observations were taken in the white and v-band only. A
new source is detected within the XRT error circle (Sbarufatti & Mangano,
GCN7195), in co-added images in both these filters at
RA: 15:01:03.276
DEC: -10:52:29.79
with an uncertainty of 0.6 arcsec (90% confidence). This is consistent
with the position reported by Kruehler et al. (GCN 7197). The source is
seen to decay in the white band and has the following magnitudes and
3-sigma upper limits (in the UVOT photometric system,Breeveld et al., GCN
Circ. 6614)
Filter Tstart Exp Magnitude
(s) (s)
white 9257 401 21.45 +/- 0.39
white 14524 679 > 22.08
v 8490 746 20.45 +/- 0.41
v 13232 126 20.53 +/- 0.33
The values quoted above are not corrected for the expected non-negligible
Galactic extinction corresponding to a reddening of E(B-V) = 0.10 mag in the
direction of the burst (Schlegel et al. 1998).