GCN Circular 9607
Subject
GRB 090702: UVOT upper limits
Event
Date
2009-07-03T11:13:55Z (17 years ago)
From
Samantha Oates at MSSL <sro@mssl.ucl.ac.uk>
S. R. Oates (MSSL-UCL) and D. M. Palmer (LANL) report on behalf of the
Swift/UVOT team:
The Swift/UVOT began observing the field of INTEGRAL GRB 090702,
3.5hrs after the
INTEGRAL trigger (Paizis et al., GCN 9603). We do not detect any
source at the
Swift XRT position (Sbarufatti et al. GCN 9604).
The 3-sigma upper limits for the finding chart exposure is:
Filter T_start(s) T_stop(s) Exp(s) Mag (3-sigma upper limit)
-------------------------------------------------------------
white 14080 20350 971 > 22.72
v 14646 20964 1126 > 21.20
b 13516 25451 1753 > 22.37
u 12951 24855 1796 > 21.89
-------------------------------------------------------------
The quoted upper limits have not been corrected for the expected
Galactic extinction along the line of sight of E_(B-V) = 0.039 mag.
All photometry is on the UVOT photometric system described in Poole et
al. (2008, MNRAS, 383, 627).