GCN Circular 11389
Subject
GRB 101030A: Swift/UVOT Upper Limits
Event
Date
2010-10-31T04:17:28Z (16 years ago)
From
Erik Hoversten at Swift/Penn State <hoversten@astro.psu.edu>
E. A. Hoversten (PSU) and A. Melandri (INAF-OAB) report
on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB
101030A 73s after the BAT trigger (Melandi et al., GCN 11386).
We do not detect any source at the enhanced Swift XRT position
(Evans et al., GCN 11387). UVOT magnitude 3-sigma upper limits
are reported in the following table:
Filter T_start T_stop Exp(s) Mag (3-sigma upper limit)
-------------------------------------------------------------
white(fc) 73 223 146 > 20.32
white 73 1008 327 > 20.75
v 617 808 38 > 17.89
b 542 735 38 > 18.83
u 285 710 260 > 19.68
uvw1 666 857 38 > 18.39
uvm2 641 833 38 > 18.18
uvw2 592 784 38 > 18.61
The quoted upper limits have not been corrected for the expected
Galactic extinction along the line of sight of E_(B-V) = 0.04
(Schlegel et al. 1998). All photometry is on the UVOT photometric
system described in Poole et al. (2008, MNRAS, 383, 627).