GCN Circular 11095
Subject
Swift/UVOT observations of GRB100814A
Date
2010-08-14T15:26:23Z (14 years ago)
From
Patricia Schady at MPE/Swift <msslba@googlemail.com>
M. De Pasquale (MSSL-UCL) and C.J. Saxton (MSSL-UCL)
report on the behalf of the Swift UVOT team:
��The Swift/UVOT began settled observations of the field of
GRB 100814A 153 s after the BAT trigger ��(Beardmore et
al. 2010, GCN Circ. 11087) with a finding chart in the u
filter. We detect the optical afterglow in all filters except
uvw2. The refined UVOT position is
��RA ��(J2000) = 01h 29m 53.61s = 22.47338
��Dec (J2000) = -17d 59m 43.6s = -17.99545
with an estimated uncertainty of 0.6 arcsec (radius, 90% confidence,
statistical + systematic). This is about 1.5 arcsec north of the
UVOT-enhanced XRT position (Beardmore et al. 2010, GCN Circ.
11092).
��Preliminary magnitudes, and 3-sigma upper limits for detecting a
source in the finding charts and in co-added images are
Filter �� �� ��T_start �� T_stop �� ��Exp(s) �� �� ��Mag �� Err
---------------------------------------------------------------------
�� ��u (fc) �� �� ��153 �� �� ��403 �� �� �� 246 �� �� 16.80 0.06
�� ��v �� �� �� �� �� 458 �� ���� 627 �� �� �� ��39 �� �� ��17.91 0.32
�� ��b �� �� �� �� �� 408 �� ���� 721 �� �� �� ��53 �� �� ��21.22 0.20
�� ��u �� �� �� �� �� 153 �� ���� 701 �� �� ��285 �� �� ��16.84 0.06
��uvw1 �� �� �� ��507 �� �� ��676 �� �� �� ��39 �� �� �� 17.33 0.20
��uvm2 �� �� �� 483 �� �� 651 �� �� �� 39 �� �� ��17.86 0.31
��uvw2 �� �� �� ��434 �� �� 602 �� �� �� 39 �� ��>18.52 ��3-sigma UL
��white �� �� ��3858 �� �� 4211 �� �� �� 344 �� �� ��18.63 0.07
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��The quoted magnitudes and upper limits have not been corrected
for the expected Galactic extinction along the line of sight
corresponding to a reddening of E_{B-V} = 0.02 mag (Schlegel, et al.,
1998, ApJS, 500, 525). ��All photometry is on the UVOT photometry
system described in Poole et al. (2008, MNRAS, 383, 627).