GCN Circular 22483
Subject
GRB 180314A: Swift/UVOT Detection
Event
Date
2018-03-14T11:49:54Z (8 years ago)
From
Samantha Oates at MSSL <sro@mssl.ucl.ac.uk>
S. R. Oates (U.Warwick) and P. D'Avanzo (INAF-OAB)
report on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 180314A
167 s after the BAT trigger (D'Avanzo et al., GCN Circ. 22478).
A source consistent with the XRT position
(Osborne et al. GCN Circ. 22480)
is detected in the initial UVOT exposures.
The preliminary UVOT position is:
RA (J2000) = 06:37:03.68 = 99.26535 (deg.)
Dec (J2000) = -24:29:46.0 = -24.49610 (deg.)
with an estimated uncertainty of 0.42 arc sec. (radius, 90% confidence).
Preliminary detections using the UVOT photometric system
(Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the early exposures are:
Filter T_start(s) T_stop(s) Exp(s) Mag
white(FC) 167 317 147 16.28 +/- 0.03
white 606 626 19 17.86 +/- 0.15
v 829 849 19 17.07 +/- 0.25
b 755 774 19 18.09 +/- 0.28
u 326 576 246 16.95 +/- 0.06
w1 705 1131 39 17.98 +/- 0.33
m2 680 1106 58 18.12 +/- 0.35
w2 631 1578 117 18.75 +/- 0.30
The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.08 in the direction of the burst
(Schlegel et al. 1998).
---------------------------------------------
Dr Samantha Oates
Leverhulme Early Career Fellow
Department of Physics
University of Warwick
Coventry
CV4, UK
Tel: +44 (024) 765 23383
Email: s.oates@warwick.ac.uk<mailto:s.oates@warwick.ac.uk>
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