Skip to main content
Testing. You are viewing the public testing version of GCN. For the production version, go to https://gcn.nasa.gov.
New Announcement Feature, Code of Conduct, Circular Revisions. See news and announcements

GCN Circular 18684

Subject
GRB 151210A: Swift/UVOT Upper Limits
Date
2015-12-10T15:12:29Z (8 years ago)
From
Samantha Oates at MSSL <sro@mssl.ucl.ac.uk>
S. R. Oates (IAA-CSIC/UCL-MSSL) and P. A. Evans (U Leicester)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 151210A
153 s after the BAT trigger (Evans et al., GCN Circ. 18678).
No optical afterglow consistent with the optical position
(Han et al., GCN Circ. 18679; Wiseman et al. GCN Circ. 18680)
is detected in the initial UVOT exposures.
Preliminary 3-sigma upper limits using the UVOT photometric system
(Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the first
finding chart (FC) exposure and subsequent exposures are:

Filter         T_start(s)   T_stop(s)      Exp(s)         Mag

white_FC           153          302          147         >21.1
u_FC               311          560          246         >20.5
white              153         7227          805         >22.1
v                  640         7549          442         >20.3
b                  566         7023          510         >20.9
u                  311         6817          736         >20.8
w1                 690         6613          313         >20.4
m2                 840         6407          235         >19.8
w2                 616         7433          490         >20.7

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.12 in the direction of the burst
(Schlegel et al. 1998).
Looking for U.S. government information and services? Visit USA.gov