TITLE:   GCN CIRCULAR
NUMBER:  15851
SUBJECT: GRB 140211A: Swift-XRT and UVOT observations
DATE:    14/02/16 18:51:10 GMT
FROM:    Valerio D'Elia at ASDC  <delia@asdc.asi.it>

M. De Pasquale (MSSL-UCL), V. D'Elia (ASDC),  L. Izzo (Uroma/ICRA) and  
J. R. Cummings (NASA/UMBC) report on behalf of the Swift-XRT team:


We have analysed 2.7 ks of XRT data for GRB 140211A (Cummings� et al.  
GCN Circ. 15816),� from 298.7 ks to 385.2 ks after the BAT trigger.  
The data are entirely in Photon Counting (PC) mode. The refined XRT  
position is RA, Dec = 124.22331, +20.2432 which is equivalent to:

RA (J2000): 08 16 53.59
Dec(J2000): +20 14 35.5

with an uncertainty of 4.4 arcsec (radius, 90% confidence). We cannot  
determine at the present time whether the source is fading.


The results of the XRT-team automatic analysis are available at
http://www.swift.ac.uk/xrt_products/00586289.

UVOT performed observations of GRB140211A in UVM2 and UVW1. At the  
position of the XRT source, no counterpart is detected in these  
filters in summed exposures. Preliminary 3-sigma upper limits using  
the UVOT photometric system (Breeveld et al 2011, AIP Conf. Proc.  
1358, 373) are

Filter� � �T_start (s)� � �T_Stop (s)� � �Exp (s)� � �Mag
um2� � � �298690� � � � 298860� � � � 167� � � � >19.5
uw1� � � � 338330� � � �385245� � � 2438� � � � >21.3

No correction has been made for extinction corresponding to  
E(B-V)=0.04 (Schlegel et al 1998).

This circular is an official product of the Swift team.

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