[vsnet-grb-info 14537] GRB 140211A: Swift-XRT and UVOT observations

[GCN Circulars]

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 at 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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