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GCN Circular 15787

Subject

GRB 140206A: Swift/UVOT optical detection

Date

2014-02-06T11:03:15Z (10 years ago)

From

Samantha Oates at MSSL <sro@mssl.ucl.ac.uk>

S. R. Oates (MSSL-UCL) and A. Y. Lien (NASA/GSFC/ORAU) report on behalf 
of the Swift/UVOT team:

UVOT took a finding chart exposure of 150 seconds with the White filter
starting 54 seconds after the BAT trigger. There is a candidate afterglow in
the finding chart image:

     RA (J2000)   9:41:20.24 = 145.33433 
    Dec (J2000)  +66:45:38.5 = 66.76069  

with an estimated uncertainty of 0.5 arcsec (radius, 90% confidence). 
This position is consistent with the XRT position (Lien et al., GCN 15784Not found
 
 
) 
and the optical afterglow position reported by Oksanen et al (GCN 15786Not found
 
 
). 
The estimated magnitude is 15.76 with a 1-sigma error of about  0.03. 
No correction has been made for the expected extinction corresponding 
to E(B-V) of 0.12.