TITLE:   GCN CIRCULAR
NUMBER:  6190
SUBJECT: GRB 070311: REM candidate afterglow
DATE:    07/03/11 03:09:52 GMT
FROM:    Stefano Covino at Brera Astronomical Observatory  <stefano.covino@poste.it>

S. Covino, L.A. Antonelli, L. Calzoletti, S. Campana, G. Chincarini,  
M.L. Conciatore, S. Cutini, P. D'Avanzo, V. D'Elia, F. Dalessio, F.  
Fiore, D. Fugazza, P. Goldoni, D. Guetta, C. Guidorzi, G.L. Israel,  
D. Malesani, A. Melandri, E. Meurs, S. Piranomonte, D. Rizzuto, L.  
Stella, G. Stratta, G. Tagliaferri, G. Tosti, V. Testa, S. Vergani,  
V. Vitali report on behalf of the REM team:

We observed the field of the GRB 070311 (Mereghetti et al. GCN 6189)  
with the robotic 60-cm REM telescope located at La Silla (Chile). A  
set of observations was performed automatically in the optical and  
near infrared filters (V, R, I and J, H, K, z) starting on 2007 March  
11 at 01:53:45 UT, 43 s after the Integral trigger and 51 s after the  
GRB  time.

Preliminary analysis of the whole dataset shows a possible transient  
source at coordinate:

RA: 05:50:08.21
DEC: 03:22:30.3

The approximate magnitude about 3 minutes after the burst time was H  
~ 14.3.

Further observations are in progress.

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