[vsnet-grb-info 13025] GRB 130408A: Liverpool Telescope Optical candidate detection

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  14362
SUBJECT: GRB 130408A: Liverpool Telescope Optical candidate detection
DATE:    13/04/08 22:57:31 GMT
FROM:    Andrea Melandri at INAF-OAB  <andrea.melandri at brera.inaf.it>

A. Melandri (INAF-OAB), J. Japelj (U. Ljubljana), F.J. Virgili(LJMU),  
C.G. Mundell (LJMU) report:

The 2-m Liverpool Telescope robotically followed up GRB130408A (Swift  
trigger 553132, Lien et al., GCN 14361) 19.42 min after the GRB  
trigger time observing with SLOAN-gri filters.

The automatic LT-TRAP procedure detected an uncatalogued fading source  
candidate at:

RA=08:57:37.30
Dec=-32:21:38.90    (J2000)

with magnitude R~16.5 mag (vs USNOB1) ~20 min after the burst trigger.  
The object is clearly fading in all filters and we suggest this is the  
optical afterglow of GRB130408A.

Observations and analysis are ongoing.