[vsnet-grb-info 4066] GRB 061121: flattening of the decay

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  5877
SUBJECT: GRB 061121: flattening of the decay
DATE:    06/11/28 22:06:09 GMT
FROM:    Daniele Malesani at Niels Bohr Inst,Dark Cosmology Center  <malesani at astro.ku.dk>

D. Malesani, J. Hjorth, D. Xu, M.D. Stritzinger, D. Watson, J.P.U. 
Fynbo, (NBI-Dark), C. Henriksen, K. Holjem, T. Pursimo, D. Sharapov, H. 
Uthas (NOT), report:

We have observed the afterglow of GRB 061121 (Page et al., GCN 5823) at 
several epochs with NOT + ALFOSC. Starting from 2006 Nov. 25 on, the 
R-band light curve significantly flattened with respect to earlier 
observations (e.g. Halpern et al., GCN 5847; Efimov et al., GCN 5870). 
This is likely due to the presence of a relatively bright underlying 
host galaxy. Some hints of extension are seen in our images taken during 
the night of Nov 27, with a seeing of 0.9".