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GCN Circular 5640

Subject

GRB 060927 optical limit

Date

2006-09-27T23:03:03Z (18 years ago)

From

Graziella Pizzichini at IASF/CNR,Bologna <pizzichini@iasfbo.inaf.it>

G. Greco, C. Bartolini, A. Guarnieri, A. Piccioni (Bologna
      University),  F. Terra, Second University of Roma "Tor Vergata",
      D. Nanni (INAF/OAR and Second University of Roma "Tor Vergata"),
  S. Galleti, R. Gualandi (INAF Bologna) and G. Pizzichini (INAF/IASF
  Bologna) report:

  Using the 152 cm Loiano telescope equipped with the BFOSC camera
  system, we  obtained three 20 min. Rc-band images of the field of
  GRB060927 (Barbier et al., GCN 5627Not found
 
 
), starting at Sept. 27.763 ,
  27.779 and 27.795 respectively, seeing 2.2 arcsec.
  In our co-added images we do not detect the OT reported by Schaefer,
  Yost and Yuan  (GCN 5629Not found
 
 
). Our 3 sigma upper limit is Rc  = 21.7    .