{
  "bibcode": "2006GCN..5372....1G",
  "body": "A. Guarnieri, C. Bartolini, G. Beskin, S. Bondar, G. Greco, S. Karpov, \nD. Nanni, A. Piccioni, F. Terra, E. Molinari, G. Chincarini, F. M. Zerbi, \nS. Covino, V. Testa, G. Tosti, F. Vitali, L. A. Antonelli, P. Conconi, \nG. Cutispoto, G. Malaspina, L. Nicastro, E. Palazzi, E. Meurs, P. Goldoni,\non behalf of the TORTOREM Team report:\n\nThe field of GRB 060719 (Stamatikos et al. GCN 5339) was observed\nby the TORTORA (Telescopio Ottimizzato per la Ricerca di Transienti\nOttici RApidi) wide-field fast camera (12 cm diameter, 20x25 deg FOV)\nmounted on REM robotic 60-cm telescope located at La Silla (Chile). \nThe burst was outside the camera field of view. The system was repointed\nand the TORTORA began to acquire frames at 06:51:36 UTC (59 sec after trigger)\nwith 7.5 Hz frame frequency (0.128 exposure).\nThe summation of 100 frames with 12.8 s. effective exposure did not reveal\nany source down to the B = 12.4 mag (3-sigma).\nWe performed the Fourier analysis of 15 min data set to search for the\nperiodic signal at the GRB position. \nThe upper limit for the amplitude of sinusoidal variability is \nB=16.5 (1-sigma) over the 0.01 - 3.5 Hz range.\n\nThe message may be cited.",
  "circularId": 5372,
  "createdOn": 1154248197000,
  "email": "corrado.bartolini@unibo.it",
  "subject": "GRB 060719: TORTOREM optical upper limits",
  "submitter": "Corrado Bartolini at Universita di Bologna  <corrado.bartolini@unibo.it>",
  "eventId": "GRB 060719"
}