{
  "bibcode": "2008GCN..7502....1K",
  "body": "S. Karpov, G. Beskin (SAO RAS, Russia), S. Bondar (RIPI, Russia), C. Bartolini,\nG. Greco, A. Guarnieri, A. Piccioni (Astronomy Department of Bologna\nUniversity, Italy), D. Nanni, F. Terra (Second University of Roma \"Tor\nVergata\", Italy), E. Molinari, G. Chincarini, F.M. Zerbi, S. Covino, V. Testa\n(Osservatorio Astronomico di Brera, Italy), G. Tosti (Universita di Perugia,\nItaly), F. Vitali, L.A. Antonelli (Osservatorio Astronomico di Roma, Italy),\nP. Conconi, G.  Cutispoto (Osservatorio Astronomico di Catania, Italy),\nG. Malaspina (Osservatorio Astronomico di Brera, Italy), L. Nicastro (Istituto\ndi Astrofisica Spaziale e Fisica Cosmica, Palermo, Italy), E. Palazzi (Istituto\ndi Astrofisica Spaziale e Fisica Cosmica, Bologna, Italy), E. Meurs (Dunsink\nObservatory, Ireland), P.  Goldoni (Observatori Astronomic - Universitat de\nValencia Edificio de Institutos de Investigacion, Spain)\n\nreport on behalf of TORTOREM team:\n\nFollowing GCN 7452 we publish a preliminary light curve of GRB 080319b with\nreduced temporal resolution (10 frames time binning, 1.3 seconds effective\nexposure, no gaps between frames). The photometry is performed in instrumental\nsystem and calibrated towards the V magnitudes of nearby Tycho2 stars. The\nlight curve is available online at\n\nhttp://vo.astronet.ru/~karpov/grb080319b_lc_10.gif\n\nThe light curve shows fast (~5 seconds) uprise towards the peak V=5.5 at T+23,\ncomplex multi-peak structure till T+50 and featureless decay then. In total,\nthe transient has been visible for ~65 seconds; 6 seconds in the T+30 - T+36\ninterval are currently excluded from the analysis due to repointing of REM\ntelescope at that time.\n\nThe light curve is consistent with the one published by Pi of the Sky (Cwiok et\nal, GCN 7445).\n\nThe video sequence of the data is available at\n\nhttp://vo.astronet.ru/~karpov/grb080319b.avi\n\nand with reduced temporal resolution at\n\nhttp://vo.astronet.ru/~karpov/grb080319b_lowres.avi\n\nThe results of analysis of full-resolution (0.13s exposure) data will be\npublished later.",
  "circularId": 7502,
  "createdOn": 1206129257000,
  "email": "karpov@sao.ru",
  "subject": "GRB 080319B: TORTORA light curve",
  "submitter": "Sergey Karpov at SAO RAS  <karpov@sao.ru>",
  "eventId": "GRB 080319B"
}