{
  "bibcode": "2010GCN.10898....1B",
  "body": "V. Beckmann (APC), M. Beck, C. Ferrigno, V. Savchenko, Ievgen Vovk (ISDC), J.\nBorkowski (CAMK/Torun), D. G�tz (CEA/Saclay), S. Mereghetti\n(INAF/IASF-Milano), and A. von Kienlin (MPE) report on behalf of the\nINTEGRAL SPI-ACS GRB team:\n\nGRB 100628A, detected in Swift/BAT data (Immler et al., GCN 10895;\nBarthelmy et al., GCN 10896), is detectable also in the data of the  \nSPI Anti-Coincidence System (ACS) on-board INTEGRAL. The SPI-ACS light  \ncurve shows the peak of the burst at 2010-06-28T08:16:41 with a  \nmaximum count-rate of ~600\ncounts/50msec. The duration of the GRB is about 0.05 seconds.\n\nThe SPI-ACS light curves are available (both as images and data files)\nat http://isdc.unige.ch/Soft/ibas/ibas_acs_web.cgi\n\nThe light curves, binned at 50 ms, are derived from 91 independent\ndetectors with different lower energy thresholds (mainly between 50 keV\nand 150 keV) and an upper threshold at about 100 MeV. The ACS response\nvaries as a function of the GRB incident angle. For these reasons we\ncaution that the count rates cannot be easily translated into physical\nflux units. It is not possible to localize a burst based on the SPI-ACS data.\n\n----------------------------------------------------------------\nThis message was sent using IMP, the Internet Messaging Program.",
  "circularId": 10898,
  "createdOn": 1277750754000,
  "email": "beckmann@apc.univ-paris7.fr",
  "subject": "GRB 100628A: INTEGRAL SPI-ACS light curve",
  "submitter": "Volker Beckmann at APC  <beckmann@apc.univ-paris7.fr>",
  "eventId": "GRB 100628A"
}