{
  "bibcode": "2009GCN..9277....1P",
  "body": "V. Pal'shin, S. Golenetskii, R.Aptekar, D. Frederiks, E. Mazets,\nP. Oleynik, D. Svinkin, M. Ulanov on behalf of the Konus-Wind and \nKonus-RF teams,\n\nK. Hurley and T. Cline, on behalf of the Mars Odyssey\nand Konus GRB teams,\n\nW. Boynton, C. Fellows, K. Harshman, H. Enos, and R. Starr, on\nbehalf of the GRS-Odyssey GRB team,\n\nI. G. Mitrofanov, D. Golovin, M. L. Litvak, and A. B. Sanin,\non behalf of the HEND-Odyssey GRB team,\n\nM. Marisaldi, G. Di Cocco, F. Fuschino, M. Galli, C. Labanti,\non behalf of the AGILE MCAL team,\n\nE. Del Monte, E. Costa, I. Donnarumma, Y. Evangelista, M. Feroci,\nI. Lapshov, F. Lazzarotto, L. Pacciani, M. Rapisarda, P. Soffitta,\non behalf the SuperAGILE team,\n\nA. von Kienlin, G. Lichti, and A. Rau, and K. Hurley on behalf of the\nINTEGRAL SPI-ACS team report:\n\nKonus-Wind, Konus-RF, Mars-Odyssey (GRS and HEND), SuperAGILE, \nAGILE-MCAL, and INTEGRAL-SPI-ACS observed the bright GRB 090427 at about \n84387 s UT (23:26:27). The burst was outside the coded field of view of \nthe SuperAGILE.\n\nThe burst light curve shows a multipeaked structure with a duration of\n~15 sec.\n\nWe have triangulated it to the following 3-sigma error box:\n-----------------------------------------------\n    RA(2000), deg              Dec(2000), deg\n-----------------------------------------------\nCenter:\n  235.931 (15h 43m 43s)   -13.498 (-13d 29' 53\")\nCorners:\n  236.026 (15h 44m 06s)   -12.481 (-12d 28' 52\")\n  236.183 (15h 44m 44s)   -12.470 (-12d 28' 12\")\n  235.820 (15h 43m 17s)   -14.521 (-14d 31' 16\")\n  235.658 (15h 42m 38s)   -14.542 (-14d 32' 30\")\n-----------------------------------------------\n\nThe error box area is 0.313 sq. deg.\nThis error box may be improved.\n\nPreliminary analysis of the Konus-Wind data yields\na burst fluence of ~1x10^-4 erg/cm2 (in the 20 keV - 8 MeV range),\nand an Epeak of the time-integrated spectrum of ~750 keV.\n\nIPN triangulation map is available at \nhttp://www.ioffe.ru/LEA/GRBs/GRB090427_T84392/IPN/",
  "circularId": 9277,
  "createdOn": 1240916420000,
  "email": "val@mail.ioffe.ru",
  "subject": "IPN triangulation of very bright GRB 090427",
  "submitter": "Valentin Pal'shin at Ioffe Inst  <val@mail.ioffe.ru>",
  "eventId": "GRB 090427"
}