{
  "bibcode": "2009GCN..9700....1G",
  "body": "S. Golenetskii, R. Aptekar, E. Mazets, V. Pal'shin, D. Frederiks, and T.\nCline on behalf of the Konus-Wind team,\n\nA. von Kienlin, A. Rau, and K. Hurley on behalf of the\nINTEGRAL SPI-ACS GRB team,\n\nM. Marisaldi, F. Fuschino, C. Labanti, M. Galli, G. Di Cocco\non behalf of the AGILE team,\n\nK. Yamaoka, M. Ohno, Y. Fukazawa, T. Takahashi, M. Tashiro, Y. Terada,\nT. Murakami, K. Makishima, and Y. Hanabata on behalf of the Suzaku-WAM \nteam, and\n\nV. Connaughton, M. Briggs, and C. Meegan, on behalf of the Fermi GBM\nteam, report:\n\nSuzaku-WAM, Konus-Wind, AGILE-MCAL, and INTEGRAL (SPI-ACS) observed the \nbright GRB 090720B at about 17:02:57 UT (the Fermi/GBM trigger \n269802178/090720710: Burgess et al. GCN 9698).\nWe have triangulated this burst to a Konus-GBM annulus centered at \nRA(2000)=274.434 (18h 17m 44s)  Dec(2000)=-23.965 (-23d 57' 54\"), whose \nradius is  60.824 +/- 0.031 (3 sigma).\nTriangulation of the Konus-SPI-ACS gives an annulus centered\nat RA(2000)=274.426 (18h 17m 42s)  Dec(2000)=-18.772 (-18d 46' 19\"), \nwhose radius is  64.910 +/- 0.252 (3 sigma).\n\nTogether, these 2 annuli yield a 3-sigma error box whose center and \ncorners are:\n-----------------------------------------------\n      RA(2000), deg              Dec(2000), deg\n-----------------------------------------------\nCenter:\n   201.609 (13h 26m 26s)   -55.000 (-55d 00' 01\")\nCorners:\n   201.763 (13h 27m 03s)   -59.798 (-59d 47' 54\")\n   201.580 (13h 26m 19s)   -58.693 (-58d 41' 36\")\n   201.793 (13h 27m 10s)   -50.725 (-50d 43' 29\")\n   201.823 (13h 27m 17s)   -51.627 (-51d 37' 36\")\n-----------------------------------------------\n\nThe error box area is 0.500 sq. deg and may be refined.\n\nThe GBM on-ground location (Burgess et al. GCN 9698) is consistent with \nthe IPN box.\n\nA map is posted at http://www.ioffe.ru/LEA/GRBs/GRB090720_T61379/IPN/\nshowing GBM contours (statistical) and best-fit position (star),\nand the IPN annuli (solid lines with centers dot-dashed).\n\nThis map will also be posted at http://ssl.berkeley.edu/ipn3/090720B .\n\nThe IPN localization may be improved.",
  "circularId": 9700,
  "createdOn": 1248278883000,
  "email": "val@mail.ioffe.ru",
  "subject": "IPN Triangulation of bright GRB 090720B",
  "submitter": "Valentin Pal'shin at Ioffe Inst  <val@mail.ioffe.ru>",
  "eventId": "GRB 090720B"
}