{
  "bibcode": "2024GCN.37455....1K",
  "circularId": 37455,
  "format": "text/plain",
  "eventId": "GRB 240905B",
  "subject": "IPN triangulation of GRB 240905B (short)",
  "submitter": "Dmitry Svinkin at Ioffe Institute <svinkin@mail.ioffe.ru>",
  "body": "A.S. Kozyrev, D.V. Golovin, M.L. Litvak, I.G. Mitrofanov, and A.B. Sanin\non behalf of the MGNS/BepiColombo team,\n\nJ. Benkhoff on behalf of the BepiColombo team,\n\nD. Svinkin, D. Frederiks, A. Ridnaia, A. Lysenko,\nand T. Cline on behalf of the Konus-Wind team,\n\nA. Goldstein, M. S. Briggs, C. Wilson-Hodge,\nand E. Burns on behalf of the Fermi GBM team,\n\nE. Bozzo and C. Ferrigno, on behalf of the INTEGRAL SPI-ACS GRB team,\n\nand\n\nG. Waratkar, V. Jethwani, J.Joshi, V. Bhalerao, D. Bhattacharya,\nand S. Vadawale, on behalf of the Astrosat-CZTI team, report:\n\nThe short-duration GRB 240905B\n(Fermi-GBM detection: The Fermi GBM team, GCN 37389;\nDalessi et al., GCN 37436;\nAstroSat-CZTI detection: Joshi et al., GCN 37391;\nFermi-LAT detection: Gupta et al., GCN 37418)\nwas detected by Fermi (GBM and LAT), Konus-Wind, INTEGRAL (SPI-ACS),\nAstrosat (CZTI), and BepiColombo (MGNS) at about 16036 s UT (04:27:16).\n\nWe have triangulated it to a preliminary, 3 sigma error box\nwhose coordinates are:\n---------------------------------------------\n  RA(2000), deg                 Dec(2000), deg\n ---------------------------------------------\n Center:\n  267.922 (17h 51m 41s) +14.240 (+14d 14' 24\")\n Corners:\n  267.264 (17h 49m 03s) +12.544 (+12d 32' 40\")\n  267.181 (17h 48m 43s) +12.565 (+12d 33' 54\")\n  268.618 (17h 54m 28s) +15.927 (+15d 55' 37\")\n  268.703 (17h 54m 49s) +15.906 (+15d 54' 21\")\n ---------------------------------------------\nThe error box area is 1087 sq. arcmin, and its maximum\ndimension is 3.65 deg (the minimum one is 5 arcmin).\nThe Sun distance was 100 deg.\n\nThis localization may be improved.\n\nThe IPN localization is consistent with, but reduces the area of,\nthe Fermi-LAT localization.\n\nSwift-XRT reported six afterglow candidates for this burst (Source 1-6, Brivio et. al.,  GCN 37421). Three candidates (Sources 1, 2, and 6) are inside the IPN box.\n\nA triangulation map and HEALPix FITS file are posted at\nhttp://www.ioffe.ru/LEA/GRBs/GRB240905_T16038/IPN/\nThe HEALPix triangulation map is the multi-order HEALPix in units of\nprobability density.\n\nThe Konus-Wind time history and spectrum will be given\nin a forthcoming GCN Circular.\n",
  "createdOn": 1726068271308,
  "submittedHow": "web"
}