{
  "eventId": "GRB 240504A",
  "subject": "IPN triangulation of GRB 240504A",
  "circularId": 36407,
  "createdOn": 1715099364798,
  "submittedHow": "email-legacy",
  "bibcode": "2024GCN.36407....1K",
  "body": "A.S. Kozyrev, D.V. Golovin, M.L. Litvak, I.G. Mitrofanov, and A.B. Sanin\non behalf of the HEND/Mars Odyssey 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\nS. Barthelmy, J. Cummings, H. Krimm, D. Palmer, and A. Tohuvavohu\non behalf of the Swift-BAT team,\n\nand\n\nW. Boynton, C. Fellows, K. Harshman, H. Enos, R. Starr,\nand A.S. Gardner on on behalf of the GRS-Odyssey GRB team,\nreport:\n\nThe long-duration GRB 240504A\n(Fermi-GBM detection: The Fermi GBM team, GCN 36387;\nBALROG localization: Preis et al., GCN 36388;\nSwift-BAT/GUANO detection: Ronchini et al., GCN 36401)\nwas detected by Fermi (GBM trigger 736492377), Konus-Wind,\nINTEGRAL (SPI-ACS), Swift (BAT), and Mars-Odyssey (HEND)\nat about 18773 s UT (05:12:53).\nThe burst was outside the coded field of view of the BAT.\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   64.767 (04h 19m 04s) -10.087 (-10d 05' 13\")\n Corners:\n   64.587 (04h 18m 21s) -11.558 (-11d 33' 29\")\n   64.659 (04h 18m 38s) -11.560 (-11d 33' 36\")\n   64.926 (04h 19m 42s)  -8.615 ( -8d 36' 53\")\n   64.854 (04h 19m 25s)  -8.613 ( -8d 36' 47\")\n ---------------------------------------------\nThe error box area is 756 sq. arcmin, and its maximum\ndimension is 2.96 deg (the minimum one is 4.3 arcmin).\nThe Sun distance was 35 deg.\n\nThe IPN localization is consistent with, but reduces the area of,\nthe Fermi-GBM final and BALROG localizations.\n\nThis localization may be improved.\n\nA triangulation map and HEALPix FITS file are posted at\nhttp://www.ioffe.ru/LEA/GRBs/GRB240504_T18769/IPN/\n\nThe Konus-Wind time history and spectrum will be given\nin a forthcoming GCN Circular.\n\n",
  "submitter": "Dmitry Svinkin at Ioffe Institute <svinkin@mail.ioffe.ru>"
}