{
  "submittedHow": "web",
  "createdOn": 1749137022700,
  "eventId": "GRB 250529A",
  "bibcode": "2025GCN.40629....1K",
  "format": "text/plain",
  "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. Lysenko, A. Ridnaia,\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\nS. Barthelmy, J. Cummings, H. Krimm, D. Palmer, A. Tohuvavohu,\nand J. DeLaunay on 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 250529A\n(Fermi-GBM detection: Fermi GBM team, GCN 40567)\nwas detected by Fermi (GBM), Konus-Wind, Swift (BAT),\nand Mars-Odyssey (HEND) at about 13576 s UT (03:46:16).\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 ---------------------------------------------\n  RA(2000), deg                 Dec(2000), deg\n ---------------------------------------------\n Center:\n   18.193 (01h 12m 46s) +58.274 (+58d 16' 25\")\n Corners:\n   21.244 (01h 24m 58s) +56.039 (+56d 02' 19\")\n   14.840 (00h 59m 22s) +60.456 (+60d 27' 22\")\n   14.829 (00h 59m 19s) +60.366 (+60d 21' 57\")\n   21.225 (01h 24m 54s) +55.944 (+55d 56' 37\")\n ---------------------------------------------\nThe error box area is 1252 sq. arcmin, and its maximum\ndimension is 5.6 deg (the minimum one is 4 arcmin).\nThe Sun distance was 48 deg.\n\nThis localization may be improved.\n\nThe IPN localization is consistent with, but reduces the area of,\nthe Fermi-GBM (GCN 40567) localization.\n\nA triangulation map and HEALPix FITS file are posted at\nhttp://www.ioffe.ru/LEA/GRBs/GRB250529_T13600/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.",
  "circularId": 40629,
  "submitter": "Anna Ridnaia at Ioffe Institute <ridnaia@mail.ioffe.ru>",
  "subject": "IPN triangulation of GRB 250529A"
}