{
  "circularId": 35311,
  "subject": "IPN triangulation of GRB 231129C",
  "submittedHow": "email-legacy",
  "bibcode": "2023GCN.35311....1K",
  "eventId": "GRB 231129C",
  "createdOn": 1702235036521,
  "body": "A.S. Kozyrev, D.V. Golovin, M.L. Litvak, I.G. Mitrofanov, and A.B. Sanin\non behalf of the MGNS/BepiColombo and HEND/Mars Odyssey teams,\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\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 very bright, long-duration GRB 231129C\n(Fermi-GBM detection: The Fermi GBM team, GCN Circ. 35217;\nSharma et al., GCN Circ. 35221, 35227;\nBALROG localization: Preis et al., GCN Circ. 35222;\nMAXI-GSC detection: Kawakubo et al., GCN Circ. 35223;\nCALET-CGBM detection: Shimizu et al., GCN Circ. 35228;\nAstroSat-CZTI detection: Waratkar et al., GCN Circ. 35230;\nGECAM-B detection: Zheng and Xiong, GCN Circ. 35231;\nGlowbug detection: Cheung et al., GCN Circ. 35235;\nGRBAlpha detection: Dafcikova et al., GCN Circ. 35236;\nFermi-LAT detection: Arimoto et al., GCN Circ. 35238;\nSwift-BAT/GUANO detection: DeLaunay et al., GCN Circ. 35242;\nAGILE detection: Panebianco et al., GCN Circ. 35244;\nKonus-Wind detection: Lysenko et al., GCN Circ. 35256;\nASIM-MXGS detection: Marisaldi et al., GCN Circ. 35288)\nwas detected by Fermi (GBM, LAT), ISS (Glowbug, CALET-CGBM),\nAstroSat (CZTI), GECAM-B (GRD), GRBAlpha, AGILE (MCAL, AC),\nSwift (BAT), Konus-Wind, INTEGRAL (SPI-ACS),\nGRBAlpha, Mars-Odyssey (HEND), and BebiColombo (MGNS)\nat about 69018 s UT (19:10:18).\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    9.975 (00h 39m 54s) -81.812 (-81d 48' 43\")\n Corners:\n    4.821 (00h 19m 17s) -80.799 (-80d 47' 56\")\n   16.263 (01h 05m 03s) -82.675 (-82d 40' 29\")\n   16.443 (01h 05m 46s) -82.746 (-82d 44' 45\")\n    4.881 (00h 19m 31s) -80.873 (-80d 52' 23\")\n ---------------------------------------------\nThe error box area is 322 sq. arcmin, and its maximum\ndimension is 2.5 deg (the minimum one is 2.2 arcmin).\nThe Sun distance was 73 deg.\n\nThis localization may be improved.\n\nThe IPN localization is consistent with, but reduces the area of,\nthe Fermi-GBM/LAT and ASIM localizations.\n\nThe Swift-XRT reported Source 2 (GCN 35234, 35251) is inside the IPN box, supporting that the source is the afterglow of GRB 231129C.\n\nA triangulation map and HEALPix FITS file are posted at\nhttp://www.ioffe.ru/LEA/GRBs/GRB231129_T69016/IPN/\n\n",
  "submitter": "Dmitry Svinkin at Ioffe Institute <svinkin@mail.ioffe.ru>"
}