{
  "bibcode": "2023GCN.33413....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, A. Lysenko, A. Ridnaia on behalf of the IPN,\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 230307A\n(Fermi-GBM detection: the Fermi GBM team, GCN Circ. 33405;\nDalessi, GCN Circ. 33407; Dalessi and Roberts, GCN Circ. 33411;\nGECAM detection: Xiong et al., GCN Circ. 33406;\nSolar Orbiter STIX detection: Xiao and Krucker, GCN Circ. 33410;\nAGILE-MCAL detection: Casentini et al., GCN Circ. 33412)\nhas been detected by Fermi(GBM trigger 699896651), GECAM,\nINTEGRAL (SPI-ACS), Swift (BAT), Solar Orbiter (STIX), AGILE (MCAL),\nand Mars-Odyssey (HEND), so far, at about 56647 s UT (15:44:07).\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   59.233       -75.226\n  Corners:\n   70.905       -76.077\n   38.996       -71.948\n   38.440       -72.064\n   73.041       -76.146\n  --------------------------------\nThe error box area is 1.948 sq. deg, and its maximum\ndimension is 9.6 deg (the minimum one is 11.6 arcmin).\nThe Sun distance was 100 deg.\n\nThis box may be improved.\n\nThe IPN localization is consistent with, but reduces the area of,\nthe Fermi-GBM final localization (GCN 33407).\n\nA triangulation map and HEALPix FITS file are posted at\nhttp://www.ioffe.ru/LEA/GRBs/GRB230307_T56646/IPN",
  "circularId": 33413,
  "createdOn": 1678232006000,
  "email": "svinkin@mail.ioffe.ru",
  "subject": "IPN triangulation of GRB 230307A (long/very bright)",
  "submitter": "Dmitry Svinkin at Ioffe Institute  <svinkin@mail.ioffe.ru>",
  "eventId": "GRB 230307A"
}