TITLE: GCN CIRCULAR NUMBER: 38300 SUBJECT: IPN triangulation of GRB 241117A DATE: 24/11/22 17:46:13 GMT FROM: Dmitry Svinkin at Ioffe Institute <svinkin@mail.ioffe.ru> A.S. Kozyrev, D.V. Golovin, M.L. Litvak, I.G. Mitrofanov, and A.B. Sanin on behalf of the HEND/Mars Odyssey team, D. Svinkin, D. Frederiks, A. Lysenko, A. Ridnaia, and T. Cline on behalf of the Konus-Wind team, A. Goldstein, M. S. Briggs, C. Wilson-Hodge, and E. Burns on behalf of the Fermi GBM team, E. Bozzo and C. Ferrigno, on behalf of the INTEGRAL SPI-ACS GRB team, S. Barthelmy, J. Cummings, H. Krimm, D. Palmer, and A. Tohuvavohu on behalf of the Swift-BAT team, and W. Boynton, C. Fellows, K. Harshman, H. Enos, R. Starr, and A.S. Gardner on on behalf of the GRS-Odyssey GRB team, report: The long-duration (or possible short GRB with extended emission) GRB 241117A (Fermi-GBM detection: The Fermi GBM team, GCN 38258; Scotton and Meegan, GCN 38265; SVOM-GRM detection: Wang et al., GCN 38266; Swift-BAT/GUANO detection: Ronchini et al., GCN 38273) was detected by Fermi (GBM trigger 753505248), Konus-Wind, SVOM (GRM), INTEGRAL (SPI-ACS), Swift (BAT), and Mars-Odyssey (HEND), at about 10843 s UT (03:00:43). The burst was outside the coded field of view of the BAT. We have triangulated it to a preliminary, 3 sigma error box whose coordinates are: --------------------------------------------- RA(2000), deg Dec(2000), deg --------------------------------------------- Center: 2.489 (00h 09m 57s) +16.049 (+16d 02' 55") Corners: 2.124 (00h 08m 30s) +16.504 (+16d 30' 14") 1.993 (00h 07m 58s) +16.881 (+16d 52' 52") 2.859 (00h 11m 26s) +15.576 (+15d 34' 33") 3.003 (00h 12m 01s) +15.166 (+15d 09' 59") --------------------------------------------- The error box area is 557 sq. arcmin, and its maximum dimension is 1.97 deg (the minimum one is 6 arcmin). The Sun distance was 130 deg. This localization may be improved. A triangulation map and HEALPix FITS file are posted at http://www.ioffe.ru/LEA/GRBs/GRB241117_T10845/IPN The HEALPix triangulation map is the multi-order HEALPix in units of probability density. The Konus-Wind time history and spectrum will be given in a forthcoming GCN Circular. View this GCN Circular online at https://gcn.nasa.gov/circulars/38300. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...