TITLE: GCN CIRCULAR NUMBER: 35554 SUBJECT: IPN triangulation of GRB 240112A (long) DATE: 24/01/17 14:46:49 GMT FROM: Anna Ridnaia at Ioffe Institute <ridnaia@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, A. Ridnaia, D. Frederiks, D. Svinkin, A. Lysenko, and T. Cline on behalf of the Konus-Wind team, E. Bozzo and C. Ferrigno, on behalf of the INTEGRAL SPI-ACS GRB 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 GRB 240112A (GECAM-B detection: Wang and Xiong, GCN 35520) has been detected by Konus-Wind, INTEGRAL (SPI-ACS), GECAM-B, and Mars-Odyssey (HEND), so far, at about 20482 s UT (05:41:22). We have triangulated it to a preliminary, 3 sigma error box whose coordinates are: --------------------------------------------- RA(2000), deg Dec(2000), deg --------------------------------------------- Center: 289.407 (19h 17m 38s) +21.459 (+21d 27' 31") Corners: 291.869 (19h 27m 29s) +20.713 (+20d 42' 47") 287.138 (19h 08m 33s) +22.071 (+22d 04' 17") 286.938 (19h 07m 45s) +22.067 (+22d 04' 02") 291.666 (19h 26m 40s) +20.731 (+20d 43' 50") --------------------------------------------- The error box area is 809 sq. arcmin, and its maximum dimension is 4.8 deg (the minimum one is 3 arcmin). The Sun distance was 42 deg. The IPN localization is consistent with, but reduces the area of, the GECAM-B localization (GCN 35520). The position of SGR 1935+2154 is outside the box. This localization may be improved. A triangulation map and HEALPix FITS file are posted at http://www.ioffe.ru/LEA/GRBs/GRB240112_T20481/IPN 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/35554. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...