TITLE: GCN CIRCULAR NUMBER: 35430 SUBJECT: IPN triangulation of GRB 231224A (short) DATE: 23/12/27 12:51:08 GMT FROM: Dmitry Svinkin at Ioffe Institute <dmitrysvinkin@gmail.com> D. Svinkin, D. Frederiks, A. Ridnaia, A. Lysenko, on behalf of the IPN, A. Goldstein, M. S. Briggs, C. Wilson-Hodge, and E. Burns on behalf of the Fermi GBM team, and E. Bozzo and C. Ferrigno, on behalf of the INTEGRAL SPI-ACS GRB team, report: The short-duration GRB 231224A (Fermi-GBM detection: The Fermi GBM team, GCN 35426) was detected by Fermi (GBM trigger 725143760) and INTEGRAL (SPI-ACS) at about 74956 s UT (20:49:16). We have triangulated it to a GBM-SPI-ACS annulus centered at RA(2000)=230.929 deg (15h 23m 43s) Dec(2000)=-83.517 deg (-83d 30' 60"), whose radius is 32.644 +/- 5.664 deg (3 sigma). The annulus combined with the Fermi-GBM final position (GCN 35426; glg_healpix_all_bn231224868_v00) gives ~792 sq. deg (3 sigma) localization region. A triangulation map and HEALPix FITS file are posted at http://www.ioffe.ru/LEA/GRBs/GRB231224_T74955/IPN/ View this GCN Circular online at https://gcn.nasa.gov/circulars/35430. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...