TITLE: GCN CIRCULAR NUMBER: 40976 SUBJECT: IPN triangulation of GRB 250703A DATE: 25/07/05 14:48:05 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, A. Lysenko, D. Svinkin, 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, 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 20250703A (Fermi-GBM detection: Fermi GBM team, GCN Circ. 40909) was detected by Fermi (GBM trigger 773226456), Konus-Wind, and Mars-Odyssey (HEND) at about 32851 s UT (09:07:31). We have triangulated it to a preliminary, 3 sigma error box whose coordinates are: --------------------------------------------- RA(2000), deg Dec(2000), deg --------------------------------------------- Center: 351.240 (23h 24m 58s) +28.375 (+28d 22' 31") Corners: 352.362 (23h 29m 27s) +28.111 (+28d 06' 39") 350.071 (23h 20m 17s) +28.695 (+28d 41' 42") 350.131 (23h 20m 32s) +28.603 (+28d 36' 11") 352.423 (23h 29m 41s) +28.013 (+28d 00' 47") --------------------------------------------- The error box area is 0.16 sq. deg, and its maximum dimension is 2.2 deg (the minimum one is 5 arcmin). The Sun distance was 96 deg. The IPN localization is consistent with, but reduces the area of, the Fermi-GBM localization. A triangulation map and HEALPix FITS file are posted at http://www.ioffe.ru/LEA/GRBs/GRB250703_T32851/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/40976. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...