TITLE: GCN CIRCULAR NUMBER: 43691 SUBJECT: IPN triangulation of GRB 260207B (short/hard with EE) DATE: 26/02/10 20:33:53 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 short-duration GRB with extended emission GRB 260207B (Fermi-GBM detection: Fermi GBM team, GCN 43629; Sonawane & Bala, GCN 43634; GECAM-B observation: Zao et al., GCN 43644; AstroSat CZTI detection: Goyal et al., GCN 43680) was detected by Fermi (GBM trigger 792162735), Konus-Wind, GECAM-B, AstroSat (CZTI), and Mars-Odyssey (HEND) at about 47531 s UT (13:12:11). We have triangulated it to a preliminary, 3 sigma error box whose coordinates are: --------------------------------------------- RA(2000), deg Dec(2000), deg --------------------------------------------- Center: 283.695 (18h 54m 47s) +51.643 (+51d 38' 34") Corners: 284.134 (18h 56m 32s) +51.778 (+51d 46' 39") 283.959 (18h 55m 50s) +51.758 (+51d 45' 29") 283.258 (18h 53m 02s) +51.506 (+51d 30' 22") 283.432 (18h 53m 44s) +51.527 (+51d 31' 36") --------------------------------------------- The error box area is 67 sq. arcmin, and its maximum dimension is 36 arcmin (the minimum one is 2 arcmin). The Sun distance was 74 deg. A triangulation map and HEALPix FITS file are posted at http://www.ioffe.ru/LEA/GRBs/GRB260207_T47529/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/43691. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...