TITLE: GCN CIRCULAR NUMBER: 13675 SUBJECT: IPN Triangulation of GRB 120816B (short/exceptionally intense) DATE: 12/08/18 14:32:17 GMT FROM: Dmitry Svinkin at Ioffe Institute S. Golenetskii, R. Aptekar, E. Mazets, V. Pal'shin, D. Frederiks, D. Svinkin, and T. Cline on behalf of the Konus-Wind team, K. Hurley on behalf of the IPN, A. von Kienlin, X. Zhang, A. Rau, V. Savchenko, E. Bozzo, and C. Ferrigno, on behalf of the INTEGRAL SPI-ACS GRB team, S. Barthelmy, J. Cummings, N. Gehrels, H. Krimm, and D. Palmer, on behalf of the Swift-BAT team, and K. Yamaoka, M. Ohno, Y. Hanabata, Y. Fukazawa, T. Takahashi, M. Tashiro, Y. Terada, T. Murakami, and K. Makishima on behalf of the Suzaku WAM team, report: The short-duration, hard, exceptionally intense GRB 120816B has been observed by Konus-Wind, INTEGRAL (SPI-ACS), Suzaku (WAM), and Swift(BAT), at about 86299 s UT (23:58:19). The burst was outside the coded field of view of the BAT. We have triangulated the burst to a preliminary, 3 sigma error box whose coordinates are: --------------------------------------------- RA(2000), deg Dec(2000), deg --------------------------------------------- Corners: 341.155 (22h 44m 37s) +2.156 ( +2d 09' 22") 342.478 (22h 49m 55s) -0.731 ( +0d 43' 51") 334.205 (22h 16m 49s) -5.388 ( -5d 23' 15") 332.423 (22h 09m 42s) -2.756 ( -2d 45' 20") --------------------------------------------- The error box area is 10.030 sq. deg This box may be improved. A triangulation map is posted at http://www.ioffe.ru/LEA/GRBs/GRB120816_T86298/IPN/ The time history and spectrum will be given in a forthcoming GCN Circular.