IPN triangulation of GRB 240905B (short)

The short-duration GRB 240905B (Fermi-GBM detection: The Fermi GBM team, GCN 37389; Dalessi et al., GCN 37436; AstroSat-CZTI detection: Joshi et al., GCN 37391; Fermi-LAT detection: Gupta et al., GCN 37418) was detected by Fermi (GBM and LAT), Konus-Wind, INTEGRAL (SPI-ACS), Astrosat (CZTI), and BepiColombo (MGNS) at about 16036 s UT (04:27:16). We have triangulated it to a preliminary, 3 sigma error box whose coordinates are: --------------------------------------------- RA(2000), deg Dec(2000), deg --------------------------------------------- Center: 267.922 (17h 51m 41s) +14.240 (+14d 14' 24") Corners: 267.264 (17h 49m 03s) +12.544 (+12d 32' 40") 267.181 (17h 48m 43s) +12.565 (+12d 33' 54") 268.618 (17h 54m 28s) +15.927 (+15d 55' 37") 268.703 (17h 54m 49s) +15.906 (+15d 54' 21") --------------------------------------------- The error box area is 1087 sq. arcmin, and its maximum dimension is 3.65 deg (the minimum one is 5 arcmin). The Sun distance was 100 deg. This localization may be improved. The IPN localization is consistent with, but reduces the area of, the Fermi-LAT localization. Swift-XRT reported six afterglow candidates for this burst (Source 1-6, Brivio et. al., GCN 37421). Three candidates (Sources 1, 2, and 6) are inside the IPN box. A triangulation map and HEALPix FITS file are posted at http://www.ioffe.ru/LEA/GRBs/GRB240905_T16038/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.