TITLE: GCN CIRCULAR NUMBER: 41447 SUBJECT: IPN triangulation of GRB 250814C (short) DATE: 25/08/20 14:48:51 GMT FROM: Dmitry Svinkin at Ioffe Institute svinkin@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,
D. Svinkin, D. Frederiks, A. Lysenko, A. Ridnaia, and T. Cline on behalf of the Konus-Wind team,
E. Burns on behalf of the IPN,
Y. Zhang, C. Wang, S. Xiong, J. Wei, and B. Cordier on behalf of the SVOM-GRM team,
S. Barthelmy, J. Cummings, H. Krimm, D. Palmer, A. Tohuvavohu, and J. DeLaunay on behalf of the Swift-BAT 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 250814C (SVOM-GRM detection: Wang et al., GCN 41385) was detected by Konus-Wind, SVOM (GRM), Swift (BAT), and Mars-Odyssey (HEND) at about 12263 s UT (03:24:23). The burst was outside the coded field of view of the BAT.
We have triangulated it to a preliminary, 3 sigma error box whose coordinates are: --------------------------------------------- RA(2000), deg Dec(2000), deg --------------------------------------------- Center: 164.655 (10h 58m 37s) +47.526 (+47d 31' 35") Corners: 164.814 (10h 59m 15s) +47.549 (+47d 32' 56") 164.789 (10h 59m 09s) +47.597 (+47d 35' 48") 164.497 (10h 57m 59s) +47.504 (+47d 30' 13") 164.521 (10h 58m 05s) +47.456 (+47d 27' 21") --------------------------------------------- The error box area is 39 sq. arcmin, and its maximum dimension is 14 arcmin (the minimum one is 3 arcmin). The Sun distance was 37 deg.
A triangulation map and HEALPix FITS file are posted at http://www.ioffe.ru/LEA/GRBs/GRB250814_T12259/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.
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