GCN Circular 44982
Subject
IPN triangulation of GRB 260617A (short)
Event
Date
2026-06-18T21:50:23Z (15 days ago)
From
Anna Ridnaia at Ioffe Institute <ridnaia@mail.ioffe.ru>
Via
Web form
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 260617A
(Fermi-GBM detection: Fermi GBM team, GCN 44969;
Godwin & Meegan, GCN 44972)
was detected by Fermi (GBM trigger 803425008), Konus-Wind,
and Mars-Odyssey (HEND) at about 77803 s UT (21:36:43).
We have triangulated it to the 3 sigma localization region
whose area is 3360 sq. arcmin, and its maximum
dimension is 4.4 deg (the minimum one is 12.9 arcmin).
A triangulation map and HEALPix FITS files are posted at
http://www.ioffe.ru/LEA/GRBs/GRB260617_T77808/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.