GCN Circular 45208
Subject
IPN triangulation of GRB 260706B
Event
Date
2026-07-24T16:54:10Z (2 months ago)
Edited On
2026-07-27T18:14:04Z (2 months ago)
From
Dmitry Svinkin at Ioffe Institute <svinkin@mail.ioffe.ru>
Edited By
Judith Racusin at NASA/GSFC <judith.racusin@nasa.gov> on behalf of Dmitry Svinkin at Ioffe Institute <svinkin@mail.ioffe.ru>
Via
Web form
A.S. Kozyrev, D.V. Golovin, M.L. Litvak, I.G. Mitrofanov, A.B. Sanin,
and J. Benkhoff on behalf of the MGNS/BepiColombo and HEND/Mars-Odyssey teams,
G. Jones on behalf of the BepiColombo team,
D. Svinkin, D. Frederiks, A. Lysenko, A. Ridnaia,
and T. Cline on behalf of the Konus-Wind team,
D.J. Lawrence, J.O. Goldsten, P.N. Peplowski
on behalf of the Psyche/GRNS team,
E. Burns on behalf of the IPN,
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 long-duration GRB 260706B was detected by Konus-Wind,
Psyche (GRNS), Mars-Odyssey (HEND), and BepiColombo (MGNS)
at about 84082 s UT (23:21:22).
We have triangulated it to a preliminary, 3 sigma error box
whose coordinates are:
---------------------------------------------
RA(2000), deg Dec(2000), deg
---------------------------------------------
Center:
130.509 (08h 42m 02s) +16.967 (+16d 58' 00")
Corners:
130.752 (08h 43m 01s) +17.921 (+17d 55' 14")
130.743 (08h 42m 58s) +17.692 (+17d 41' 30")
130.183 (08h 40m 44s) +15.751 (+15d 45' 04")
130.232 (08h 40m 56s) +16.102 (+16d 06' 06")
---------------------------------------------
The error box area is 352 sq. arcmin, and its maximum
dimension is 2.2 deg (the minimum one is 3 arcmin).
The Sun distance was 24 deg.
This localization may be improved, as soon as the Psyche (GRNS) timing accuracy will be analyzed.
A triangulation map and HEALPix FITS files are posted at
http://www.ioffe.ru/LEA/GRBs/GRB260706_T84082/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.