Skip to main content
Testing. You are viewing the public testing version of GCN. For the production version, go to https://gcn.nasa.gov.
New Announcement Feature, Code of Conduct, Circular Revisions. See news and announcements

GCN Circular 26918

Subject
IPN triangulation of GRB 200125B
Date
2020-01-28T16:20:12Z (4 years ago)
From
Dmitry Svinkin at Ioffe Institute <svinkin@mail.ioffe.ru>
D. Svinkin, S. Golenetskii, R. Aptekar, D. Frederiks, A. Ridnaia,
and T. Cline on behalf of the Konus-Wind team,

K. Hurley, on behalf of the IPN,

A. Goldstein, M. S. Briggs, and C. Wilson-Hodge
on behalf of the Fermi GBM team, and

S. Xiao, C. K. Li, X. B. Li, Y. Huang, and S. L. Xiong
on behalf of the Insight-HXMT/HE GRB team, report:

The long-duration, very bright GRB 200125B
(Fermi-GBM detection: The Fermi GBM team, GCN Circ. 26879;
BALROG localization: Biltzinger et al., GCN Circ. 26880;
Insight-HXMT/HE detection: Cai et al., GCN Circ. 26888)
was detected by Fermi (GBM trigger 601677816), Konus-Wind,
and Insight (HXMT/HE) at about 74611 s UT (20:43:31).

We have triangulated this GRB to a Konus-GBM annulus centered at
RA(2000)=321.900 deg (21h 27m 36s) Dec(2000)=-14.917 deg (-14d 55' 02")
whose radius is 86.537 +/- 0.136 deg (3 sigma) and a wider
Konus-HXMT annulus.

These annuli may be improved.

The annulus is consistent with, but reduces
the area of, the final Fermi-GBM (GCN Circ. 26879) and
BALROG (GCN Circ. 26880) localizations.

A triangulation map is posted at
http://www.ioffe.ru/LEA/GRBs/GRB200125_T74611/IPN/

The Konus-Wind time history and spectrum will be given in a forthcoming
GCN Circular.
Looking for U.S. government information and services? Visit USA.gov