GCN Circular 35654
Subject
IPN triangulation of GRB 240125B (short)
Date
2024-01-30T19:43:07Z (a year ago)
From
Dmitry Svinkin at Ioffe Institute <svinkin@mail.ioffe.ru>
Via
legacy email
D. Svinkin, D. Frederiks, A. Ridnaia, A. Lysenko,
on behalf of the IPN,
A. Goldstein, M. S. Briggs, C. Wilson-Hodge,
and E. Burns on behalf of the Fermi GBM team,
and
E. Bozzo and C. Ferrigno, on behalf of the INTEGRAL SPI-ACS GRB team,
report:
The short-duration GRB 240125B
(Fermi-GBM detection: The Fermi GBM team, GCN 35634)
was detected by Fermi (GBM trigger 727908527), and
INTEGRAL (SPI-ACS) at about 74923 s UT (20:48:43).
We have triangulated it to a GBM-SPI-ACS annulus centered at
RA(2000)=132.059 deg (08h 48m 14s) Dec(2000)=+85.090 deg (+85d 05' 24")
whose radius is 34.188 +/- 6.337 deg (3 sigma).
The annulus combined with the Fermi-GBM final position (GCN 35634;
glg_healpix_all_bn240125867_v00) and the Fermi Earth-occultation information gives 575 sq. deg (3 sigma) localization region.
A triangulation map and HEALPix FITS file are posted at
http://www.ioffe.ru/LEA/GRBs/GRB240125_T74922/IPN/