TITLE: GCN CIRCULAR NUMBER: 35652 SUBJECT: IPN triangulation of GRB 240125A (short) DATE: 24/01/29 20:50:21 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,
G. Waratkar (IITB), J.Joshi (IUCAA), A. Vibhute (IUCAA), V. Bhalerao (IITB), D. Bhattacharya (Ashoka University/IUCAA), A. R. Rao (IUCAA/TIFR), and S. Vadawale (PRL) on behalf of the Astrosat-CZTI team,
S. Barthelmy, J. Cummings, H. Krimm, D. Palmer, and A. Tohuvavohu 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 240125A (Glowbug detection: Cheung et al., GCN 35630; AstroSat-CZTI detection: Joshi et al., GCN 35637; CALET-CGBM detection: Marrocchesi et al., GCN 35639; GRBAlpha detection: Dafcikova et al., GCN 35645) was detected by Glowbug, Astrosat (CZTI) Konus-Wind, GRBAlpha, CALET (CGBM) and Mars-Odyssey (HEND) at about 34499 s UT (09:34:59).
We have triangulated it to a preliminary, 3 sigma error box whose coordinates are: ------------------------------- RA(2000), deg Dec(2000), deg ------------------------------- Center: 131.528 +66.846 Corners: 147.975 +59.476 147.882 +59.456 92.799 +68.770 93.211 +68.871 -------------------------------- The error box area is 1.85 sq. deg and its maximum dimension is 24.6 deg (the minimum one is 3.3 arcmin). The Sun distance was 132 deg.
This localization may be improved.
A triangulation map and HEALPix FITS file are posted at http://www.ioffe.ru/LEA/GRBs/GRB240125_T34503/IPN
The Konus-Wind time history and spectrum will be given in a forthcoming GCN Circular.
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