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GCN Circular 35652

Subject
IPN triangulation of GRB 240125A (short)
Date
2024-01-29T20:50:21Z (5 months ago)
From
Dmitry Svinkin at Ioffe Institute <svinkin@mail.ioffe.ru>
Via
legacy email
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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