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GCN Circular 32986

Subject
IPN triangulation of GRB 221124A (long)
Date
2022-11-27T15:01:15Z (a year ago)
From
Dmitry Svinkin at Ioffe Institute <svinkin@mail.ioffe.ru>
D. Svinkin, D. Frederiks, A. Ridnaia, A. Lysenko,
and T. Cline on behalf of the Konus-Wind team,

S. Xiao, S.-L. Xiong, X.-Q. Li, X.-Y. Wen, L.-M. Song, S.-J. Zheng,
W.-X. Peng, and F. Zhang on behalf of the GECAM team,

E. Bozzo and C. Ferrigno, on behalf of the INTEGRAL SPI-ACS GRB team,

and

S. Barthelmy, J. Cummings, H. Krimm, D. Palmer, and A. Tohuvavohu
on behalf of the Swift-BAT team, report:

The long-duration GRB 221124A
(CALET-CGBM detection: Sugita et al., GCN Circ. 32981Not found
 
 
;
Swift/BAT-GUANO detection: Tohuvavohu et al., GCN Circ. 32984Not found
 
 
;
GECAM-B detection: Huang et al., ATel 15777)
has been detected by CALET (CGBM), Konus-Wind, INTEGRAL (SPI-ACS),
GECAM-B (GRD), and Swift (BAT), so far,
at about 7224 s UT (02:00:24).
The burst was outside the coded field of view of the BAT.

We have triangulated it to a preliminary, error box
whose coordinates are:
  ---------------------------------------------
   RA(2000), deg                 Dec(2000), deg
  ---------------------------------------------
  Center:
   310.423 (20h 41m 42s) +34.999 (+34d 59' 56")
  Corners:
   317.972 (21h 11m 53s) +25.823 (+25d 49' 21")
   314.677 (20h 58m 42s) +33.947 (+33d 56' 49")
   299.731 (19h 58m 56s) +43.400 (+43d 24' 01")
   305.508 (20h 22m 02s) +36.238 (+36d 14' 17")
  ---------------------------------------------
The error box area is 50 sq. deg, and its maximum
dimension is 23 deg (the minimum one is 3.3 deg).
The Sun distance was about 84 deg.

This box may be improved.

A triangulation map and HEALPix FITS file are posted at
http://www.ioffe.ru/LEA/GRBs/GRB221124_T07224/IPN

The Konus-Wind time history and spectrum will be given in a forthcoming
GCN Circular.