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GCN Circular 36872

Subject
IPN triangulation of GRB 240715A (short)
Date
2024-07-15T15:46:04Z (a year ago)
From
Anna Ridnaia at Ioffe Institute <ridnaia@mail.ioffe.ru>
Via
Web form
A.S. Kozyrev, D.V. Golovin, M.L. Litvak, I.G. Mitrofanov, and A.B. Sanin
on behalf of the HEND/Mars Odyssey team,

A. Ridnaia, D. Frederiks, A. Lysenko, D. Svinkin,
and T. Cline on behalf of the Konus-Wind team,

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

E. Bozzo and C. Ferrigno, on behalf of the INTEGRAL SPI-ACS GRB 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 240715A
(Fermi-GBM detection: The Fermi GBM team, GCN 36866Loading...
 
 )
was detected by Fermi (GBM trigger 742715048),
Konus-Wind, INTEGRAL (SPI-ACS), and Mars-Odyssey (HEND)
at about 20642 s UT (05:44:02).

We have triangulated it to a preliminary, 3 sigma error box
whose coordinates are:
 ---------------------------------------------
  RA(2000), deg                 Dec(2000), deg
 ---------------------------------------------
 Center:
    5.271 (00h 21m 05s) -36.521 (-36d 31' 16")
 Corners:
    5.188 (00h 20m 45s) -36.486 (-36d 29' 11")
    5.394 (00h 21m 35s) -36.672 (-36d 40' 20")
    5.354 (00h 21m 25s) -36.556 (-36d 33' 22")
    5.148 (00h 20m 36s) -36.369 (-36d 22' 09")
 ---------------------------------------------
The error box area is 48 sq. arcmin, and its maximum
dimension is 22 arcmin (the minimum one is 3 arcmin).
The Sun distance was 118 deg.

The IPN localization is consistent with, but reduces the area of,
the Fermi-GBM final localization.

Swift ToO has been submitted.

This localization may be improved.

A triangulation map and HEALPix FITS file are posted at
http://www.ioffe.ru/LEA/GRBs/GRB240715_T20645/IPN/
The HEALPix triangulation map is the multi-order HEALPix in units of
probability density.

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