Skip to main content
New! Browse Circulars by Event, Advanced Search, Sample Codes, Schema Release. See news and announcements

GCN Circular 37156

Subject
IPN triangulation of GRB 240810A (short)
Date
2024-08-12T21:23:24Z (10 months 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 240810A
(Fermi-GBM detection: The Fermi GBM team, GCN 37133)
was detected by Fermi (GBM), Konus-Wind, INTEGRAL (SPI-ACS),
and Mars-Odyssey (HEND) at about 76039 s UT (21:07:19).

We have triangulated it to a preliminary, 3 sigma error box
whose coordinates are:
 ---------------------------------------------
  RA(2000), deg                 Dec(2000), deg
 ---------------------------------------------
 Center:
  146.339 (09h 45m 21s) -38.135 (-38d 08' 07")
 Corners:
  146.325 (09h 45m 18s) -38.221 (-38d 13' 16")
  146.211 (09h 44m 51s) -38.270 (-38d 16' 13")
  146.353 (09h 45m 25s) -38.050 (-38d 02' 58")
  146.467 (09h 45m 52s) -38.000 (-37d 60' 00")
 ---------------------------------------------
The error box area is 51 sq. arcmin, and its maximum
dimension is 20 arcmin (the minimum one is 3 arcmin).
The Sun distance was 53 deg.

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

This localization may be improved.

A triangulation map and HEALPix FITS file are posted at
http://www.ioffe.ru/LEA/GRBs/GRB240810_T76037/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.
Looking for U.S. government information and services? Visit USA.gov