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GCN Circular 22550

Subject

IPN Triangulation of GRB 180326A (long)

Date

2018-03-26T18:13:59Z (7 years ago)

From

Dmitry Svinkin at Ioffe Institute <svinkin@mail.ioffe.ru>

K. Hurley, on behalf of the IPN,

I. G. Mitrofanov, D. Golovin, M. L. Litvak, and A. B. Sanin,
on behalf of the HEND-Odyssey GRB team,

D. Svinkin, S. Golenetskii, R. Aptekar, D. Frederiks, A. Kozlova,
and T. Cline on behalf of the Konus-Wind team,

A. von Kienlin, X. Zhang, A. Rau, V. Savchenko, E. Bozzo,
and C. Ferrigno, on behalf of the INTEGRAL SPI-ACS GRB team,

and

W. Boynton, C. Fellows, K. Harshman, H. Enos, and R. Starr,
on behalf of the GRS-Odyssey GRB team, report:

The long-duration GRB 180326A has been detected by Konus-Wind,
INTEGRAL (SPI-ACS), and Mars-Odyssey (HEND), so far, at about 12367 s UT 
(03:26:07).

We have triangulated it to a preliminary, 3 sigma error box whose 
coordinates are:
  ---------------------------------------------
   RA(2000), deg                 Dec(2000), deg
  ---------------------------------------------
  Center:
   291.728 (19h 26m 55s) -13.553 (-13d 33' 10")
  Corners:
   291.335 (19h 25m 20s) -13.809 (-13d 48' 34")
   291.286 (19h 25m 09s) -12.172 (-12d 10' 20")
   292.121 (19h 28m 29s) -13.297 (-13d 17' 48")
   292.210 (19h 28m 50s) -15.184 (-15d 11' 04")
  ---------------------------------------------
The error box area is 1.37 sq. deg, and its maximum
dimension is 3.14 deg (the minimum one is 46.9 arcmin).
The Sun distance was 74 deg.

This box may be improved.

A triangulation map is posted at
http://www.ioffe.ru/LEA/GRBs/GRB180326_T12367/IPN

The time history and spectrum will be given in forthcoming
GCN Circulars.