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GCN Circular 16752

Subject
IPN Triangulation of GRB 140825A (very intense/long)
Date
2014-08-28T18:06:34Z (9 years ago)
From
Dmitry Svinkin at Ioffe Institute <svinkin@mail.ioffe.ru>
K. Hurley and J. Goldsten, on behalf of the MESSENGER NS GRB team,

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

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

S. Golenetskii, R. Aptekar, V. Pal'shin, D. Frederiks, D. Svinkin, 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,

S. Barthelmy, J. Cummings, N. Gehrels, H. Krimm, and D. Palmer, on
behalf of the Swift-BAT team, and

D. M. Smith, on behalf of the RHESSI GRB team, report:

The long-duration, very intense GRB 140825A has been observed by 
Konus-Wind, MESSENGER (GRNS), Mars Odyssey (HEND), Swift (BAT), RHESSI, 
and INTEGRAL (SPI-ACS), so far, at about 24925 s UT (06:55:25). The 
burst was outside the coded field of view of the BAT.

We have triangulated it to a preliminary, 3 sigma error box whose 
coordinates are:
   ---------------------------------------------
    RA(2000), deg                 Dec(2000), deg
   ---------------------------------------------
   Center:
     88.715 (05h 54m 51s) -11.830 (-11d 49' 48")
   Corners:
     88.611 (05h 54m 27s) -11.630 (-11d 37' 48")
     88.657 (05h 54m 38s) -11.950 (-11d 57' 01")
     88.818 (05h 55m 16s) -12.029 (-12d 01' 46")
     88.772 (05h 55m 05s) -11.710 (-11d 42' 36")
   ---------------------------------------------
The error box area is 169 sq. arcmin, and its maximum
dimension is 27 arcmin (the minimum one is 9 arcmin).

This box may be improved.

A triangulation map is posted at
http://www.ioffe.ru/LEA/GRBs/GRB140825_T24925/IPN/

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