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GCN Circular 16761

Subject
IPN Triangulation of GRB 140901A (short/hard/very intense)
Date
2014-09-02T11:36:07Z (10 years ago)
From
Valentin Pal'shin at Ioffe Inst <val@mail.ioffe.ru>
K. Hurley, and V. Pal'shin on behalf of the IPN team,

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

V. Connaughton, M. S. Briggs, C. Meegan, V. Pelassa, and A. Goldstein, 
on behalf of the Fermi GBM 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:

A short-duration, hard spectrum, very intense GRB 140901A has been 
observed by Fermi(GBM trigger 431293300), Mars Odyssey (HEND), and 
INTEGRAL (SPI-ACS), so far, at about 70897 s UT (19:41:37).

We have triangulated it to a preliminary, 3 sigma error box whose 
coordinates are:
  ---------------------------------------------
   RA(2000), deg                 Dec(2000), deg
  ---------------------------------------------
  Center:
    15.816 (01h 03m 16s) -32.755 (-32d 45' 19")
  Corners:
    15.165 (01h 00m 40s) -32.225 (-32d 13' 30")
    14.965 (00h 59m 52s) -32.345 (-32d 20' 44")
    16.481 (01h 05m 55s) -33.279 (-33d 16' 43")
    16.682 (01h 06m 44s) -33.156 (-33d 09' 20")
  ---------------------------------------------
The error box area is 1125 sq. arcmin, and its maximum
dimension is 1.66 deg (the minimum one is 12 arcmin).
The Sun distance was 139 deg.

This box can be improved.

A triangulation map is posted at
http://www.ioffe.ru/LEA/GRBs/GRB140901_T70897/IPN/

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