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GCN Circular 13975

Subject
IPN Triangulation of GRB 121118A
Date
2012-11-19T17:34:19Z (12 years ago)
From
Valentin Pal'shin at Ioffe Inst <val@mail.ioffe.ru>
K. Hurley and J. Goldsten, on behalf of the MESSENGER GRNS GRB team,

S. Golenetskii, R. Aptekar, E. Mazets, V. Pal'shin, D. Frederiks,
D. Svinkin, and T. Cline, on behalf of the Konus-Wind team,

V. Connaughton, M. Briggs, C. Meegan, and V. Pelassa, 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,

K. Yamaoka, M. Ohno, Y. Hanabata, Y. Fukazawa, T. Takahashi, M. Tashiro,
Y. Terada, T. Murakami, and K. Makishima, on behalf of the Suzaku WAM
team, report:

The long GRB 121118A with a single short bright peak has been observed 
by Konus-Wind, Fermi(GBM: trigger 374939337), INTEGRAL(SPI-ACS), 
Suzaku(WAM), and MESSENGER(GRNS), so far, at about 49734 s UT (13:48:54).

We have triangulated it to a preliminary, 3 sigma error box whose
coordinates are:
    ---------------------------------------------
     RA(2000), deg                 Dec(2000), deg
    ---------------------------------------------
    Center:
     299.379 (19h 57m 31s) +65.654 (+65d 39' 16")
    Corners:
     296.557 (19h 46m 14s) +67.903 (+67d 54' 12")
     297.432 (19h 49m 44s) +66.848 (+66d 50' 53")
     301.756 (20h 07m 01s) +63.386 (+63d 23' 11")
     301.156 (20h 04m 37s) +64.447 (+64d 26' 48")
    ---------------------------------------------
The error box area is 0.91 sq. deg, and its maximum dimension is 5.0 deg 
(the minimum one is 1.1 deg).

This box can be improved.

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