[vsnet-grb-info 13109] IPN Triangulation of GRB 130425A

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  14446
SUBJECT: IPN Triangulation of GRB 130425A
DATE:    13/04/26 16:07:26 GMT
FROM:    Valentin Pal'shin at Ioffe Inst  <val at 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, and C. Meegan, 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

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-duration, intense GRB 130425A (Fermi/GBM detection: von 
Kienlin, GCN Circ. 14442) has been observed by Konus-Wind, MESSENGER 
(GRNS), INTEGRAL (SPI-ACS), and Suzaku (WAM), so far, at about 28280 s 
UT (07:51:20).

We have triangulated it to a preliminary, 3 sigma error box whose 
coordinates are:
---------------------------------------------
  RA(2000), deg                 Dec(2000), deg
---------------------------------------------
  Center:
     6.211 (00h 24m 51s) -70.183 (-70d 11' 00")
  Corners:
    14.165 (00h 56m 40s) -70.601 (-70d 36' 05")
    11.987 (00h 47m 57s) -70.402 (-70d 24' 09")
   358.255 (23h 53m 01s) -69.341 (-69d 20' 28")
     0.370 (00h 01m 29s) -69.740 (-69d 44' 24")
---------------------------------------------
The error box area is 0.683 sq. deg, and its maximum
dimension is 5.58 deg (the minimum one is 45 arcmin).

This box may be improved.

The center of the GBM location (von Kienlin, GCN Circ. 14442) is 4.6
deg from the center of the IPN box.

A triangulation map is posted at
http://www.ioffe.ru/LEA/GRBs/GRB130425_T28280/IPN/