[vsnet-grb-info 14737] IPN triangulation of GRB 130330A

GCN Circulars gcncirc at capella2.gsfc.nasa.gov
Mon Mar 31 19:23:27 JST 2014


TITLE:   GCN CIRCULAR
NUMBER:  16051
SUBJECT: IPN triangulation of GRB 130330A
DATE:    14/03/31 10:23:19 GMT
FROM:    Valentin Pal'shin at Ioffe Inst  <val at 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,

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, and

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

The long-duration GRB 140330A (LAT detection: Vianello, Kocevski, and 
Racusin, GCN 16048) has been observed by Fermi (GBM: trigger 417845997), 
Konus-Wind, INTEGRAL (SPI-ACS), MESSENGER (GRNS), and Mars Odyssey 
(HEND), so far, at about 15594 s UT (04:19:54).

We have triangulated it to a preliminary, 3 sigma error box whose 
coordinates are:
  ---------------------------------------------
   RA(2000), deg                 Dec(2000), deg
  ---------------------------------------------
  Center:
   328.068 (21h 52m 16s) -57.745 (-57d 44' 42")
  Corners:
   326.549 (21h 46m 12s) -57.180 (-57d 10' 46")
   327.145 (21h 48m 35s) -57.662 (-57d 39' 43")
   329.617 (21h 58m 28s) -58.274 (-58d 16' 25")
   328.989 (21h 55m 57s) -57.817 (-57d 49' 00")
  ---------------------------------------------
The error box area is 1482 sq. arcmin, and its maximum dimension is 1.97 
deg (the minimum one is 17 arcmin).

The center of the LAT position (Vianello, Kocevski, and Racusin, GCN 
16048) is 6.6 deg from the center of the box and, hence, this position 
is incorrect (or the LAT source is unrelated to this GRB).

This box may be improved.

A triangulation map is posted at 
http://www.ioffe.ru/LEA/GRBs/GRB140330_T15594/IPN/


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