[vsnet-grb-info 20669] IPN Triangulation of GRB 180611A (long)

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  22767
SUBJECT: IPN Triangulation of GRB 180611A (long)
DATE:    18/06/12 11:23:55 GMT
FROM:    Anna Kozlova at Ioffe Institute  <ann_kozlova at mail.ioffe.ru>

K. Hurley, on behalf of the IPN,

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

A. Kozlova, S. Golenetskii, R. Aptekar, D. Frederiks, D. Svinkin,
and T. Cline, on behalf of the Konus-Wind team,

A. Goldstein, M. S. Briggs, and C. Wilson-Hodge,
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:

The long-duration GRB 180611A was detected by
Fermi (GBM; trigger 550380546), INTEGRAL (SPI-ACS), Konus-Wind,
and Mars-Odyssey (HEND), at about 12541 s UT (03:29:01).

We have triangulated it to a preliminary, 3 sigma error box whose
coordinates are:
---------------------------------------------
  RA(2000), deg                 Dec(2000), deg
 ---------------------------------------------
 Center:
   46.471 (03h 05m 53s) -48.835 (-48d 50' 05")
 Corners:
   47.883 (03h 11m 32s) -52.743 (-52d 44' 36")
   50.103 (03h 20m 25s) -53.759 (-53d 45' 33")
   45.101 (03h 00m 24s) -44.765 (-44d 45' 54")
   43.190 (02h 52m 46s) -43.503 (-43d 30' 10")
 ---------------------------------------------
The error box area is 8.7 sq. deg, and its maximum
dimension is 11.2 deg (the minimum one is 53.9 arcmin).
The Sun distance was 75 deg.

This box may be improved.

A triangulation map is posted at
http://www.ioffe.ru/LEA/GRBs/GRB180611_T12541/IPN/

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