TITLE:   GCN CIRCULAR
NUMBER:  42614
SUBJECT: IPN triangulation of GRB 251105B (possible sGRB with EE)
DATE:    25/11/07 15:12:08 GMT
FROM:    Dmitry Svinkin at Ioffe Institute <svinkin@mail.ioffe.ru>

A.S. Kozyrev, D.V. Golovin, M.L. Litvak, I.G. Mitrofanov, and A.B. Sanin
on behalf of the HEND/Mars Odyssey team,

D. Svinkin, D. Frederiks, A. Lysenko, A. Ridnaia,
and T. Cline on behalf of the Konus-Wind team,

Y. Zhang, C. Wang, S. Xiong, J. Wei, and B. Cordier
on behalf of the SVOM-GRM team,

A. Goldstein, M. S. Briggs, C. Wilson-Hodge,
and E. Burns on behalf of the Fermi GBM team,

and

W. Boynton, C. Fellows, K. Harshman, H. Enos, R. Starr,
and A.S. Gardner on on behalf of the GRS-Odyssey GRB team,
report:

The possible short-duration GRB with extended emission GRB 251105B
(SVOM-GRM detection: Wang et al., GCN 42586;
Fermi-GBM detection: Hamburg eat al., GCN 42589;
AstroSat-CZTI detection: Harsha et al., GCN 42591)
was detected by SVOM (GRM), Konus-Wind, Fermi (GBM), AstroSat (CZTI),
and Mars-Odyssey (HEND) at about 3514 s UT (00:58:34).

We have triangulated it to a preliminary, 3 sigma error box
whose coordinates are:
 ---------------------------------------------
  RA(2000), deg                 Dec(2000), deg
 ---------------------------------------------
 Center:
  277.814 (18h 31m 15s)  +9.028 ( +9d 01' 39")
 Corners:
  277.022 (18h 28m 05s)  +9.993 ( +9d 59' 36")
  277.294 (18h 29m 11s)  +9.729 ( +9d 43' 46")
  278.607 (18h 34m 26s)  +8.012 ( +8d 00' 43")
  278.333 (18h 33m 20s)  +8.303 ( +8d 18' 10")
 ---------------------------------------------
The error box area is 362 sq. arcmin, and its maximum
dimension is 2.5 deg (the minimum one is 3 arcmin).
The Sun distance was 62 deg.

A triangulation map and HEALPix FITS file are posted at
http://www.ioffe.ru/LEA/GRBs/GRB251105_T03511/IPN
The HEALPix triangulation map is the multi-order HEALPix in units of
probability density.

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