[vsnet-grb-info 19171] IPN Triangulation of GRB 170305A (short)

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  20824
SUBJECT: IPN Triangulation of GRB 170305A (short)
DATE:    17/03/06 18:57:17 GMT
FROM:    Dmitry Svinkin at Ioffe Institute  <svinkin 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,

D. Svinkin, S. Golenetskii, R. Aptekar, D. Frederiks, A. Kozlova,
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,

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

S. Barthelmy, J. Cummings, N. Gehrels, H. Krimm, and D. Palmer,
on behalf of the Swift-BAT team,

and

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

The short-duration GRB 170305A (Stanbro at al., GCN Circ. 20818)
has been detected by Fermi (GBM), Konus-Wind, INTEGRAL (SPI-ACS),
Mars-Odyssey (HEND), and Swift (BAT), so far,
at about 22147 s UT (06:09:07).
The burst was outside the coded field of view of the BAT.

We have triangulated it to a preliminary, 3 sigma error box whose
coordinates are:
---------------------------------------------
   RA(2000), deg                 Dec(2000), deg
  ---------------------------------------------
  Center:
    39.658 (02h 38m 38s)  +9.901 ( +9d 54' 05")
  Corners:
    39.371 (02h 37m 29s) +11.649 (+11d 38' 56")
    39.926 (02h 39m 42s)  +9.863 ( +9d 51' 47")
    39.796 (02h 39m 11s)  +8.512 ( +8d 30' 43")
    39.391 (02h 37m 34s)  +9.939 ( +9d 56' 21")
  ---------------------------------------------
The error box area is 2881 sq. arcmin, and its maximum
dimension is 3.16 deg (the minimum one is 29.0 arcmin).
The Sun distance was 55 deg.

This box may be improved.

A triangulation map is posted at
http://www.ioffe.ru/LEA/GRBs/GRB170305_T22143/IPN

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